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1. From Visual Choreographies to Flexible Information Protocols

Author

Lichtenstein, Tom, Chopra, Amit K., Singh, Munindar P., Weske, Mathias, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gaaloul, Walid, editor, Sheng, Michael, editor, Yu, Qi, editor, and Yangui, Sami, editor

Published
2025
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2. Contributors

Author

Acampora, Gregory Alexander, primary, Ahmad, Zeba N., additional, Alpay, Menekse, additional, Alpert, Jonathan E., additional, Babadi, Baktash, additional, Baek, Ji Hyun, additional, Baig, Mizra, additional, Bains, Ashika, additional, Baker, Amanda Waters, additional, Baldi, Olivia, additional, Beach, Scott R., additional, Beck, BJ, additional, Beckwith, Noor, additional, Benedek, David M., additional, Beresin, Eugene V., additional, Biederman, Joseph, additional, Bird, Suzanne A., additional, Blais, Mark A., additional, Bosson, Rahel, additional, Brendel, Rebecca Weintraub, additional, Bui, Eric, additional, Camprodon, Joan A., additional, Capawana, Michael R., additional, Caplan, Jason P., additional, Carter, Christopher, additional, Cassano, Paolo, additional, Cather, Corinne, additional, Celano, Christopher M., additional, Chang, Trina E., additional, Charoenpong, Prangthip, additional, Chemali, Zeina N., additional, Chen, Justin, additional, Chopra, Amit, additional, Choukas, Nathaniel, additional, Chung, Sun Young, additional, Cohen, Jonah, additional, Cohen, Lee S., additional, Colvin, Mary K. (Molly), additional, Conteh, Nkechi, additional, Crain, Laura D., additional, Cremens, M. Cornelia, additional, Cusin, Cristina, additional, Dekel, Sharon, additional, Denysenko, Lex, additional, Dickerson, Bradford C., additional, Donovan, Abigail L., additional, Doorley, James, additional, Dougherty, Darin D., additional, Ducharme, Simon, additional, Eddy, Kamryn T., additional, Edersheim, Judith G., additional, Evanoff, Anastasia B., additional, Fava, Maurizio, additional, Finn, Christine T., additional, Fernandez-Robles, Carlos, additional, Fishel, Anne K., additional, Forchelli, Gina, additional, Freudenreich, Oliver, additional, Fricchione, Gregory L., additional, Friedman, Nora D.B., additional, Gatchel, Jennifer R., additional, Gelaye, Bizu, additional, Georgiopoulos, Anna M., additional, Ghaznavi, Sharmin, additional, Ginsburg, Richard, additional, Gold, Alexandra K., additional, Gordon, Christopher D., additional, Gray, Caroline A., additional, Greenberg, Donna B., additional, Greer, Joseph, additional, Hazen, Eric P., additional, Henry, Michael E., additional, Herman, John B., additional, Himes, Susan, additional, Hogan, Charlotte, additional, Holt, Daphne J., additional, Huffman, Jeffery C., additional, Huguenel, Brynn, additional, Ipek, Simay, additional, Irwin, Kelly Edwards, additional, Ivkovic, Ana, additional, Jacobs, Jamie, additional, Jagodnik, Kathleen M., additional, Jain, Felipe A., additional, Jankauskaite, Greta, additional, Januzzi, James L., additional, Jenike, Michael A., additional, Jenkins, Jonathan, additional, Johnson, Justin M., additional, Julian, John N., additional, Kamali, Masoud, additional, Kaneko, Yoshio A., additional, Katz, Tamar C., additional, Keuroghlian, Alex, additional, Keuthen, Nancy J., additional, Khoshbin, Shahram, additional, Kim, Hyun-Hee, additional, Kim, Youngjung R., additional, Koh, Katherine A., additional, Kohrman, Samuel I., additional, Kontos, Nicholas, additional, Lagomasino, Isabel T., additional, Leval, Rebecca, additional, Leveroni, Catherine, additional, Lim, Carol, additional, Luccarelli, James, additional, Madarasmi, Saira, additional, Madva, Elizabeth N., additional, McCoy, Thomas H., additional, Milosavljevic, Nada, additional, Mischoulon, David, additional, Miyares, Peyton, additional, Morelli, Leah W., additional, Rodriguez, Alejandra E. Morfin, additional, Murray, Evan D., additional, Murray, Helen Burton, additional, Nejad, Shamim H., additional, Newhouse, Amy L., additional, Nicolson, Stephen E., additional, Nierenberg, Andrew A., additional, Nisavic, Mladen, additional, Nonacs, Ruta M., additional, Öngür, Dost, additional, Onyeaka, Henry, additional, Orr, Scott P., additional, Ostacher, Michael J., additional, Pace-Schott, Edward F., additional, Papakostas, George I., additional, Paudel, Shreedhar, additional, Peay, Celeste, additional, Pederson, Aderonke Bamgbose, additional, Penava, Susan J., additional, Perez, David L., additional, Perlis, Roy H., additional, Peters, Amy T., additional, Pinsky, Elizabeth G., additional, Pollak, Lauren Norton, additional, Pollastri, Alisha R., additional, Post, Loren M., additional, Powell, Alicia D., additional, Prager, Laura M., additional, Praschan, Nathan, additional, Price, Bruce H., additional, Prince, Jefferson B., additional, Probert, Julia M., additional, Prom, Maria C., additional, Punko, Diana, additional, Rauch, Scott L., additional, Raviola, Giuseppe J., additional, Reilly-Harrington, Noreen A., additional, Ritchie, Elspeth Cameron, additional, Rivas-Vazquez, Rafael, additional, Robinson, Ellen M., additional, Roffman, Joshua L., additional, Rubin, David H., additional, Ruchensky, Jared R., additional, Salvi, Joshua D., additional, Sanders, Kathy M., additional, Sanders, Wesley M., additional, Schlozman, Steven C., additional, Schouten, Ronald, additional, Schuster, Randi, additional, Shafer, Linda C., additional, Sheets, Jennifer, additional, Sher, Yelizaveta, additional, Sherman, Janet Cohen, additional, Sinclair, Samuel Justin, additional, Smith, Felicia A., additional, Sockalingam, Sanjeev, additional, Sogg, Stephanie, additional, Sorg, Emily M., additional, Sprich, Susan E., additional, Stein, Michelle B., additional, Stern, Theodore A., additional, Stoler, Joan M., additional, Stone, Mira, additional, Surman, Craig B.H., additional, Sylvia, Louisa G., additional, Tanev, Kaloyan S., additional, Tayeb, Haythum O., additional, Taylor, John B., additional, Thom, Robyn P., additional, Thomas, Jennifer J., additional, Tillman, Emma M., additional, Traeger, Lara, additional, Trinh, Nhi-Ha, additional, Uchida, Mai, additional, Ulman, Kathleen Hubbs, additional, Valera, Eve M., additional, Van Alphen, Manjola U., additional, Vazquez, Rafael, additional, Viguera, Adele C., additional, Wang, Betty, additional, Weilburg, Jeffrey B., additional, Weinberg, Marc, additional, Weinstein, Sylvie J., additional, Weisholtz, Daniel, additional, Wilens, Timothy E., additional, Wilhelm, Sabine, additional, Winkelman, John W., additional, Wright, Christopher L., additional, Wynn, Gary H., additional, Yeung, Albert, additional, Zakhary, Lisa, additional, and Zambrano, Juliana, additional

