activity
20172026
most citedLarge Language Models for User Interest Journeys

6 citations · 21 across the 10 of their papers we have counts for

collaborators

10 papers

cs.IR2026

LLM-Based User Personas for Recommendations at Scale

Haoting Wang, Haokai Lu, Zheyun Feng +14

Large Language Models (LLMs) offer unprecedented potential for enhancing recommendation systems through their world knowledge and reasoning capabilities. However, existing approach…

cs.AI2025

Conversational Planning for Personal Plans

Konstantina Christakopoulou, Iris Qu, John Canny +4

The language generation and reasoning capabilities of large language models (LLMs) have enabled conversational systems with impressive performance in a variety of tasks, from code…

cs.AI2024★ 2 cited

Agents Thinking Fast and Slow: A Talker-Reasoner Architecture

Konstantina Christakopoulou, Shibl Mourad, Maja Matarić

Large language models have enabled agents of all kinds to interact with users through natural conversation. Consequently, agents now have two jobs: conversing and planning/reasonin…

cs.CL2023★ 6 cited

Large Language Models for User Interest Journeys

Konstantina Christakopoulou, Alberto Lalama, Cj Adams +10

Large language models (LLMs) have shown impressive capabilities in natural language understanding and generation. Their potential for deeper user understanding and improved persona…

cs.IR2022★ 2 cited

Reward Shaping for User Satisfaction in a REINFORCE Recommender

Konstantina Christakopoulou, Can Xu, Sai Zhang +10

How might we design Reinforcement Learning (RL)-based recommenders that encourage aligning user trajectories with the underlying user satisfaction? Three research questions are key…

cs.IR2022★ 5 cited

Rethinking Reinforcement Learning for Recommendation: A Prompt Perspective

Xin Xin, Tiago Pimentel, Alexandros Karatzoglou +3

Modern recommender systems aim to improve user experience. As reinforcement learning (RL) naturally fits this objective -- maximizing an user's reward per session -- it has become…

cs.LG2021★ 2 cited

Towards Content Provider Aware Recommender Systems: A Simulation Study on the Interplay between User and Provider Utilities

Ruohan Zhan, Konstantina Christakopoulou, Ya Le +6

Most existing recommender systems focus primarily on matching users to content which maximizes user satisfaction on the platform. It is increasingly obvious, however, that content…

cs.IR2018★ 3 cited

Adversarial Recommendation: Attack of the Learned Fake Users

Konstantina Christakopoulou, Arindam Banerjee

Can machine learning models for recommendation be easily fooled? While the question has been answered for hand-engineered fake user profiles, it has not been explored for machine l…

cs.LG2017★ 1 cited

Glass-Box Program Synthesis: A Machine Learning Approach

Konstantina Christakopoulou, Adam Tauman Kalai

Recently proposed models which learn to write computer programs from data use either input/output examples or rich execution traces. Instead, we argue that a novel alternative is t…

stat.ML2017

Recommendation under Capacity Constraints

Konstantina Christakopoulou, Jaya Kawale, Arindam Banerjee

In this paper, we investigate the common scenario where every candidate item for recommendation is characterized by a maximum capacity, i.e., number of seats in a Point-of-Interest…