activity
20222026
most citedThe Importance of Future Information in Credit Card Fraud Detection

10 citations · 14 across the 9 of their papers we have counts for

collaborators

9 papers

cs.IR2026

When Is Complex Chunking Worth It? A Multi-Objective Evaluation of Chunking Methods at Scale

Laura Caspari, Kanishka Ghosh Dastidar, Michael Dinzinger +2

Dense retrieval is commonly evaluated on benchmarks that represent each document with a single embedding, even though real-world retrieval systems often index long documents that r…

cs.SI2026

Form Without Function: Agent Social Behavior in the Moltbook Network

Saber Zerhoudi, Kanishka Ghosh Dastidar, Felix Klement +9

Moltbook is a social network where every participant is an AI agent. We analyze 1,312,238 posts, 6.7~million comments, and over 120,000 agent profiles across 5,400 communities, col…

cs.IR2026

Behind the Prompt: The Agent-User Problem in Information Retrieval

Saber Zerhoudi, Michael Granitzer, Dang Hai Dang +5

User models in information retrieval rest on a foundational assumption that observed behavior reveals intent. This assumption collapses when the user is an AI agent privately confi…

cs.LG2025

Benevolent Dictators? On LLM Agent Behavior in Dictator Games

Andreas Einwiller, Kanishka Ghosh Dastidar, Artur Romazanov +3

In behavioral sciences, experiments such as the ultimatum game are conducted to assess preferences for fairness or self-interest of study participants. In the dictator game, a simp…

cs.LG2025

Compressed Concatenation of Small Embedding Models

Mohamed Ayoub Ben Ayad, Michael Dinzinger, Kanishka Ghosh Dastidar +2

Embedding models are central to dense retrieval, semantic search, and recommendation systems, but their size often makes them impractical to deploy in resource-constrained environm…

cs.IR2025

CoRECT: A Framework for Evaluating Embedding Compression Techniques at Scale

L. Caspari, M. Dinzinger, K. Ghosh Dastidar +3

Dense retrieval systems have proven to be effective across various benchmarks, but require substantial memory to store large search indices. Recent advances in embedding compressio…

cs.CL2025

WebFAQ: A Multilingual Collection of Natural Q&A Datasets for Dense Retrieval

Michael Dinzinger, Laura Caspari, Kanishka Ghosh Dastidar +2

We present WebFAQ, a large-scale collection of open-domain question answering datasets derived from FAQ-style schema.org annotations. In total, the data collection consists of 96 m…

cs.IR2024★ 4 cited

Beyond Benchmarks: Evaluating Embedding Model Similarity for Retrieval Augmented Generation Systems

Laura Caspari, Kanishka Ghosh Dastidar, Saber Zerhoudi +2

The choice of embedding model is a crucial step in the design of Retrieval Augmented Generation (RAG) systems. Given the sheer volume of available options, identifying clusters of…

cs.LG2022★ 10 cited

The Importance of Future Information in Credit Card Fraud Detection

Van Bach Nguyen, Kanishka Ghosh Dastidar, Michael Granitzer +1

Fraud detection systems (FDS) mainly perform two tasks: (i) real-time detection while the payment is being processed and (ii) posterior detection to block the card retrospectively…