Published
2025
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3. Sleep Disorders

Author

Chopra, Amit, primary, Weilburg, Jeffrey B., additional, and Winkelman, John W., additional

Published
2025
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6. Pippi: Practical Protocol Instantiation

Author

Christie V, Samuel H., Chopra, Amit K., and Singh, Munindar P.

Subjects
Computer Science - Multiagent Systems
Abstract

A protocol specifies interactions between roles, which together constitute a multiagent system (MAS). Enacting a protocol presupposes that agents are bound to the its roles. Existing protocol-based approaches, however, do not adequately treat the practical aspects of how roles bindings come about. Pippi addresses this problem of MAS instantiation. It proposes the notion of a metaprotocol, enacting which instantiates a MAS suitable for enacting a given protocol. Pippi demonstrates the subtleties involved in instantiating MAS arising from protocol composition, correlation, and decentralization. To address these subtleties and further support practical application patterns, we introduce an enhanced protocol language, with support for parameter types (including role and protocol typed parameters, for metaprotocols), interface flexibility, and binding constraints. We discuss the realization of our approach through an extended agent architecture, including the novel concept of a MAS adapter for contact management. We evaluate Pippi's expressiveness by demonstrating common patterns for agent discovery., Comment: 8 pages, to be published in Proc. of the 21st International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2022), Online

Published
2022

7. Hercule: Representing and Reasoning about Norms as a Foundation for Declarative Contracts over Blockchain

Author

Christie V, Samuel H., Chopra, Amit K., and Singh, Munindar P.

