Готові списки джерел за темами / Multimodal agents

Добірка наукової літератури з теми "Multimodal agents"

Автор: Grafiati

Опубліковано: 7 липня 2024

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Статті в журналах з теми "Multimodal agents":

PELACHAUD, CATHERINE, and ISABELLA POGGI. "Multimodal embodied agents." Knowledge Engineering Review 17, no. 2 (June 2002): 181–96. http://dx.doi.org/10.1017/s0269888902000218.

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1 Believable interactive embodied agentsAmong the goals of research on autonomous agents one important aim is to build believable interactive embodied agents that are apt to application to friendly interfaces in e-commerce, tourist and service query systems, entertainment (e.g. synthetic actors) and education (pedagogical agents, agents for help and instruction to the hearing impaired).

Frullano, Luca, and Thomas J. Meade. "Multimodal MRI contrast agents." JBIC Journal of Biological Inorganic Chemistry 12, no. 7 (July 21, 2007): 939–49. http://dx.doi.org/10.1007/s00775-007-0265-3.

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Relyea, Robert, Darshan Bhanushali, Abhishek Vashist, Amlan Ganguly, Andres Kwasinski, Michael E. Kuhl, and Raymond Ptucha. "Multimodal Localization for Autonomous Agents." Electronic Imaging 2019, no. 7 (January 13, 2019): 451–1. http://dx.doi.org/10.2352/issn.2470-1173.2019.7.iriacv-451.

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Zhang, Zongren, Kexian Liang, Sharon Bloch, Mikhail Berezin, and Samuel Achilefu. "Monomolecular Multimodal Fluorescence-Radioisotope Imaging Agents." Bioconjugate Chemistry 16, no. 5 (September 2005): 1232–39. http://dx.doi.org/10.1021/bc050136s.

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Taroni, Andrea. "Multimodal contrast agents combat cardiovascular disease." Materials Today 11, no. 11 (November 2008): 13. http://dx.doi.org/10.1016/s1369-7021(08)70232-3.

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Kopp, Stefan, and Ipke Wachsmuth. "Synthesizing multimodal utterances for conversational agents." Computer Animation and Virtual Worlds 15, no. 1 (March 2004): 39–52. http://dx.doi.org/10.1002/cav.6.

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Agarwal, Sanchit, Jan Jezabek, Arijit Biswas, Emre Barut, Bill Gao, and Tagyoung Chung. "Building Goal-Oriented Dialogue Systems with Situated Visual Context." Proceedings of the AAAI Conference on Artificial Intelligence 36, no. 11 (June 28, 2022): 13149–51. http://dx.doi.org/10.1609/aaai.v36i11.21710.

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Goal-oriented dialogue agents can comfortably utilize the conversational context and understand its users' goals. However, in visually driven user experiences, these conversational agents are also required to make sense of the screen context in order to provide a proper interactive experience. In this paper, we propose a novel multimodal conversational framework where the dialogue agent's next action and their arguments are derived jointly conditioned both on the conversational and the visual context. We demonstrate the proposed approach via a prototypical furniture shopping experience for a multimodal virtual assistant.

Perdigon-Lagunes, Pedro, Octavio Estevez, Cristina Zorrilla Cangas, and Raul Herrera-Becerra. "Gd – Gd2O3 multimodal nanoparticles as labeling agents." MRS Advances 3, no. 14 (2018): 761–66. http://dx.doi.org/10.1557/adv.2018.244.

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ABSTRACTLanthanide nanoparticles had the possibility to couple many imaging techniques into a sole labeling agent has awaken high expectations on personalized medicine or <<Theranostics>>. This is possible due to their intrinsic physic – chemical properties. Combining different imaging techniques physicians may provide a better treatment and perform surgical procedures that might increase the survival rate of patients. Hence, there is an enormous opportunity area for the development of lanthanide multimodal nanoparticles. For this study, we synthesized Gd – Gd2O3 nanoparticles at room temperature by reduction method assisted by Tannic acid, and later we doped them with different ratios of Eu. The nanoparticles were analyzed through high resolution microscopy (HRTEM), Raman Spectroscopy, luminescence, and magnetic characterizations. We found small nanoparticles with a mean size of 5 nm, covered in a carbonaceous layer. In addition, different emissions were detected depending on Eu concentration. Finally, the magnetization vs. temperature recorded under zero field cooled (ZFC) and field cooled (FC) conditions exhibit an antiferromagnetic to ferromagnetic phase transition in samples with Gd2O3, and hysteresis loops recorded at 100 Oe and 2 K showed a relevant magnetization without magnetic remanence. Hence, these nanomaterials have interesting properties to be tested in biocompatibility assays.

Burke, Benjamin P., Christopher Cawthorne, and Stephen J. Archibald. "Multimodal nanoparticle imaging agents: design and applications." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2107 (October 16, 2017): 20170261. http://dx.doi.org/10.1098/rsta.2017.0261.

