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Pearl Pu Faltings

Cette personne a quitté l’EPFL

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Publications associées (65)

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Peer Influence on the Engagement of Fitness Tracker Usage: A Diabetes and Obesity Study

Pearl Pu Faltings, Yu Chen

Maintaining a physically active lifestyle is important for diabetic and obese patients, but how to motivate them to exercise and engage them in the long run remains a challenging issue. We aim to motivate their activities using fitness trackers and prevent ...

Ieee2016

User Expectations of Conversational Chatbots Based on Online Reviews

Pearl Pu Faltings, Ekaterina Svikhnushina

Open-domain chatbots that can engage in a conversation on any topic received significant attention in the last several years, which opened opportunities for studying user interaction with them. Drawing from reviews of chatbots posted on Google Play, we exp ...

ASSOC COMPUTING MACHINERY2021

User-Involved Preference Elicitation for Product Search and Recommender Systems

Pearl Pu Faltings, Li Chen

We address user system interaction issues in product search and recommender systems: how to help users select the most preferential item from a large collection of alternatives. As such systems must crucially rely on an accurate and complete model of user ...

2008

Dystemo: Distant Supervision Method for Multi-Category Emotion Recognition in Tweets

Pearl Pu Faltings, Valentina Sintsova

Emotion recognition in text has become an important research objective. It involves building classifiers capable of detecting human emotions for a specific application, for example, analyzing reactions to product launches, monitoring emotions at sports eve ...

Assoc Computing Machinery2016

Agile preference models based on soft constraints

Boi Faltings, Pearl Pu Faltings, Jiyong Zhang

An accurate model of the user's preferences is a crucial element of most decision support systems. It is often assumed that users have a well-defined and stable set of preferences that can be elicited through a set of questions. However, recent research ha ...

American Association for Artificial Intelligence, Menlo Park, CA 94025-3496, United States2005

A Cross-Cultural User Evaluation of Product Recommender Interfaces

Pearl Pu Faltings, Li Chen

We present a cross-cultural user evaluation of an organization-based product recommender interface, by comparing it with the traditional list view. The results show that it performed significantly better, for all study participants, in improving on their c ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2008

Evaluating recommender systems from the user's perspective: survey of the state of the art

Pearl Pu Faltings, Li Chen, Rong Hu

A recommender system is a Web technology that proactively suggests items of interest to users based on their objective behavior or explicitly stated preferences. Evaluations of recommender systems (RS) have traditionally focused on the performance of algor ...

Springer Netherlands2012

A User-Centric Evaluation Framework for Recommender Systems

Pearl Pu Faltings, Li Chen, Rong Hu

This research was motivated by our interest in understanding the criteria for measuring the success of a recommender system from users’ point view. Even though existing work has suggested a wide range of criteria, the consistency and validity of the combin ...

2011

Uncertainty and Surprisal Jointly Deliver the Punchline: Exploiting Incongruity-Based Features for Humor Recognition

Pearl Pu Faltings, Yubo Xie

Humor recognition has been widely studied as a text classification problem using data-driven approaches. However, most existing work does not examine the actual joke mechanism to understand humor. We break down any joke into two distinct components: the se ...

ASSOC COMPUTATIONAL LINGUISTICS-ACL2021

Hybrid critiquing-based recommender systems

Pearl Pu Faltings, Li Chen

We propose a novel critiquing-based recommender interface, the hybrid critiquing interface that integrates the user self-motivated critiquing facility to compensate for the limitations of system-proposed critiques. The results from our user study show that ...

Association for Computing Machinery, New York, NY 10036-5701, United States2007

How Users Perceive and Appraise Personalized Recommendations

Pearl Pu Faltings, Li Chen, Nicolas Jones

Traditional websites have long relied on users revealing their preferences explicitly through direct manipulation interfaces. However recent recommender systems have gone as far as using implicit feedback indicators to understand users' interests. More tha ...

Springer2009

Trust building with explanation interfaces

Pearl Pu Faltings

Based on our recent work on the development of a trust model for recommender agents and a qualitative survey, we explore the potential of building users' trust with explanation interfaces. We present the major results from the survey, which provided a road ...

ACM2006

A Visual Interface for Critiquing-based Recommender Systems

Pearl Pu Faltings, Jiyong Zhang, Nicolas Jones

Critiquing-based recommender systems provide an efficient way for users to navigate through complex product spaces even if they are not familiar with the domain details in e-commerce environments. While recent research has mainly concentrated on methods fo ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2008

Representative explanations for over-constrained problems

Boi Faltings, Pearl Pu Faltings

In many interactive decision making scenarios there is often no solution that satisfies all of the user's preferences. The decision process can be helped by providing explanations. Relaxations show sets of consistent preferences and, thus, indicate which p ...

American Association for Artificial Intelligence, Menlo Park, CA 94025-3496, United States2007

Preference-based search with adaptive recommendations

Boi Faltings, Pearl Pu Faltings, Paolo Viappiani

Conversational recommenders can help users find their most preferred item among a large range of options, a task that we call preference-based search. ...

2008

Agile decision agent for service-oriented e-commerce systems

Boi Faltings, Pearl Pu Faltings

In a service-oriented e-commerce environment, it is a crucial task to help consumers choose desired products efficiently from a huge amount of dynamically configured product candidates. Decision agents can be designed to provide interactive decision aids f ...

IEEE Comput. Soc2006

A survey of consumer health question answering systems

Pearl Pu Faltings, Kalpani Anuradha Welivita

Consumers are increasingly using the web to find answers to their health-related queries. Unfortunately, they often struggle with formulating the questions, further compounded by the burden of having to traverse long documents returned by the search engine ...

Amer Assoc Artificial Intell2023

Preface to the special issue on user interfaces for recommender systems

Pearl Pu Faltings

2012

EHR: a Sensing Technology Readiness Model for Lifestyle Changes

Zerrin Yumak, Pearl Pu Faltings, Yu Chen

Interest in developing user-centered sensing technologies for personalized behavior change has gained significant momentum. However, very little research work has been done to understand issues relative to user readiness and adoption of the sensing technol ...

Springer2017

The art of dish: What makes cooked food visually appealing?

Pearl Pu Faltings

People's liking for cooked food is affected by a number of factors, including appearance, taste, smell, and eating habits. Among all these factors, appearance plays a vital role, especially in some situations where only the appearance of food is available ...

2025