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Pseudo relevance feedback (PRF) automatically performs query expansion based on top-retrieved documents to better represent the user's information need so as to improve the search results. Previous PRF methods mainly select expansion terms…

Information Retrieval · Computer Science 2021-11-17 Handong Ma , Jiawei Hou , Chenxu Zhu , Weinan Zhang , Ruiming Tang , Jincai Lai , Jieming Zhu , Xiuqiang He , Yong Yu

Query expansion with pseudo-relevance feedback (PRF) is a powerful approach to enhance the effectiveness in information retrieval. Recently, with the rapid advance of deep learning techniques, neural text generation has achieved promising…

Information Retrieval · Computer Science 2021-08-16 Minghui Huang , Dong Wang , Shuang Liu , Meizhen Ding

Prediction in a small-sized sample with a large number of covariates, the "small n, large p" problem, is challenging. This setting is encountered in multiple applications, such as precision medicine, where obtaining additional samples can…

Artificial Intelligence · Computer Science 2017-07-14 Pedram Daee , Tomi Peltola , Marta Soare , Samuel Kaski

This paper presents a novel task using real user data obtained in human-machine conversation. The task concerns with denotation extraction from answer hints collected interactively in a dialogue. The task is motivated by the need for large…

Computation and Language · Computer Science 2018-01-10 Miroslav Vodolán , Filip Jurčíček

Concept discovery is one of the open problems in the interpretability literature that is important for bridging the gap between non-deep learning experts and model end-users. Among current formulations, concepts defines them by as a…

Machine Learning · Computer Science 2022-02-11 Adrianna Janik , Kris Sankaran

The emergence of large-scale pretrained language models has posed unprecedented challenges in deriving explanations of why the model has made some predictions. Stemmed from the compositional nature of languages, spurious correlations have…

Computation and Language · Computer Science 2023-05-04 Ruochen Zhao , Shafiq Joty , Yongjie Wang , Tan Wang

Despite recent progress on conversational systems, they still do not perform smoothly and coherently when faced with ambiguous requests. When questions are unclear, conversational systems should have the ability to ask clarifying questions,…

Information Retrieval · Computer Science 2022-08-10 Negar Arabzadeh , Mahsa Seifikar , Charles L. A. Clarke

This paper proposes an incremental method that can be used by an intelligent system to learn better descriptions of a thematic context. The method starts with a small number of terms selected from a simple description of the topic under…

Information Retrieval · Computer Science 2010-04-28 Carlos M. Lorenzetti , Ana G. Maguitman

After data selection, pre-processing, transformation, and feature extraction, knowledge extraction is not the final step in a data mining process. It is then necessary to understand this knowledge in order to apply it efficiently and…

Machine Learning · Computer Science 2016-05-23 Dominik Fisch , Christian Gruhl , Edgar Kalkowski , Bernhard Sick , Seppo J. Ovaska

Algorithmic Recourse aims to provide actionable explanations, or recourse plans, to overturn potentially unfavourable decisions taken by automated machine learning models. In this paper, we propose an interaction paradigm based on a guided…

Human-Computer Interaction · Computer Science 2024-07-22 Seyedehdelaram Esfahani , Giovanni De Toni , Bruno Lepri , Andrea Passerini , Katya Tentori , Massimo Zancanaro

Active perception approaches select future viewpoints by using some estimate of the information gain. An inaccurate estimate can be detrimental in critical situations, e.g., locating a person in distress. However the true information gained…

Robotics · Computer Science 2026-04-17 Siming He , Yuezhan Tao , Igor Spasojevic , Vijay Kumar , Pratik Chaudhari

As a technically challenging topic, visual storytelling aims at generating an imaginary and coherent story with narrative multi-sentences from a group of relevant images. Existing methods often generate direct and rigid descriptions of…

Computer Vision and Pattern Recognition · Computer Science 2022-03-11 Tengpeng Li , Hanli Wang , Bin He , Chang Wen Chen

Data and insights discovery is critical for decision-making in modern organizations. We present Genicious, an LLM-aided interface that enables users to interact with tabular datasets and ask complex queries in natural language. By…

Information Retrieval · Computer Science 2025-03-18 Vineet Kumar , Ronald Tony , Darshita Rathore , Vipasha Rana , Bhuvanesh Mandora , Kanishka , Chetna Bansal , Anindya Moitra

Unsupervised approaches to extractive summarization usually rely on a notion of sentence importance defined by the semantic similarity between a sentence and the document. We propose new metrics of relevance and redundancy using pointwise…

Computation and Language · Computer Science 2021-03-24 Vishakh Padmakumar , He He

Various domain users are increasingly leveraging real-time social media data to gain rapid situational awareness. However, due to the high noise in the deluge of data, effectively determining semantically relevant information can be…

Social and Information Networks · Computer Science 2019-10-09 Luke S. Snyder , Yi-Shan Lin , Morteza Karimzadeh , Dan Goldwasser , David S. Ebert

Real-world recommendation systems commonly offer diverse content scenarios for users to interact with. Considering the enormous number of users in industrial platforms, it is infeasible to utilize a single unified recommendation model to…

Information Retrieval · Computer Science 2024-12-10 Chonggang Song , Chunxu Shen , Hao Gu , Yaoming Wu , Lingling Yi , Jie Wen , Chuan Chen

Providing emotional support through dialogue systems is becoming increasingly important in today's world, as it can support both mental health and social interactions in many conversation scenarios. Previous works have shown that using…

Computation and Language · Computer Science 2024-03-08 Seunghee Han , Se Jin Park , Chae Won Kim , Yong Man Ro

Recent advancements in Natural Language Processing (NLP) have led to the development of NLP-based recommender systems that have shown superior performance. However, current models commonly treat items as mere IDs and adopt discriminative…

Information Retrieval · Computer Science 2023-04-11 Jinming Li , Wentao Zhang , Tian Wang , Guanglei Xiong , Alan Lu , Gerard Medioni

We propose a novel approach to program synthesis, focusing on synthesizing database queries. At a high level, our proposed algorithm takes as input a sketch with soft constraints encoding user intent, and then iteratively interacts with the…

Programming Languages · Computer Science 2021-10-12 Osbert Bastani , Xin Zhang , Armando Solar-Lezama

For visual content generation, discrepancies between user intentions and the generated content have been a longstanding problem. This discrepancy arises from two main factors. First, user intentions are inherently complex, with subtle…

Computer Vision and Pattern Recognition · Computer Science 2024-05-22 Yi Cheng , Ziwei Xu , Dongyun Lin , Harry Cheng , Yongkang Wong , Ying Sun , Joo Hwee Lim , Mohan Kankanhalli