Subjects
Computer Science - Multiagent Systems
Abstract

Current blockchain approaches for business contracts are based on smart contracts, namely, software programs placed on a blockchain that are automatically executed to realize a contract. However, smart contracts lack flexibility and interfere with the autonomy of the parties concerned. We propose Hercule, an approach for declaratively specifying blockchain applications in a manner that reflects business contracts. Hercule represents a contract via regulatory norms that capture the involved parties' expectations of one another. It computes the states of norms (hence, of contracts) from events in the blockchain. Hercule's novelty and significance lie in that it operationalizes declarative contracts over semistructured databases, the underlying representation for practical blockchain such as Hyperledger Fabric and Ethereum. Specifically, it exploits the map-reduce capabilities of such stores to compute norm states. We demonstrate that our implementation over Hyperledger Fabric can process thousands of events per second, sufficient for many applications.

Published
2021

12. An Evaluation of Communication Protocol Languages for Engineering Multiagent Systems

Author

Chopra, Amit K., Christie V, Samuel H., and Singh, Munindar P.

Subjects
Computer Science - Software Engineering, D.3.0, D.2.11, I.2.11
Abstract

Communication protocols are central to engineering decentralized multiagent systems. Modern protocol languages are typically formal and address aspects of decentralization, such as asynchrony. However, modern languages differ in important ways in their basic abstractions and operational assumptions. This diversity makes a comparative evaluation of protocol languages a challenging task. We contribute a rich evaluation of modern protocol languages based on diverse approaches. Among the selected languages, Scribble is based on session types; Trace-C and Trace-F on trace expressions; HAPN on hierarchical state machines, and BSPL on information causality. Our contribution is four-fold. One, we contribute important criteria for evaluating protocol languages. Two, for each criterion, we compare the languages on the basis of whether they are able to specify elementary protocols that go to the heart of the criterion. Three, for each language, we map our findings to a canonical architecture style for multiagent systems, highlighting where the languages depart from the architecture. Four, we identify a few design principles for protocol languages as guidance for future research.

Published
2019

13. Multiagent Foundations for Distributed Systems: A Vision

Author

Chopra, Amit K., Christie V, Samuel H., Singh, Munindar P., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Alechina, Natasha, editor, Baldoni, Matteo, editor, and Logan, Brian, editor

Published
2022
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18. Violable Contracts and Governance for Blockchain Applications

Author

Singh, Munindar P. and Chopra, Amit K.

Subjects
Computer Science - Computers and Society, Computer Science - Multiagent Systems
Abstract

We examine blockchain technologies, especially smart contracts, as a platform for decentralized applications. By providing a basis for consensus, blockchain promises to upend business models that presuppose a central authority. However, blockchain suffers from major shortcomings arising from an over-regimented way of organizing computation that limits its prospects. We propose a sociotechnical, yet computational, perspective that avoids those shortcomings. A centerpiece of our vision is the notion of a declarative, violable contract in contradistinction to smart contracts. This new way of thinking enables flexible governance, by formalizing organizational structures; verification of correctness without obstructing autonomy; and a meaningful basis for trust.

Published
2018

20. Tosca: Operationalizing Commitments Over Information Protocols

Author

King, Thomas C., Günay, Akın, Chopra, Amit K., and Singh, Munindar P.

Subjects
Computer Science - Artificial Intelligence
Abstract

The notion of commitment is widely studied as a high-level abstraction for modeling multiagent interaction. An important challenge is supporting flexible decentralized enactments of commitment specifications. In this paper, we combine recent advances on specifying commitments and information protocols. Specifically, we contribute Tosca, a technique for automatically synthesizing information protocols from commitment specifications. Our main result is that the synthesized protocols support commitment alignment, which is the idea that agents must make compatible inferences about their commitments despite decentralization.

Published
2017
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22. Lipoid Pneumonia

Author

Chieng, Hau C., Ibrahim, Ammoura, Chong, Woon H., Freed, Howard, Fabian, Thomas, Saha, Biplab, Foulke, Llewellyn, and Chopra, Amit

Published
2022
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30. Pneumothorax in critically ill patients with COVID-19 infection: Incidence, clinical characteristics and outcomes in a case control multicenter study

Author

Chopra, Amit, Al-Tarbsheh, Ali Hani, Shah, Nidhi J., Yaqoob, Hamid, Hu, Kurt, Feustel, Paul J., Ortiz-Pacheco, Ronaldo, Patel, Kinner M., Oweis, Jozef, Kozlova, Natalya, Zouridis, Spyridon, Ahmad, Sahar, Epelbaum, Oleg, Chong, Woon H., Huggins, John T., Saha, Biplab K., Conuel, Edward, Chieng, Hau, Mullins, Jeannette, Bajaj, Divyansh, Shkolnik, Boris, Vancavage, Rachel, Madisi, Nagendra, and Judson, Marc A.