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Molecular imaging, where the location of molecules or nanoscale constructs can be tracked in the body to report on disease or biochemical processes, is rapidly expanding to include combined modality or multimodal imaging. No single imaging technique can offer the optimum combination of properties (e.g. resolution, sensitivity, cost, availability). The rapid technological advances in hardware to scan patients, and software to process and fuse images, are pushing the boundaries of novel medical imaging approaches, and hand-in-hand with this is the requirement for advanced and specific multimodal imaging agents. These agents can be detected using a selection from radioisotope, magnetic resonance and optical imaging, among others. Nanoparticles offer great scope in this area as they lend themselves, via facile modification procedures, to act as multifunctional constructs. They have relevance as therapeutics and drug delivery agents that can be tracked by molecular imaging techniques with the particular development of applications in optically guided surgery and as radiosensitizers. There has been a huge amount of research work to produce nanoconstructs for imaging, and the parameters for successful clinical translation and validation of therapeutic applications are now becoming much better understood. It is an exciting time of progress for these agents as their potential is closer to being realized with translation into the clinic. The coming 5–10 years will be critical, as we will see if the predicted improvement in clinical outcomes becomes a reality. Some of the latest advances in combination modality agents are selected and the progression pathway to clinical trials analysed. This article is part of the themed issue ‘Challenges for chemistry in molecular imaging’.

Knez, Damijan, Izidor Sosič, Ana Mitrović, Anja Pišlar, Janko Kos, and Stanislav Gobec. "8-Hydroxyquinoline-based anti-Alzheimer multimodal agents." Monatshefte für Chemie - Chemical Monthly 151, no. 7 (July 2020): 1111–20. http://dx.doi.org/10.1007/s00706-020-02651-0.

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Дисертації з теми "Multimodal agents":

Bendal, Ove-Andre. "Integration of multimodal input by using agents." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9251.

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Today, user interfaces normally consist of a screen, and a pointing device and a keyboard for input. However, as more advanced technology and methods appears, there should be good chances to utilize these for more natural and effective human-computer interfaces. The main motivation is to get a more natural and easy to use interface, and the computer should understand the user without too much effort from the user. Intelligent interfaces could be a solution to achieve this goal. The main focus in this thesis, is multimodal input which combines different input modalities to achieve the user's goal. A framework has been designed where the user has the possibility to change between input modalities. The system should integrate the information given in different input modalities to one joint meaning. In this architecture, input could either be location or command input, and different modalities could be used for each input type. The example described later on in this thesis combines either speech or written text as command input, with either map input or physical position for location input. An agent-based blackboard architecture are used for collecting input. Agents collect information directly from the user. Each agent represent their own input modality, and is responsible to analyse input. As this is done, the agent send the information to a common blackboard which hold the latest information from each agent. An own agent which is responsible for fusing this information to one common meaning, collects the information from the blackboard and integrate it to one joint meaning. This joint interpretation decides what should be done to which object. Since the modalities are independent of each other, other modalities could easily be added with just small changes to other parts of the system as long as it is an command or location input which agrees to the currently representation structure.

Mancini, Maurizio. "Multimodal distinctive behavior for expressive embodied conversational agents." Paris 8, 2008. https://octaviana.fr/items/show/9956#?c=0&m=0&s=0&cv=0.

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Les agents conversationnels sont un nouveau type d'interface de communication qui ont un aspect humain et des capacités communicatives. Les utilisateurs, qui interagissent avec ces agents, pourraient être plus engagés et participatifs si les agents montrent un comportement cohérent dans différentes situations conversationnelles et suivant leurs états émotionnels. En particulier les agents doivent maintenir une tendance générale comportementale au cours de toute conversation. Notre but est d'augmenter la crédibilité des agents en adressant deux aspects de la communication de l'agent: - un agent doit être capable de montrer ses intentions communicatives non seulement avec son choix des expressions faciales, gestes, etc. , mais aussi en modifiant la qualité de ses mouvements (e. G. , leur vitesse, amplitude, etc. ) et le choix des modalités qui sont utilisées durant la communication; - le comportement caractéristique de l'agent (i. E. Sa "tendance" du choix des modalités et sa qualité globale d'expressivité) doit transparaître durant toute communication. Nous avons développer un modèle qui intègre ces deux propriétés. Nous évaluons la capacité de l'agent à maintenir une tendance comportementale globale à travers des tests perceptifs et des scénarios applicatifs. Le système résultant est fortement extensible et configurable. Il peut être aussi utilisé comme instrument de recherche sur la communication humaine
Embodied Conversational Agents are a new type of computer interfaces which have human-like bodies and conversational skills. Users interacting with agents will be more engaged and participative if the agents exhibit behaviors which look coherent across different situations and emotional states. In the present work, we aim at increasing agents believability by looking at two main aspects of the problem : - an agent must be able to show its emotional state and communicative intentions not only through specific facial expressions, gestures, etc. , but also by varying the quality of its movements (e. G. , their speed, amplitude, etc. ) and the choice of the modalities that are used to communicate ; - the agent must maintain a disctinctive behavior tendency has to remain apparent during any communication ; We have developed a model to solve the two above issues. We have evaluated the realism and believability of the resulting agent's behaviors through perceptual tests and application scenario. The resulting system is highly extensible and configurable. It can also be used as a research tool to study human communication

Gaciarz, Matthis. "Régulation de trafic urbain multimodal : une modélisation multi-agents." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1281/document.

