Relevant bibliographies by topics / Bilinear programs

Academic literature on the topic 'Bilinear programs'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Bilinear programs"

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Hansen, Pierre, and Brigitte Jaumard. "Reduction of indefinite quadratic programs to bilinear programs." Journal of Global Optimization 2, no. 1 (1992): 41–60. http://dx.doi.org/10.1007/bf00121301.

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Petrik, M., and S. Zilberstein. "A Bilinear Programming Approach for Multiagent Planning." Journal of Artificial Intelligence Research 35 (June 24, 2009): 235–74. http://dx.doi.org/10.1613/jair.2673.

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Multiagent planning and coordination problems are common and known to be computationally hard. We show that a wide range of two-agent problems can be formulated as bilinear programs. We present a successive approximation algorithm that significantly outperforms the coverage set algorithm, which is the state-of-the-art method for this class of multiagent problems. Because the algorithm is formulated for bilinear programs, it is more general and simpler to implement. The new algorithm can be terminated at any time and-unlike the coverage set algorithm-it facilitates the derivation of a useful online performance bound. It is also much more efficient, on average reducing the computation time of the optimal solution by about four orders of magnitude. Finally, we introduce an automatic dimensionality reduction method that improves the effectiveness of the algorithm, extending its applicability to new domains and providing a new way to analyze a subclass of bilinear programs.
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Ma, Chao, Haiying Gao, and Duo Wei. "A CP-ABE Scheme Supporting Arithmetic Span Programs." Security and Communication Networks 2020 (March 16, 2020): 1–16. http://dx.doi.org/10.1155/2020/3265871.

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Attribute-based encryption achieves fine-grained access control, especially in a cloud computing environment. In a ciphertext-policy attribute-based encryption (CP-ABE) scheme, the ciphertexts are associated with the access policies, while the secret keys are determined by the attributes. In recent years, people have tried to find more effective access structures to improve the efficiency of encryption systems. This paper presents a ciphertext-policy attribute-based encryption scheme that supports arithmetic span programs. On the composite-order bilinear group, the security of the scheme is proven by experimental sequence based on the combination of composite-order bilinear entropy expansion lemma and subgroup decision (SD) assumption. And, it is an adaptively secure scheme with constant-size public parameters.
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Kang, Ji-Hoon, Ki-Hyung Hong, Kyu-Young Whang, and Jung-Wan Cho. "Generalization of ZYT-linearizability for bilinear datalog programs." Information and Computation 188, no. 1 (January 2004): 77–98. http://dx.doi.org/10.1016/s0890-5401(03)00172-x.

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Al-Khayyal, F. A. "Jointly constrained bilinear programs and related problems: An overview." Computers & Mathematics with Applications 19, no. 11 (1990): 53–62. http://dx.doi.org/10.1016/0898-1221(90)90148-d.

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Hasan, M. M. Faruque, and I. A. Karimi. "Piecewise linear relaxation of bilinear programs using bivariate partitioning." AIChE Journal 56, no. 7 (November 30, 2009): 1880–93. http://dx.doi.org/10.1002/aic.12109.

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Dey, Santanu S., Asteroide Santana, and Yang Wang. "New SOCP relaxation and branching rule for bipartite bilinear programs." Optimization and Engineering 20, no. 2 (September 21, 2018): 307–36. http://dx.doi.org/10.1007/s11081-018-9402-9.

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Quesada, Ignacio, and Ignacio E. Grossmann. "A global optimization algorithm for linear fractional and bilinear programs." Journal of Global Optimization 6, no. 1 (January 1995): 39–76. http://dx.doi.org/10.1007/bf01106605.

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Kolodziej, Scott, Pedro M. Castro, and Ignacio E. Grossmann. "Global optimization of bilinear programs with a multiparametric disaggregation technique." Journal of Global Optimization 57, no. 4 (January 3, 2013): 1039–63. http://dx.doi.org/10.1007/s10898-012-0022-1.

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Al-Khayyal, Faiz A. "Note on solving linear complementarity problems as jointly constrained bilinear programs." Journal of Mathematical Analysis and Applications 158, no. 2 (July 1991): 583–89. http://dx.doi.org/10.1016/0022-247x(91)90259-3.

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Dissertations / Theses on the topic "Bilinear programs"

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Adams, Warren Philip. "The mixed-integer bilinear programming problem with extensions to zero-one quadratic programs." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/74711.

