5 papers
Non-associative Hopf Algebra on Dyck Paths Arising from the Shuffle-insertion Product
Nantel Bergeron, Yuchen Guo, Huilan Li
In this paper, we define a shuffle-insertion product and a cut-box coproduct on the vector space spanned by Dyck paths, where the product is commutative but non-associative. We pro…
Abstract Priorities, Concrete Rewards: How Stated Preferences Relate to What People Reward in AI Responses
Zihan Chen, Lei Nico Zheng, Di Zhu
AI assistants built on large language models (LLMs) are trained on human feedback and increasingly personalized to users' stated preferences. Yet how closely these preferences refl…
Endorsement Without New Evidence: How Sequential Voting Inflates Mandates in Online Community Governance
Zihan Chen, Lei Nico Zheng, Di Zhu
Online communities often treat large support margins in public elections as strong mandates. We argue that such margins can overstate the independent scrutiny behind a decision. Us…
When Synthetic Users Fail: A Cross-Domain Benchmark of LLM-Simulated Human Survey Responses
Zihan Chen, Di Zhu, Lei Nico Zheng
Large language models (LLMs) are increasingly used as synthetic users, stand-ins for human respondents whose simulated answers feed product, policy, and market decisions. We ask wh…
FundaPod: A Multi-Persona Agent Pod Architecture with Knowledge Graph Memory for AI-Assisted Fundamental Investment Research
Di Zhu, Lei Nico Zheng, Zihan Chen
Large language models (LLMs) are increasingly applied in finance, yet most existing work emphasizes trading signals or financial NLP tasks centered on prediction. Institutional fun…