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Depuis plusieurs décennies, la congestion urbaine est de plus en plus répandue et dégrade la qualité de vie des habitants des villes. Plusieurs méthodes sont utilisées pour diminuer la congestion urbaine, notamment la régulation du trafic et la valorisation des transports en commun. Depuis les années 1990 l'utilisation d‘outils issus de l'intelligence artificielle, et en particulier des méthodes distribuées et les systèmes multi-agents, a permis de concevoir de nouvelles méthodes de régulation du trafic. Parallèlement, l'amélioration des capacités de communication des véhicules et des conducteurs et l'arrivée de voitures autonomes permettent d'envisager de nouvelles approches en matière de régulation. Le travail de recherche proposé dans le cadre de cette thèse est structuré en deux volets. Nous proposons d'abord une méthode de régulation du trafic à une intersection s'appuyant sur la négociation automatique. Notre méthode se fonde sur un système d'argumentation décrivant l'état du trafic et les préférences de chacun, appuyé par des méthodes de raisonnement pour les véhicules et les infrastructures. Dans le deuxième volet de cette thèse, nous proposons une méthode de coordination des bus avec le reste du trafic. Celle-ci permet à un bus de se coordonner de manière anticipative avec les prochaines intersections qu'il prévoit de traverser, afin de mettre en place une politique commune de régulation qui permet au bus d'atteindre son prochain arrêt en subissant le minimum de congestions potentielles
Since several decades, urban congestion is more and more widespread and deteriorate the quality of life of citizens who live in cities. Several methods are used to reduce urban congestion, notably traffic regulation and promotion of public transportation. Since the 1990's, the usage of tools from artificial intelligence, particularly distributed systems and multi-agent systems, allowed to design new methods for traffic regulation. Indeed, these methods ease to take into account the complexity of traffic-related problems with distribution. Moreover, the improvement of the communication abilities of the vehicles and the coming of autonomous vehicles allow to consider new approaches for regulation.The research work presented in this work is twofold. First we propose a method for traffic regulation at an intersection based on automatic negotiation. Our method is based on an argumentation system describing the state of the traffic and the preferences of each vehicle, relying on reasonning methods for vehicles and infrastructures. In the second part of this thesis, we propose a coordination method for buses for the rest of the traffic. This method allows a bus to coordinate in an anticipatory way with the next intersections on its trajectory, in order to define a common regulation policy allowing the bus to reach its next stop without suffering from potential congestions

Kothapalli, Satya V. V. N. "Nano-Engineered Contrast Agents : Toward Multimodal Imaging and Acoustophoresis." Doctoral thesis, KTH, Medicinsk bildteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172397.

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Diagnostic ultrasound (US) is safer, quicker and cheaper than other diagnostic imaging modalities. Over the past two decades, the applications of US imaging has been widened due to the development of injectable, compressible and encapsulated microbubbles (MBs) that provide an opportunity to improve conventional echocardiographic imaging, blood flow assessment and molecular imaging. The encapsulating material is manufactured by different biocompatible materials such as proteins, lipids or polymers. In current research, researchers modify the encapsulated shell with the help of advanced molecular chemistry techniques to load them with dyes (for fluorescent imaging), nanoparticles and radioisotopes (for multimodal imaging) or functional ligands or therapeutic gases (for local drug delivery). The echogenicity and the radial oscillation of MBs is the result of their compressibility, which undoubtedly varies with the encapsulated shell characteristics such as rigidity or elasticity. In this thesis, we present acoustic properties of novel type of polyvinyl alcohol (PVA)-shelled microbubble (PVA-MB) that was further modified with superparamagnetic iron oxide nanoparticles (SPIONs) to work as a dual-modal contrast agent for magnetic resonance (MR) imaging along with US imaging. Apparently, the shell modification changes their mechanical characteristics, which affects their acoustic properties. The overall objective of the thesis is to investigate the acoustic properties of modified and unmodified PVA-MBs at different ultrasound parameters. The acoustic and mechanical characterization of SPIONs modified PVA-MBs revealed that the acoustical response depends on the SPION inclusion strategy. However they retain the same structural characteristics after the modification. The modified MBs with SPIONs included on the surface of the PVA shell exhibit a soft-shelled behavior and produce a higher echogenicity than the MBs with the SPIONs inside the PVA shell. The fracturing mechanism of the unmodified PVA-MBs was identified to be different from the other fracturing mechanisms of conventional MBs. With the interaction of high-pressure bursts, the air gas core is squeezed out through small punctures in the PVA shell. During the fracturing, the PVA-MBs exhibit asymmetric (other modes) oscillations, resulting in sub- and ultra-harmonic generation. Exploiting the US imaging at the other modes of the oscillation of the PVA-MBs would provide an opportunity to visualize very low concentrations of (down to single) PVA-MBs. We further introduced the PVA-MBs along with particles mimicking red blood cells in an acoustic standing-wave field to observe the acoustic radiation force effect. We observed that the compressible PVA-MBs drawn toward pressure antinode while the solid blood phantoms moved toward the pressure node. This acoustic separation method (acoustophoresis) could be an efficient tool for studying the bioclearance of the PVA-MBs in the body, either by collecting blood samples (in-vitro) or by using the extracorporeal medical procedure (ex-vivo) at different organs. Overall, this work contributes significant feedback for chemists (to optimize the nanoparticle inclusion) and imaging groups (to develop new imaging sequences), and the positive findings pave new paths and provide triggers to engage in further research.

QC 20150827

3MiCRON

Sathiyajith, Cuhananthan Wijayanayagam. "Investigations towards new multidentate ligands as potential multimodal imaging agents." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/55044/.