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This research effort is concerned with a class of mathematical programming problems referred to as Mixed-Integer Bilinear Programming Problems. This class of problems, which arises in production, location-allocation, and distribution-application contexts, may be considered as a discrete version of the well-known Bilinear Programming Problem in that one set of decision variables is restricted to be binary valued. The structure of this problem is studied, and special cases wherein it is readily solvable are identified. For the more general case, a new linearization technique is introduced and demonstrated to lead to a tighter linear programming relaxation than obtained through available linearization methods. Based on this linearization, a composite Lagrangian relaxation-implicit enumeration-cutting plane algorithm is developed. Extensive computational experience is provided to test the efficiency of various algorithmic strategies and the effects of problem data on the computational effort of the proposed algorithm. The solution strategy developed for the Mixed-Integer Bilinear Programming Problem may be applied, with suitable modifications,. to other classes of mathematical programming problems: in particular, to the Zero-One Quadratic Programming Problem. In what may be considered as an extension to the work performed on the Mixed-Integer Bilinear Programming Problem, a solution strategy based on an equivalent linear reformulation is developed for the Zero-One Quadratic Programming Problem. The strategy is essentially an implicit enumeration algorithm which employs Lagrangian relaxation, Benders' cutting planes, and local explorations. Computational experience for this problem class is provided to justify the worth of the proposed linear reformulation and algorithm.
Ph. D.
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Silva, Neto José Antônio da. "Gravitação f(R) com torção e violação de Lorentz : cenários naturais para novos espinores." reponame:Repositório Institucional da UFABC, 2017.

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Orientador: Prof. Dr. Roldão da Rocha Junior
Tese (doutorado) - Universidade Federal do ABC, Programa de Pós-Graduação em Física, 2017.
A classificação de espinores de Lounesto é uma ferramenta importante na física fundamental, pois explicita a plêiade de tipos de espinores que vão além daqueles usados na teoria quântica de campos (TQC). Nesse trabalho, mostramos como a classificação surge em dois tópicos: primeiro mostramos que os bilineares covariantes surgem naturalmente na equção de movimento para um campo fermiônico num fundo do tipo Riemann-Cartan (com dinâmica gravitacional f(R)) e identificamos um espinor singular (um ag-dipole) como sendo solução do modelo apresentado. Esta é a primeira solução ag-dipole encontrada na literatura. Investigamos o comportamento dos bilineares covariantes dentro do contextificação dos espinores, de acordo com seus bilineares covariantes, a cenarios com quebra de simetria de Lorentz. Finalmente, provamos que espinores singulares do tipo agpole são menos suscetíveis a efeitos de violação de Lorentz.
The Lounesto spinor classifcation is an important tool in fundamental physics, because it makes explicit the pleiade of spinors types, beyond the used in quantum field theory (QFT). In this work, we show how the classification emerges in two topics: first we show that the bilinear covariants arise naturally in the equation of motion for a fermionic field in a Riemann-Cartan background (with gravitational dynamics f(R)) and we identify a singular espinor field (a ag-dipole one) as a solution of the presented model. This is the first solution ag-dipole founded in the literature. We investigated the behavior of the bilinear covariants in the context of the called standard model extension of Colladay and Kostelecky and we present examples of transformations that violate the Lorentz symmetry, providing an extension of spinors classificaiton, according to bilinear covariants, to scenarios with broken Lorentz symmetry. Finally, we proved that singular spinors of type agpole are less susceptible to efects of Lorentz violation.
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Ribeiro, Isabel Cristina da Silva Martins. "Um estudo de técnicas enumerativas e bilineares para programas lineares complementares." Master's thesis, 1996. http://hdl.handle.net/10216/12753.

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Ribeiro, Isabel Cristina da Silva Martins. "Um estudo de técnicas enumerativas e bilineares para programas lineares complementares." Dissertação, 1996. http://hdl.handle.net/10216/12753.

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Books on the topic "Bilinear programs"

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Bekiroğlu, Harun, and Talip Tuğrul. İlahiyat Araştırmalarında Veri Taraması: Veri Tabanları – Kütüphaneler - Atıf Dizinleri. Edited by Abdullah Demir. Oku Okut Yayınları, 2021. http://dx.doi.org/10.55709/okuokutyayinlari.11.