Published
2021
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34. Large-Scale Multi-omic Analysis of COVID-19 Severity

Author

Overmyer, Katherine A., Shishkova, Evgenia, Miller, Ian J., Balnis, Joseph, Bernstein, Matthew N., Peters-Clarke, Trenton M., Meyer, Jesse G., Quan, Qiuwen, Muehlbauer, Laura K., Trujillo, Edna A., He, Yuchen, Chopra, Amit, Chieng, Hau C., Tiwari, Anupama, Judson, Marc A., Paulson, Brett, Brademan, Dain R., Zhu, Yunyun, Serrano, Lia R., Linke, Vanessa, Drake, Lisa A., Adam, Alejandro P., Schwartz, Bradford S., Singer, Harold A., Swanson, Scott, Mosher, Deane F., Stewart, Ron, Coon, Joshua J., and Jaitovich, Ariel

Published
2021
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35. Fault Tolerance in Multiagent Systems

Author

Christie V, Samuel H., Chopra, Amit K., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Baroglio, Cristina, editor, Hubner, Jomi F., editor, and Winikoff, Michael, editor

Published
2020
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38. Kratom use and mental health: A systematic literature review and case example.

Author

Bachu, Anil K., Singal, Prakamya, Griffin, Brittany, Harbaugh, Lauren, Prasad, Sakshi, Jain, Lakshit, Mohiuddin, Syed, Papudesi, Bhavani Nagendra, Nagi, Tarika, Youssef, Nagy A., Chopra, Amit, and Ahmed, Saeed

Subjects
MENTAL health, CENTRAL nervous system stimulants, AFFECTIVE disorders, SEVERITY of illness index, SYMPTOMS, PLANT extracts, SYSTEMATIC reviews, MEDLINE, MEDICINAL plants, PSYCHOSES, ONLINE information services, DISEASE progression, PSYCHOLOGY information storage & retrieval systems
Abstract

Objective: This review aims to synthesize and critically evaluate the existing literature on kratom use and its possible association with induction of psychotic and manic symptoms, in order to identify potential areas for future research that would improve our understanding of the risks of kratom consumption. Methods: An electronic search was performed using five major databases: including PubMed, Scopus, Google Scholar, Web of Science, and PsycINFO. keywords such as kratom, Mitragyna speciosa, mania, psychosis, bipolar disorder, schizophrenia, schizoaffective, case report, and case series. The retrieved articles on initial search were screened based on predefined inclusion and exclusion criteria for this study, and then data synthesis was performed to analyze relevant information from the included studies. Results: Six prior papers were found using (1 case series and 5 case reports). These included 10 cases, involving kratom use association with mania and psychosis. The ages of patients ranged from 28 to 55 years mean age was 38, and (SD 13.74), the majority were males (8 out of 11). Patients had durations of kratom use ranging from 2 wk to 15 years. Significant association was found between kratom use and the worsening of psychotic and manic symptoms in individuals with psychiatric conditions. Conclusions: Our research highlights the possibility of worsening preexisting psychiatric conditions in the context of kratom use. This study emphasizes the need for clinical evaluation of patients for kratom use. Additional research is required to gain a deeper understanding of the potential mental health implications of kratom use, especially among vulnerable populations. [ABSTRACT FROM AUTHOR]

Published
2024
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48. Stellar: A Programming Model for Developing Protocol-Compliant Agents

Author

Günay, Akın, Chopra, Amit K., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Weyns, Danny, editor, Mascardi, Viviana, editor, and Ricci, Alessandro, editor

Published
2019
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49. Blood DNA methylation and COVID-19 outcomes

Author

Balnis, Joseph, Madrid, Andy, Hogan, Kirk J., Drake, Lisa A., Chieng, Hau C., Tiwari, Anupama, Vincent, Catherine E., Chopra, Amit, Vincent, Peter A., Robek, Michael D., Singer, Harold A., Alisch, Reid S., and Jaitovich, Ariel

Published
2021
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