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A Coordination chemistry based historical perspective of contrast agents which are utilised in various imaging modalities, forms the basis of Chapter 1. Chapter 1 also highlights the various latest advancements and the challenges confronted therein. Chapter 1 culminates in highlighting the need for dual purpose contrast agents. Chapter 2 and Chapter 3 deals with rx)lyarnino poly carboxylate derivatives based on EDTA and DTPA respectively. Chapter 2 sheds light upon Teslascan and other related manganese based potential contrast agents. It also highlights the emergence of Mn (II) as the direct competitor for Gd (HI) in the face of Nephrogenic Systemic Fibrosis (NSF) reported for Gd based contrast agents. The chapter culminates in describing the synthesis of a library of EDTA bisamides, including four new EDTA bisamides. Chapter 3 in turn takes a detailed look at a series of DTPA analogues and DTPA bisamides synthesized by scientists all over the world. It also highlights the various synthetic methodologies undertaken by the able scientists. The chapter culminates in describing four new multidentate ligands synthesized in this project, namely two new DTPA analogues and two new DTPA Bisamides. It has been shown that the synthetic methodology utilised to synthesize symmetric naphtha derivative L5 is fairly unique. Chapter 4 and Chapter 5 report the investigations carried out on these new multidentate ligands in terms of relaxometry, potentiometry and luminescence. Interesting results were obtained from relaxometric and luminescence measurements. For instance, symmetric naphtha derivative, reported a relaxivity of 8.8 mM'V1, relaxivity obtained for Mn (II) complex of EDTA bisamide of 4-aniinomethylpyridine is also highly commendable. Investigations on the optical properties of the multidentate ligands require a separate chapter. Thus it is has been allotted Chapter 5. DTPA bisamide of N, N-Bis (tert- butoxycarrx)nyl)memyl-2-bromcmylamine was found to quench the fluorescence upon binding with Cu (II), indicating its application as luminescent sensor for Cu (II).

Fragueiro, Oihane. "Developing nanoparticles as contrast agents for cell labelling and multimodal bioimaging." Thesis, University of Liverpool, 2018. http://livrepository.liverpool.ac.uk/3028423/.

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Emergence of new bioimaging technologies requires the development of the most appropriate contrast agents for each application. In this thesis, we present the development of gold nanorods (GNRs) and chromium doped zinc gallium oxide (ZGO:Cr) for labelling mesenchymal stem cells (MSCs), which enabled multimodal in vivo monitoring of cells. GNRs are excellent contrast agents for Multispectral Optoacoustic Tomography (MSOT) due to the high absorbance of their longitudinal surface plasmon resonance (LSPR) in the Near Infrared (NIR) region of the electromagnetic spectrum. Persistent luminescent nanoparticles such as ZGO:Cr have arisen as promising optical in vivo probes due to their long emission lifetime, in the order of minutes. First, NPs were synthesised and their surface was modified to improve colloidal stability, biocompatibility and cell uptake. GNRs were prepared by the seed-mediated growth method, and modified via ligand exchange using a small thiolated PEG with a carboxylic acid terminal group. For ZGO:Cr a hydrothermal approach was followed and surface was modified with DMSA. Interactions with cells and how these interactions affect the optical properties of the nanoprobes have been also studied here. To follow a multimodal imaging approach, MSC cells were co-incubated with PEG-COOH-GNRs and DMSA-ZGO. Imaging by means of MSOT and optical imaging was conducted after subcutaneous injection, and also after intracardiac administration of labelled cells. The combination of different imaging modalities is frequently required to overcome limitations of a particular technique. In our case, MSOT offered great resolution deep into the body, enabling sub-organ localisation of labelled cells, which is not possible with pure optical-based techniques. However, organs such as lungs and stomach cannot be visualised and endogenous absorbers with similar optical spectrum than GNRs could lead to false positives. On the other side, persistent luminescence did not present those limitations, however its spatial resolution is much worse than MSOT. Therefore, the two imaging modalities complemented each other to have a more accurate view of the process.

Stocky, Thomas A. (Thomas August) 1978. "Conveying routes : multimodal generation and spatial intelligence in embodied conversational agents." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87833.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
Includes bibliographical references (leaves 38-40).
by Thomas A. Stocky.
M.Eng.

Kilic, Nüzhet Inci. "Graphene Quantum Dots as Fluorescent and Passivation Agents for Multimodal Bioimaging." Thesis, KTH, Tillämpad fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298302.