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Bu çalışma, İslami ilimler özelinde ön plana çıkan ulusal ve uluslararası veri tabanlarını, kütüphaneleri ve atıf tespit eden dijital mecraları tanıtmayı amaçlamıştır. Bunlarla birlikte atıf üzerindeki veri tabanları da araştırmanın içerisine dâhil edilmiştir. Literatür taraması, akademik çalışmanın sacayaklarından birisidir. Günümüzde literatür taraması genellikle sanal ortamlardaki veri tabanları ile yapılmaktadır. İslami ilimlerin tüm disiplinlerine ait literatürü, ayrıntılarıyla barındıran tek bir veri tabanı mevcut değildir. Birden çok veri tabanı araması ile daha kapsamlı bir literatüre ulaşılması mümkün olacaktır. Ancak önümüzdeki gelişmeler, veri tabanlarının gün geçtikçe kapsamlarını büyüteceklerini göstermektedir. Bu kapsamda klasik kaynaklar, yazmalar, tarihsel kayıtlar, arşiv ve siciller, güncel çalışmalar (kitap, tez, makaleler), akademik ve popüler dergiler, görsel malzemeler (afişler, kartpostallar, pullar vs.), sesli ve görüntülü kayıtlar, gazeteler, bütünüyle dijital ortama aktarılarak bu veri tabanlarının bünyesine kullanıcıların hizmetine sunulacaktır. İslami ilimler akademyası hızlı bir şekilde dijitalleşmektedir. Birçok elektronik ilmi program da gelişimini sürdürmektedir. Araştırmamız, Türkiye İlahiyat ve İslami ilimler fakültelerinin sıklıkla kullanması gereken veri tabanlarının tanıtılmasıyla sınırlandırılmıştır. Özellikle literatür taraması ve lisansüstü eğitime başlayanların görmesi ve bilmesi gereken sitelerin tanıtılması da amaçlanmıştır. Çalışmamızda İslami ilimler alanında yaygın olarak bilinen veri tabanları ve kütüphanelerin web sayfalarından tanıtıcı bilgiler alınarak ilgili veri tabanları tanıtılmaya çalışılmıştır. Bunun yanı sıra “İlahiyat alanında dijital bir ortamda veya veri tabanında yer alan bir tez, makale, dergi nasıl aranır? Nasıl bulunur? Nerede bulunur?” sorularının cevapları verilmeye çalışılmış, uygulamalı olarak da gösterilmiştir. Uygulamalar gösterilirken her bir dizin, veri tabanı ve kütüphanenin dikkat edilmesi gereken tarafına dair ekran görüntüleri alınarak konu teyit edilmiştir.
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Book chapters on the topic "Bilinear programs"

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Gu, Xiaoyi, Santanu S. Dey, and Jean-Philippe P. Richard. "Lifting Convex Inequalities for Bipartite Bilinear Programs." In Integer Programming and Combinatorial Optimization, 148–62. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73879-2_11.

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Chen, Xiaofeng, Fangguo Zhang, Divyan M. Konidala, and Kwangjo Kim. "New ID-Based Threshold Signature Scheme from Bilinear Pairings." In Progress in Cryptology - INDOCRYPT 2004, 371–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-30556-9_29.

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Zhang, Fangguo, Xiaofeng Chen, Willy Susilo, and Yi Mu. "A New Signature Scheme Without Random Oracles from Bilinear Pairings." In Progress in Cryptology - VIETCRYPT 2006, 67–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11958239_5.

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Trollope, James E., and Keith J. Burnham. "Iterative Hybrid Identification of Spatial Bilinear Models in the Presence of Uncertainty." In Progress in Systems Engineering, 769–73. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-08422-0_111.

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Zhang, Fangguo, Reihaneh Safavi-Naini, and Willy Susilo. "Efficient Verifiably Encrypted Signature and Partially Blind Signature from Bilinear Pairings." In Progress in Cryptology - INDOCRYPT 2003, 191–204. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-24582-7_14.

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Ghadafi, Essam. "Further Lower Bounds for Structure-Preserving Signatures in Asymmetric Bilinear Groups." In Progress in Cryptology – AFRICACRYPT 2019, 409–28. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23696-0_21.

