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We address the task of sentence retrieval for open-ended dialogues. The goal is to retrieve sentences from a document corpus that contain information useful for generating the next turn in a given dialogue. Prior work on dialogue-based…

Information Retrieval · Computer Science 2022-05-25 Itay Harel , Hagai Taitelbaum , Idan Szpektor , Oren Kurland

We present a context-aware neural ranking model to exploit users' on-task search activities and enhance retrieval performance. In particular, a two-level hierarchical recurrent neural network is introduced to learn search context…

Information Retrieval · Computer Science 2019-06-07 Wasi Uddin Ahmad , Kai-Wei Chang , Hongning Wang

Response generation is one of the critical components in task-oriented dialog systems. Existing studies have shown that large pre-trained language models can be adapted to this task. The typical paradigm of adapting such extremely large…

Computation and Language · Computer Science 2023-02-14 Sandesh Swamy , Narges Tabari , Chacha Chen , Rashmi Gangadharaiah

Retrieval Augmented Generation (RAG) has emerged as a widely adopted approach to mitigate the limitations of large language models (LLMs) in answering domain-specific questions. Previous research has predominantly focused on improving the…

Machine Learning · Computer Science 2025-01-07 Mohammad Hassan Heydari , Arshia Hemmat , Erfan Naman , Afsaneh Fatemi

Long-context language models (LCLMs) have exhibited impressive capabilities in long-context understanding tasks. Among these, long-context referencing -- a crucial task that requires LCLMs to attribute items of interest to specific parts of…

Computation and Language · Computer Science 2025-08-05 Junjie Wu , Gefei Gu , Yanan Zheng , Dit-Yan Yeung , Arman Cohan

Although proper handling of discourse significantly contributes to the quality of machine translation (MT), these improvements are not adequately measured in common translation quality metrics. Recent works in context-aware MT attempt to…

Computation and Language · Computer Science 2023-06-28 Patrick Fernandes , Kayo Yin , Emmy Liu , André F. T. Martins , Graham Neubig

Multimodal representation learning has been largely driven by contrastive models such as CLIP, which learn a shared embedding space by aligning paired image-text samples. While effective for general-purpose representation learning, such…

Machine Learning · Computer Science 2026-05-12 Yang Qiao , Yuntong Hu , Bowen Zhu , Hasibul Haque , Liang Zhao

Modeling human conversations is the essence for building satisfying chat-bots with multi-turn dialog ability. Conversation modeling will notably benefit from domain knowledge since the relationships between sentences can be clarified due to…

Computation and Language · Computer Science 2017-02-07 Zhen Xu , Bingquan Liu , Baoxun Wang , Chengjie Sun , Xiaolong Wang

Large Language Models (LLMs) have demonstrated exceptional abilities across a broad range of language-related tasks, including generating solutions to complex reasoning problems. An effective technique to enhance LLM performance is…

Computation and Language · Computer Science 2024-12-25 Shuzhang Cai , Twumasi Mensah-Boateng , Xander Kuksov , Jing Yuan , Shaojie Tang

Multiturn dialogue models aim to generate human-like responses by leveraging conversational context, consisting of utterances from previous exchanges. Existing methods often neglect the interactions between these utterances or treat all of…

Computation and Language · Computer Science 2025-04-15 Akanksha Mehndiratta , Krishna Asawa

Conversational recommender systems have attracted immense attention recently. The most recent approaches rely on neural models trained on recorded dialogs between humans, implementing an end-to-end learning process. These systems are…

Information Retrieval · Computer Science 2022-05-26 Ahtsham Manzoor , Dietmar Jannach

We measure the performance of in-context learning as a function of task novelty and difficulty for open and closed questions. For that purpose, we created a novel benchmark consisting of hard scientific questions, each paired with a context…

Computation and Language · Computer Science 2024-07-03 Xiang Li , Haoran Tang , Siyu Chen , Ziwei Wang , Ryan Chen , Marcin Abram

Recent work in neural machine translation has demonstrated both the necessity and feasibility of using inter-sentential context -- context from sentences other than those currently being translated. However, while many current methods…

Computation and Language · Computer Science 2021-06-03 Patrick Fernandes , Kayo Yin , Graham Neubig , André F. T. Martins

Built upon the existing analysis of retrieval heads in large language models, we propose an alternative reranking framework that trains models to estimate passage-query relevance using the attention scores of selected heads. This approach…

Computation and Language · Computer Science 2026-03-11 Yuqing Li , Jiangnan Li , Mo Yu , Guoxuan Ding , Zheng Lin , Weiping Wang , Jie Zhou

Deep learning models such as convolutional neural networks and recurrent networks are widely applied in text classification. In spite of their great success, most deep learning models neglect the importance of modeling context information,…

Computation and Language · Computer Science 2019-06-05 Liuyu Xiang , Xiaoming Jin , Lan Yi , Guiguang Ding

Large language models (LLMs) are increasingly strong contenders in machine translation. In this work, we focus on document-level translation, where some words cannot be translated without context from outside the sentence. Specifically, we…

Computation and Language · Computer Science 2025-02-17 Wafaa Mohammed , Vlad Niculae

In this paper, we introduce a novel situation aware approach to improve a context based recommender system. To build situation aware user profiles, we rely on evidence issued from retrieval situations. A retrieval situation refers to the…

Information Retrieval · Computer Science 2014-04-01 Djallel Bouneffouf

The increasing demand for the web-based digital assistants has given a rapid rise in the interest of the Information Retrieval (IR) community towards the field of conversational question answering (ConvQA). However, one of the critical…

Computation and Language · Computer Science 2023-08-07 Munazza Zaib , Wei Emma Zhang , Quan Z. Sheng , Subhash Sagar , Adnan Mahmood , Yang Zhang

This paper focuses on the dynamic optimization of the Retrieval-Augmented Generation (RAG) architecture. It proposes a state-aware dynamic knowledge retrieval mechanism to enhance semantic understanding and knowledge scheduling efficiency…

Computation and Language · Computer Science 2025-04-29 Jacky He , Guiran Liu , Binrong Zhu , Hanlu Zhang , Hongye Zheng , Xiaokai Wang

Contextual information in search sessions is important for capturing users' search intents. Various approaches have been proposed to model user behavior sequences to improve document ranking in a session. Typically, training samples of…

Information Retrieval · Computer Science 2022-09-16 Yutao Zhu , Jian-Yun Nie , Yixuan Su , Haonan Chen , Xinyu Zhang , Zhicheng Dou