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Zero-dimensional graphene (carbon) quantum dots have been drawing attention in bio-related applications since their discovery, especially for their optical properties, chemical stability, and easily modifiable surface. This thesis focuses on the green synthesis of nitrogen-doped graphene quantum dots (GQDs) for dual-mode bioimaging with X-ray fluorescence (XRF) and optical fluorescence. Both conventional and microwave- (MW-)assisted solvothermal methods were followed to investigate the precursors’ effect on the synthesized GQDs. The MW-assisted method permitted the synthesis of uniform GQDs with an excitation-independent behavior, due to highly controllable reaction conditions. It was demonstrated that the molecular structure of the precursors influenced the optical fluorescence properties of the GQDs. Thus, both blue- (BQDs) and red-emitting (RQDs) GQDs were obtained by selecting specific precursors, leading to emission maxima at 438 and 605 nm under the excitation wavelengths of 390 and 585 nm, respectively. Amine-functionalized Rh nanoparticles (NPs) were chosen as the X-ray fluorescence (XRF) active core, synthesized via MW-assisted hydrothermal method with a custom designed sugar ligand as the reducing agent. These NPs were conjugated with BQDs using EDC-NHS treatment. The hybrid Rh-GQDs NPs exhibited green emission (520 nm) under 490 nm excitation and led to a reduced cytotoxicity with respect to bare Rh NPs, highlighting the passivation role of the GQDs via the real-time cell analysis (RTCA) assay. The hybrid complex constituted a multimodal bioimaging contrastagent, tested with confocal microscopy (in vitro) and XRF phantom experiments.
Sedan deras upptäckt har nolldimensionella kvantprickar av grafen (kol) uppmärksammats inom biorelaterade applikationer, särskilt för deras optiska egenskaper, kemiska stabilitet och enkelt modifierbara yta. Denna avhandling fokuserar på en grön syntesmetod av kvävedopade grafen-kvantprickar för bimodal bioavbildning med röntgenfluorescens och optisk fluorescens. Både konventionella och mikrovågs-assisterade solvotermiska syntesmetoder användes för att undersöka metodernas effekt på de syntetiserade kvantprickarna. Den mikrovågs-assisterade metoden möjliggjorde syntes av uniforma kvantprickar med exciteringsoberoende egenskaper på grund av mycket kontrollerbara reaktionsförhållanden. Det demonstrerades att den molekylära strukturen hos prekursorerna påverkade de optiska fluorescensegenskaperna hos grafen-kvantprickarna. Genom att välja specifika prekursorer erhölls kvantprickar som emitterar i både blått och rött ljus, motsvarande emissionsmaxima vid 438 respektive 605 nm under excitering vid 390 respektive 585 nm. Amin-funktionaliserade Rh-nanopartiklar valdes som en aktiv kärna för röntgenfluorescens, syntetiserad genom en mikrovågs-assisterad hydrotermisk metod med en specialdesignad sockerligand som reduktionsmedel. Dessa nanopartiklar konjugerades med blåemitterande kvantprickar genom EDC-NHS-behandling. De hybrida nanopartiklarna uppvisade grön emission (520 nm) under 490 nm excitation och ledde till en minskad cytotoxicitet uppmätt genom cellanalys i realtid (RTCA) jämfört med endast Rh-nanopartiklar, vilket framhävde passiveringsrollen som kvantprickarna spelar. Hybridkomplexet utgjorde ett multimodalt kontrastmedel för bioavbildning, vilket demonstrerades med konfokalmikroskopi (in vitro) och fantomexperiment med röntgenfluorescens.

Fayech, Besma. "Régulation des réseaux de transport multimodal : systèmes multi-agents et algorithmes évolutionnistes." Lille 1, 2003. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2003/50376-2003-323.pdf.

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Le but des travaux présentés dans cette thèse est de proposer un système d'aide à la décision pour la régulation du trafic au sein d'un réseau de transport collectif multimodal. Nous définissons la régulation comme la réaffectation, à travers différentes décisions, des horaires et des itinéraires aux différents véhicules du réseau en cas de perturbation. Afin de mieux représenter les aspects statiques et dynamiques du réseau, nous proposons une modélisation hybride du système de transport (agents et graphes). Le Système Multi-Agent d'Aide à la Décision (SMAAD) proposé réalise les deux phases principales du processus de régulation: le diagnostic des incidents et la prise de décision. Le SMAAD inclut des agents ZONEREG qui génèrent des décisions via une approche évolutionniste de régulation qui peut mener à une reconfiguration partielle du réseau. Cette approche tient compte de la flexibilité courante. Elle intègre ainsi un algorithme de recherche de chemins hamiltoniens.

Mihoub, Alaeddine. "Apprentissage statistique de modèles de comportement multimodal pour les agents conversationnels interactifs." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT079/document.