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Stahl, Nadine, Björn Liljegren-Sailer, and Nicole Marheineke. "Moment Matching Based Model Order Reduction for Quadratic-Bilinear Systems." In Progress in Industrial Mathematics at ECMI 2018, 551–57. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-27550-1_70.

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Datta, Pratish, Ratna Dutta, and Sourav Mukhopadhyay. "Adaptively Secure Unrestricted Attribute-Based Encryption with Subset Difference Revocation in Bilinear Groups of Prime Order." In Progress in Cryptology – AFRICACRYPT 2016, 325–45. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31517-1_17.

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Bogataj, Miloš, and Zdravko Kravanja. "Global Optimization of Bilinear Programs by Elementary Functions Substitutions." In Computer Aided Chemical Engineering, 1969–74. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-823377-1.50329-3.

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Liang, Jun, and Hyeong Seon Yoo. "A Flexible ID-Based Group Key Agreement Protocol with Bilinear Pairings." In Recent Progress in Computational Sciences and Engineering, 325–28. CRC Press, 2019. http://dx.doi.org/10.1201/9780429070655-80.

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Conference papers on the topic "Bilinear programs"

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Huang, Deqing, and Sergei Chernyshenko. "Long-Time Average Cost Control of Polynomial Systems: A Sum-of-Squares-Based Small-Feedback Approach." In ASME 2015 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/dscc2015-9684.

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This paper provides a proof of concept of the recent novel idea in the area of long-time average cost control. Meanwhile, a new method of overcoming the well-known difficulty of nonconvexity of simultaneous optimization of a control law and an additional tunable function is given. First, a recently-proposed method of obtaining rigorous bounds of long-time average cost is outlined for the uncontrolled system with polynomials of system state on the right-hand side. In this method the polynomial constraints are relaxed to be sum-of-squares and formulated as semi-definite programs. It was proposed to use the upper bound of long-time average cost as the objective function instead of the time-average cost itself in controller design. In the present paper this suggestion is implemented for a particular system and is shown to give good results. Designing the optimal controller by this method requires optimising simultaneously both the control law and a tunable function similar to the Lyapunov function. The new approach proposed and implemented in this paper for overcoming the inherent non-convexity of this optimisation is based on a formal assumption that the amplitude of control is small. By expanding the tunable function and the bound in the small parameter, the long-time average cost is reduced by minimizing the respective bound in each term of the series. The derivation of all the polynomial coefficients in controller is given in terms of the solvability conditions of state-dependent linear and bilinear inequalities. The resultant sum-of-squares problems are solved in sequence, thus avoiding the non-convexity in optimization.
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Bacic, M., M. Cannon, and B. Kouvaritakis. "Feedback linearization constrained NMPC for bilinear systems." In 4th International Conference on Control and Automation. Final Program and Book of Abstracts. IEEE, 2003. http://dx.doi.org/10.1109/icca.2003.1595025.

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Peiming, Li, Mei Shengquan, and Ma Qingpo. "An improved bilinear interpolation travel-time ray-tracing method for tomostatics." In SEG Technical Program Expanded Abstracts 2012. Society of Exploration Geophysicists, 2012. http://dx.doi.org/10.1190/segam2012-0329.1.

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Tsen, Chun-Zen. "Dispersion Behaviors of Wedge Waves Propagating along Bilinear Wedges." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION. AIP, 2005. http://dx.doi.org/10.1063/1.1916669.

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Mukhtar, Moeed, George T. C. Chiu, Gioia Massa, and Cary A. Mitchell. "Modeling and Control of the pH Neutralization Process for a Recirculating Hydroponic Growth Chamber." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14198.

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In this paper, a pH control system for an experimental recirculating hydroponic growth chamber for the NASA Mars exploration program has been modeled and implemented. The resulting model has a bilinear Weiner type structure. A novel approximation approach is presented to obtain a simplified plant model controller design. Perturbation analysis validates the applicability of the approximation for the specific pH control of a closed-loop hydroponic growth chamber. A modified PI controller that takes into account on-off nature of the solenoid valve actuator was designed to control the pH level. The closed-loop system is shown to be BIBO stable with respect to the original bilinear plant model. Experimental results for reference tracking and disturbance rejection in an operational hydroponic chamber with growing plants have demonstrated the effectiveness of the proposed approach.
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Zhao, Weixin, B. Terry Beck, Robert J. Peterman, Chih-Hang John Wu, Naga Narendra B. Bodapati, and Grace Lee. "Reliable Transfer Length Assessment for Real-Time Monitoring of Railroad Crosstie Production." In 2014 Joint Rail Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/jrc2014-3830.

