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I am an Assistant Professor of Economics at the Department of Social Sciences and Humanities at Indraprastha Institute of Information Technology (IIIT) Delhi. I work in various areas of Microeconomics. My current research is in decision theory (stochastic choice, bounded rationality and applications), optimal search, sequential games and network formation.
Ph.D. Economics, IIT Delhi, 2020.
Thesis title: Essays in Decision Making and Economic Networks.
Thesis Advisor: Prof. Saptarshi Mukherjee, IIT Delhi.
contact: ruhisonal [at] gmail [dot] com
Research interests:
1. Bounded Rationality and stochastic choice: I am working on developing models of stochastic choice with boundedly rational agents for example, attention constrained individuals. I specialize in axiomatic characterizations of random choice rules. I am also interested in understanding individual decision making when the set of alternatives has a structure: for example, when they appear in a sequence or at the nodes in an ordered tree.
2. Game theory and applications: I am working on games with countably infinite agents and infinite time horizon. I am interested in exploring equilibria notions in this setting and implementation of efficient equilibria.
3 . Economic networks: I am working on modeling the formation of social and economic networks. I focus on characterizing interesting behavioral phenomena such as "herding" which is often observed in online social media.
Publications:
'(Large) finite to continuum: An approximation result for electoral competition models', with Mihir Bhattacharya , Saptarshi Mukherjee and Raghul Venkatesh, Journal of Mathematical Economics (August, 2024)
'A reconciliation between cosine similarity and Euclidean distance in individual decision-making problems,' with Saptarshi Mukherjee, Indian Economic Review (December, 2023).
`Frame-based stochastic choice rule,' with Mihir Bhattacharya and Saptarshi Mukherjee, Journal of Mathematical Economics (December, 2021).
`Consumer equilibrium, random choice and hemi-Bayesian revision rule,' with Mihir Bhattacharya and Saptarshi Mukherjee, Economics Letters (August, 2020).
Working Papers:
Decision Theory:
Harichandran, A., Mukherjee, S., Muto, N. and Sonal, R., `Dynamic random choice and Inattention.'
Mukherjee, S. and Sonal, R., `Random choice from lists.'
Bhattacharya, M., Mukherjee, S. and Sonal, R., `Random choice from ordered-trees.'
Lahiri, A., Mukherjee, S. and Sonal, R., `Optimal stopping in list-based decisions.'
Game Theory:
Mukherjee, S. and Sonal, R., `Signaling and herd behavior in the formation of networks'
Mukherjee, S. and Sonal, R., `Sequential entry and network formation'
Teaching:
Game Theory, IIIT Delhi, Monsoon 2023 onwards
Convex Optimization, IIIT Delhi, Winter 2023 onwards
Microeconomics-1, Decision Theory, IIT Jodhpur
Industrial Organisation, Ashoka University
Engineering Economics and Finance, IIT Dhanbad
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