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L'interaction face-à-face représente une des formes les plus fondamentales de la communication humaine. C'est un système dynamique multimodal et couplé – impliquant non seulement la parole mais de nombreux segments du corps dont le regard, l'orientation de la tête, du buste et du corps, les gestes faciaux et brachio-manuels, etc – d'une grande complexité. La compréhension et la modélisation de ce type de communication est une étape cruciale dans le processus de la conception des agents interactifs capables d'engager des conversations crédibles avec des partenaires humains. Concrètement, un modèle de comportement multimodal destiné aux agents sociaux interactifs fait face à la tâche complexe de générer un comportement multimodal étant donné une analyse de la scène et une estimation incrémentale des objectifs conjoints visés au cours de la conversation. L'objectif de cette thèse est de développer des modèles de comportement multimodal pour permettre aux agents artificiels de mener une communication co-verbale pertinente avec un partenaire humain. Alors que l'immense majorité des travaux dans le domaine de l'interaction humain-agent repose essentiellement sur des modèles à base de règles, notre approche se base sur la modélisation statistique des interactions sociales à partir de traces collectées lors d'interactions exemplaires, démontrées par des tuteurs humains. Dans ce cadre, nous introduisons des modèles de comportement dits "sensori-moteurs", qui permettent à la fois la reconnaissance des états cognitifs conjoints et la génération des signaux sociaux d'une manière incrémentale. En particulier, les modèles de comportement proposés ont pour objectif d'estimer l'unité d'interaction (IU) dans laquelle sont engagés de manière conjointe les interlocuteurs et de générer le comportement co-verbal du tuteur humain étant donné le comportement observé de son/ses interlocuteur(s). Les modèles proposés sont principalement des modèles probabilistes graphiques qui se basent sur les chaînes de markov cachés (HMM) et les réseaux bayésiens dynamiques (DBN). Les modèles ont été appris et évalués – notamment comparés à des classifieurs classiques – sur des jeux de données collectés lors de deux différentes interactions face-à-face. Les deux interactions ont été soigneusement conçues de manière à collecter, en un minimum de temps, un nombre suffisant d'exemplaires de gestion de l'attention mutuelle et de deixis multimodale d'objets et de lieux. Nos contributions sont complétées par des méthodes originales d'interprétation et d'évaluation des propriétés des modèles proposés. En comparant tous les modèles avec les vraies traces d'interactions, les résultats montrent que le modèle HMM, grâce à ses propriétés de modélisation séquentielle, dépasse les simples classifieurs en terme de performances. Les modèles semi-markoviens (HSMM) ont été également testé et ont abouti à un meilleur bouclage sensori-moteur grâce à leurs propriétés de modélisation des durées des états. Enfin, grâce à une structure de dépendances riche apprise à partir des données, le modèle DBN a les performances les plus probantes et démontre en outre la coordination multimodale la plus fidèle aux évènements multimodaux originaux
Face to face interaction is one of the most fundamental forms of human communication. It is a complex multimodal and coupled dynamic system involving not only speech but of numerous segments of the body among which gaze, the orientation of the head, the chest and the body, the facial and brachiomanual movements, etc. The understanding and the modeling of this type of communication is a crucial stage for designing interactive agents capable of committing (hiring) credible conversations with human partners. Concretely, a model of multimodal behavior for interactive social agents faces with the complex task of generating gestural scores given an analysis of the scene and an incremental estimation of the joint objectives aimed during the conversation. The objective of this thesis is to develop models of multimodal behavior that allow artificial agents to engage into a relevant co-verbal communication with a human partner. While the immense majority of the works in the field of human-agent interaction (HAI) is scripted using ruled-based models, our approach relies on the training of statistical models from tracks collected during exemplary interactions, demonstrated by human trainers. In this context, we introduce "sensorimotor" models of behavior, which perform at the same time the recognition of joint cognitive states and the generation of the social signals in an incremental way. In particular, the proposed models of behavior have to estimate the current unit of interaction ( IU) in which the interlocutors are jointly committed and to predict the co-verbal behavior of its human trainer given the behavior of the interlocutor(s). The proposed models are all graphical models, i.e. Hidden Markov Models (HMM) and Dynamic Bayesian Networks (DBN). The models were trained and evaluated - in particular compared with classic classifiers - using datasets collected during two different interactions. Both interactions were carefully designed so as to collect, in a minimum amount of time, a sufficient number of exemplars of mutual attention and multimodal deixis of objects and places. Our contributions are completed by original methods for the interpretation and comparative evaluation of the properties of the proposed models. By comparing the output of the models with the original scores, we show that the HMM, thanks to its properties of sequential modeling, outperforms the simple classifiers in term of performances. The semi-Markovian models (HSMM) further improves the estimation of sensorimotor states thanks to duration modeling. Finally, thanks to a rich structure of dependency between variables learnt from the data, the DBN has the most convincing performances and demonstrates both the best performance and the most faithful multimodal coordination to the original multimodal events

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Книги з теми "Multimodal agents":

Miehle, Juliana, Wolfgang Minker, Elisabeth André, and Koichiro Yoshino, eds. Multimodal Agents for Ageing and Multicultural Societies. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3476-5.

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Böck, Ronald, Francesca Bonin, Nick Campbell, and Ronald Poppe, eds. Multimodal Analyses enabling Artificial Agents in Human-Machine Interaction. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15557-9.

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Emerson, Donald J., Doris Lee, Crystal M. Cummings, Jennifer Thompson, Bridget M. Wieghart, and Shelly Brown. Navigating Multi-Agency NEPA Processes to Advance Multimodal Transportation Projects. Washington, D.C.: Transportation Research Board, 2016. http://dx.doi.org/10.17226/23581.

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Müller-Jentsch, Daniel. Transport policies for the Euro-Mediterranean free-trade area: An agenda for multimodal transport reform in the southern Mediterranean. Washington, D.C: World Bank, 2002.

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IVA 2010 (2010 Philadelphia, Pa.). Intelligent virtual agents: 10th international conference, IVA 2010, Philadelphia, PA, USA, September 20-22, 2010 : proceedings. Berlin: Springer, 2010.

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Multimodal Concepts for Integration of Cytotoxic Drugs (Medical Radiology). Springer, 2006.

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Böck, Ronald, Francesca Bonin, Nick Campbell, and Ronald Poppe. Multimodal Analyses enabling Artificial Agents in Human-Machine Interaction. Springer, 2015.

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Mehta, M. P., L. W. Brady, J. M. Brown, C. Nieder, and H. P. Heilmann. Multimodal Concepts for Integration of Cytotoxic Drugs. Springer Berlin / Heidelberg, 2010.

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André, Elisabeth, Wolfgang Minker, Juliana Miehle, and Koichiro Yoshino. Multimodal Agents for Ageing and Multicultural Societies: Communications of NII Shonan Meetings. Springer, 2022.

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André, Elisabeth, Wolfgang Minker, Juliana Miehle, and Koichiro Yoshino. Multimodal Agents for Ageing and Multicultural Societies: Communications of NII Shonan Meetings. Springer Singapore Pte. Limited, 2021.

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Частини книг з теми "Multimodal agents":

Kipp, Michael, Alexis Heloir, Marc Schröder, and Patrick Gebhard. "Realizing Multimodal Behavior." In Intelligent Virtual Agents, 57–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15892-6_7.

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Rehm, Matthias. "Multimodal Training Between Agents." In Intelligent Virtual Agents, 348–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-39396-2_57.

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Niewiadomski, Radosław, and Catherine Pelachaud. "Towards Multimodal Expression of Laughter." In Intelligent Virtual Agents, 231–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33197-8_24.