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Automated in-plant diagnostic testing of prestressed concrete railroad crossties is now within reach due to recent progress in robust surface strain measurement techniques. The newly developed non-contact Laser Speckle Imaging (LSI) technique has been shown to provide rapid and accurate surface strain profile measurement, which is a key requirement for rapid transfer length assessment. Accurate determination of transfer length is critical for maintaining continuous production quality in the modern manufacture of prestressed concrete railroad crossties. Conventional assessment of transfer length generally presumes the underlying existence of a bilinear prestressing force distribution and a corresponding bilinear surface strain profile. Furthermore, it is well-known that this bilinear profile is smoothed due to the effects of finite gauge length during the process of measuring surface strain. In addition, recent extensive crosstie measurements in concrete railroad tie plants have shown significant departures from this simple bilinear profile, which bring to question the general validity and reliability of the traditional 95% AMS (95% Average Maximum Strain) method. Deviations from the simple bilinear profile shape were shown to be partially due to the non-prismatic shape of typical concrete railroad ties. In addition, extensive comparisons between predicted and measured surface strain profiles on numerous crossties suggest that the underlying strain distribution for crossties is best represented by an exponential strain profile, with an asymptotic approach to the fully-developed compressive strain. This is in contrast with extensive testing of prisms with fixed cross-section and fixed prestressing wire eccentricity, for which the surface strain appears to be best represented by the simple bilinear strain profile. Clearly, departures from non-prismatic behavior have added complexity to transfer length measurement. If accurate and reliable measurements of this important quality control parameter are to be realized, these issues of transfer length uncertainty need to be addressed. This paper provides an experimental comparison of several possible alternative transfer length assessment procedures, in an attempt to answer important uncertainty questions which need to be addressed if rapid real-time transfer length is to be achieved. It is shown that in spite of considerable differences in the transfer length processing methods, and significant departures from prismatic behavior, the averaged results are in many cases consistent with the simple bilinear underlying strain profile assumption. Bias in the measurement of crosstie transfer length due to non-prismatic behavior will also be investigated in this paper.
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Parmar, Shreya, Xin Wang, Bill (W R. ). Tyson, and Su Xu. "Simulation of Ductile Fracture in Pipeline Steels Under Varying Constraint Conditions Using Cohesive Zone Modeling." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45873.

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Fracture propagation toughness is important to pipeline steels. In this study, the effect of non-singular T-stress (a measure of constraint) on crack growth resistance curves (R-curves) and crack tip opening angle (CTOA) was investigated using modified boundary layer (MBL) models of pipeline steels. Two sets of steel types: 1) TH (a typical high strength steel) and 2) C4 (X100 steel) were used in this work. Surface-based cohesive zone models with four sets of bilinear traction-separation (TS) laws were used for TH steel. The models of C4 steel were computed using element-based cohesive zone modeling with one bilinear TS law. All finite element simulations were conducted using the finite element (FE) program ABAQUS. It was assumed in these simulations that there was no effect of T-stress on the TS laws per se. With this assumption, it was found that the T-stress does not have a significant effect on the CTOA for the two materials studied.
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El-Shaer, Ahmed H., Tao Zhang, and Mohammad Al Janaideh. "On Robust Disturbance Observer Design Using Semi-Definite Programming." In ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control. ASMEDC, 2011. http://dx.doi.org/10.1115/dscc2011-6149.

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This paper is concerned with optimal synthesis of disturbance observers guaranteeing closed loop robust tracking and disturbance rejection performance. The approach presented makes use of internal model-based estimation of exogenous disturbances, where the internal model dynamics is chosen with at least one of its eigenvalues at the origin. The synthesis is then formulated as an H∞ weighted-sensitivity optimization for static output feedback (SOF) gain of a Luenberger observer. A linearization method is then implemented to solve the bilinear-matrix-inequality (BMI) constrained semi-definite program (SDP) for a (sub)optimal static gain.
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Zhang, Xiaoyan, Zhoumo Zeng, Jian Li, and Yang Liu. "Guide Wave-Based Inspection of Adhesively Bonded Structures in Composite Plates." In 2022 49th Annual Review of Progress in Quantitative Nondestructive Evaluation. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/qnde2022-98228.