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Ding, Yu, Catherine Pelachaud, and Thierry Artières. "Modeling Multimodal Behaviors from Speech Prosody." In Intelligent Virtual Agents, 217–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40415-3_19.

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Bevacqua, Elisabetta, Sathish Pammi, Sylwia Julia Hyniewska, Marc Schröder, and Catherine Pelachaud. "Multimodal Backchannels for Embodied Conversational Agents." In Intelligent Virtual Agents, 194–200. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15892-6_21.

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Sharma, Parvesh, Amit Singh, Scott C. Brown, Niclas Bengtsson, Glenn A. Walter, Stephen R. Grobmyer, Nobutaka Iwakuma, Swadeshmukul Santra, Edward W. Scott, and Brij M. Moudgil. "Multimodal Nanoparticulate Bioimaging Contrast Agents." In Methods in Molecular Biology, 67–81. Totowa, NJ: Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60761-609-2_5.

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Reidsma, Dennis, Herwin van Welbergen, and Job Zwiers. "Multimodal Plan Representation for Adaptable BML Scheduling." In Intelligent Virtual Agents, 296–308. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23974-8_32.

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Riviere, Jeremy, Carole Adam, Sylvie Pesty, Catherine Pelachaud, Nadine Guiraud, Dominique Longin, and Emiliano Lorini. "Expressive Multimodal Conversational Acts for SAIBA Agents." In Intelligent Virtual Agents, 316–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23974-8_34.

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Morency, Louis-Philippe, Iwan de Kok, and Jonathan Gratch. "Predicting Listener Backchannels: A Probabilistic Multimodal Approach." In Intelligent Virtual Agents, 176–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-85483-8_18.

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Thórisson, Kristinn R., Olafur Gislason, Gudny Ragna Jonsdottir, and Hrafn Th Thorisson. "A Multiparty Multimodal Architecture for Realtime Turntaking." In Intelligent Virtual Agents, 350–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15892-6_37.

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Тези доповідей конференцій з теми "Multimodal agents":

Teraphongphom, Nutte Tarn, Margaret A. Wheatley, Peter Chhour, and David P. Cormode. "Multimodal Polymeric Contrast Agents." In 2013 39th Annual Northeast Bioengineering Conference (NEBEC). IEEE, 2013. http://dx.doi.org/10.1109/nebec.2013.114.

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Pelachaud, Catherine. "Multimodal expressive embodied conversational agents." In the 13th annual ACM international conference. New York, New York, USA: ACM Press, 2005. http://dx.doi.org/10.1145/1101149.1101301.

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Pelachaud, Catherine, and Isabella Poggi. "Multimodal communication between synthetic agents." In the working conference. New York, New York, USA: ACM Press, 1998. http://dx.doi.org/10.1145/948496.948518.

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Chaminade, Thierry. "How do artificial agents think?" In ICMI '17: INTERNATIONAL CONFERENCE ON MULTIMODAL INTERACTION. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3139491.3139511.

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Yalçin, Özge Nilay. "Modeling Empathy in Embodied Conversational Agents." In ICMI '18: INTERNATIONAL CONFERENCE ON MULTIMODAL INTERACTION. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3242969.3264977.

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Tanaka, Hiroki, Hideki Negoro, Hidemi Iwasaka, and Satoshi Nakamura. "Listening Skills Assessment through Computer Agents." In ICMI '18: INTERNATIONAL CONFERENCE ON MULTIMODAL INTERACTION. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3242969.3242970.

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Lofaro, Daniel, and Donald Sofge. "Multimodal Control of Lighter-Than-Air Agents." In ICMI '18: INTERNATIONAL CONFERENCE ON MULTIMODAL INTERACTION. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3242969.3266296.

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Barange, Mukesh, Sandratra Rasendrasoa, Maël Bouabdelli, Julien Saunier, and Alexandre Pauchet. "Multimodal adaptive empathic agent architecture." In IVA '22: ACM International Conference on Intelligent Virtual Agents. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3514197.3551251.

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Blomsma, Pieter A., Guido M. Linders, Julija Vaitonyte, and Max M. Louwerse. "Intrapersonal dependencies in multimodal behavior." In IVA '20: ACM International Conference on Intelligent Virtual Agents. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3383652.3423872.

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Kiderle, Thomas, Hannes Ritschel, Silvan Mertes, and Elisabeth André. "Multimodal Irony for Virtual Characters." In IVA '23: ACM International Conference on Intelligent Virtual Agents. New York, NY, USA: ACM, 2023. http://dx.doi.org/10.1145/3570945.3607299.

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Звіти організацій з теми "Multimodal agents":

Sofge, Donald, Magdalena Bugajska, William Adams, Dennis Perzanowski, and Alan Schultz. Agent-based Multimodal Interface for Dynamically Autonomous Mobile Robots. Fort Belvoir, VA: Defense Technical Information Center, January 2003. http://dx.doi.org/10.21236/ada434975.

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David, Allan E. Microenvironment-Sensitive Multimodal Contrast Agent for Prostate Cancer Diagnosis. Fort Belvoir, VA: Defense Technical Information Center, October 2014. http://dx.doi.org/10.21236/ada610926.

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Acosta Urribarra, Adis, Ivys Beitia Alvear, Marta Beatriz Caballero, Zinaida Guevara Atencio, Tayra Guillén Reina, Milvia Marín Pérez, Quil Mireya Parra de Mata, et al. Aprendamos Todos a Leer: guía del profesor: grado tercero 3: 2da edición. Inter-American Development Bank, April 2023. http://dx.doi.org/10.18235/0004826.

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Material para promover el aprendizaje a través de la lectura y la escritura, por ello cada unidad además de profundizar en ciertas tipologías textuales esboza un trabajo en las áreas del conocimiento: ciencias naturales, matemáticas, geografía y sociales. También, se aplican algunas estrategias de diferenciación como las Agendas y se pone un acento especial en el proceso de escritura, pues en cada unidad el docente acompaña, modela, realimenta y abre espacios de planeación, textualización y revisión de diferentes tipos de textos. Los libros contienen códigos QR que expanden el universo de posibilidades de lectura y contacto con la cultura escrita universal y permite acceder a formatos discontinuos y multimodales.

Acosta Urribarra, Adis, Ivys Beitia Alvear, Marta Beatriz Caballero, Zinaida Guevara Atencio, Tayra Guillén Reina, Milvia Marín Pérez, Quil Mireya Parra de Mata, et al. Aprendamos Todos a Leer: guía del alumno: grado tercero 3: 2da edición. Banco Interamericano de Desarrollo, April 2023. http://dx.doi.org/10.18235/0004849.

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Lumpkin, Shamsie, Isaac Parrish, Austin Terrell, and Dwayne Accardo. Pain Control: Opioid vs. Nonopioid Analgesia During the Immediate Postoperative Period. University of Tennessee Health Science Center, July 2021. http://dx.doi.org/10.21007/con.dnp.2021.0008.

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Background Opioid analgesia has become the mainstay for acute pain management in the postoperative setting. However, the use of opioid medications comes with significant risks and side effects. Due to increasing numbers of prescriptions to those with chronic pain, opioid medications have become more expensive while becoming less effective due to the buildup of patient tolerance. The idea of opioid-free analgesic techniques has rarely been breached in many hospitals. Emerging research has shown that opioid-sparing approaches have resulted in lower reported pain scores across the board, as well as significant cost reductions to hospitals and insurance agencies. In addition to providing adequate pain relief, the predicted cost burden of an opioid-free or opioid-sparing approach is significantly less than traditional methods. Methods The following groups were considered in our inclusion criteria: those who speak the English language, all races and ethnicities, male or female, home medications, those who are at least 18 years of age and able to provide written informed consent, those undergoing inpatient or same-day surgical procedures. In addition, our scoping review includes the following exclusion criteria: those who are non-English speaking, those who are less than 18 years of age, those who are not undergoing surgical procedures while admitted, those who are unable to provide numeric pain score due to clinical status, those who are unable to provide written informed consent, and those who decline participation in the study. Data was extracted by one reviewer and verified by the remaining two group members. Extraction was divided as equally as possible among the 11 listed references. Discrepancies in data extraction were discussed between the article reviewer, project editor, and group leader. Results We identified nine primary sources addressing the use of ketamine as an alternative to opioid analgesia and post-operative pain control. Our findings indicate a positive correlation between perioperative ketamine administration and postoperative pain control. While this information provides insight on opioid-free analgesia, it also revealed the limited amount of research conducted in this area of practice. The strategies for several of the clinical trials limited ketamine administration to a small niche of patients. The included studies provided evidence for lower pain scores, reductions in opioid consumption, and better patient outcomes. Implications for Nursing Practice Based on the results of the studies’ randomized controlled trials and meta-analyses, the effects of ketamine are shown as an adequate analgesic alternative to opioids postoperatively. The cited resources showed that ketamine can be used as a sole agent, or combined effectively with reduced doses of opioids for multimodal therapy. There were noted limitations in some of the research articles. Not all of the cited studies were able to include definitive evidence of proper blinding techniques or randomization methods. Small sample sizes and the inclusion of specific patient populations identified within several of the studies can skew data in one direction or another; therefore, significant clinical results cannot be generalized to patient populations across the board.

El papel de los puertos en la transición energética. Universidad de Deusto, 2022. http://dx.doi.org/10.18543/rvso1446.

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Los puertos actúan como punto de intersección entre la tierra y el mar, garantizan la continuidad territorial, dan servicio al tráfico marítimo regional y local y unen áreas periféricas e insulares. Son nodos desde los que se pueden organizar los flujos logísticos multimodales, utilizando enlaces de transporte marítimo de corta distancia (short sea shipping, SSS), ferrocarriles y vías navegables interiores para minimizar la congestión de las carreteras y el consumo de energía. Debido a su emplazamiento los puertos pueden desempeñar un rol fundamental en la agenda de descarbonización de los países y, en particular, de las cadenas logísticas internacionales y facilitar el crecimiento económico entre regiones y países. Este documento tiene como objetivo evaluar el papel de los puertos en la transición energética, desde una doble perspectiva, el puerto como impulsor de la actividad portuaria y como eslabón de los clústeres marítimo-portuarios. Para ello, tras revisar las principales tendencias actuales del sector, se analizan algunas de las principales directrices a las que se acogen tanto los puertos como los medios de transporte que estos conectan. Se presentan los puertos como actores que han evolucionado desde tener una preocupación medioambiental hasta convertirse en puertos resilientes. Se desarrolla un modelo de análisis sobre la base de parámetros para comparar el avance en la transición energética de los puertos y se aplica al caso del puerto de Bilbao, Valencia, Rotterdam y Los Ángeles. El documento termina con un apartado de conclusiones.