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Abstract The existence of weakly bonded areas will greatly affect the reliability of adhesively bonded structures in composite plates which are widely used in engineering applications. The timely and effective inspection of the adhesively bonded structure is crucial. In this paper, a simulation method of bonded quality based cohesive zone model(CZM) and the RAPID imaging method based ultrasonic guided wave detection technology are proposed to realize the detection and imaging of weakly bonded areas of adhesively bonded structures in composite plates. The CZM is innovatively used for the simulation of different bonded quality, it is achieved by modifying the constitutive relation curve of bilinear traction-separation law. Then, the influence of the degradation of bonded quality on the propagation characteristics of guided waves was explored. The results show that different bonded conditions have a significant impact on the guided wave propagation characteristics which enable the inspection of weakly bonded areas. Finally, based on the guided wave detection method and the cross covariance-based RAPID imaging algorithm, the detection and imaging of the weakly bonded area of the adhesively bonded structures are realized.
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Wong, C. F., O. Odejimi, B. M. Conn, J. Davis, J. Ataiants, E. V. Fedorova, M. Suen, S. J. Lee, A. Osornio, and S. E. Lankenau. "Gender by Ethnicity Differences in Trajectory of Cannabis Use Among Cannabis-Using Young Adults during Pre- and Post-Recreational Cannabis Legalization (RCL) in Los Angeles." In 2022 Annual Scientific Meeting of the Research Society on Marijuana. Research Society on Marijuana, 2022. http://dx.doi.org/10.26828/cannabis.2022.02.000.22.

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Introduction: By the end of 2022, most states across the US except for three would have enacted some form of legalized cannabis policy. Support for the legalization of cannabis for recreational purposes are particularly high among young adults. Given the rapidly changing policy landscape, understanding how these policies may have impacted cannabis use among different groups of young people can help inform current and future policy decisions and programs/intervention to curb problematic use. There is evidence to suggest significant and meaningful differences in use behaviors among individuals from different racial/ethnic backgrounds and gender identities. However, limited research has examined how these groups based on the intersection of these identities might differ in their cannabis use prior to and after recreational cannabis legalization (RCL). Method: 366 cannabis-using young adults (aged 18-26) comprising 210 medical cannabis patients and 156 non-patients were surveyed annually between 2014-2020 in Los Angeles culminating into 6 waves of data. Bilinear spline growth curve models examined changes in cannabis use trajectory, with three waves pre-RCL and three waves post-RCL after accounting for patient status and age. Multi-group analyses investigated differences between six genderXrace/ethnicity subgroups: 1) African American Females (AAF); 2) Caucasian/White Females (WF); 3) Hispanic Females/Latina (HF); 4) African American Males (AAM); 5) Caucasian/White Males (WM); and 6) Hispanic Males/Latino (HM). Omnibus tests investigated homogeneity in the latent growth constructs across the 6 groups. We tested equality of covariances (correlations) and means across groups (p < .05). If inequality was shown, further tests were conducted. Results: Overall, significant group differences were observed in cannabis use trajectories and the correlations between intercepts and growth factors. Specifically, HF, HM, AAM and WM reported moderate level of cannabis use (between 50 to 56 days of use) compared to AAF and WF at baseline, whereby AAF reported significantly higher use (70.72 days) relative to all other groups. In contrast, WF reported significantly lower use (35.42 days). There were different patterns in pre-RCL growth parameters. Whereas AAF and HF had relatively flat rate of change, WF, WM, and HM had relatively similar significant decrease in use pre-RCL. Interestingly, during the period post-RCL, AAF, WM, and HM all showed significant decline in use, but WF was the only group with a significant increase in use while HF and AAM had modest increases in use. While baseline use generally predicted pre-RCL use within each subgroup (for some, baseline use led to more rapid increase while for others, it led to more rapid decrease in use), this is less true for post-RCL use. Significant effects associated with age and patient status were also observed. Conclusions: These are among the first findings to show how cannabis policy has differentially impacted cannabis use behaviors prior to and after RCL among a diverse population of cannabis-using young adults. Additional research should investigate potential mechanisms of these difference and longer-term health impacts.
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