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Multi-task learning (MTL) aims at improving the generalization performance of several related tasks by leveraging useful information contained in them. However, in industrial scenarios, interpretability is always demanded, and the data of…

Machine Learning · Computer Science 2020-03-17 Ya-Lin Zhang , Longfei Li

Multi-task learning is a powerful method for solving several tasks jointly by learning robust representation. Optimization of the multi-task learning model is a more complex task than a single-task due to task conflict. Based on theoretical…

Machine Learning · Computer Science 2021-10-05 Andrey Filatov , Daniil Merkulov

Multi-task learning (MTL) optimizes several learning tasks simultaneously and leverages their shared information to improve generalization and the prediction of the model for each task. Auxiliary tasks can be added to the main task to…

Machine Learning · Computer Science 2020-07-03 Partoo Vafaeikia , Khashayar Namdar , Farzad Khalvati

In this work, we consider the problem of instance-wise dynamic network model selection for multi-task learning. To this end, we propose an efficient approach to exploit a compact but accurate model in a backbone architecture for each…

Computer Vision and Pattern Recognition · Computer Science 2019-09-12 Chanho Ahn , Eunwoo Kim , Songhwai Oh

A popular recent approach to answering open-domain questions is to first search for question-related passages and then apply reading comprehension models to extract answers. Existing methods usually extract answers from single passages…

Computation and Language · Computer Science 2018-04-27 Shuohang Wang , Mo Yu , Jing Jiang , Wei Zhang , Xiaoxiao Guo , Shiyu Chang , Zhiguo Wang , Tim Klinger , Gerald Tesauro , Murray Campbell

We propose a simple and efficient multi-hop dense retrieval approach for answering complex open-domain questions, which achieves state-of-the-art performance on two multi-hop datasets, HotpotQA and multi-evidence FEVER. Contrary to previous…

Retrieving proper domain knowledge from an external database lies at the heart of end-to-end task-oriented dialog systems to generate informative responses. Most existing systems blend knowledge retrieval with response generation and…

Computation and Language · Computer Science 2023-05-18 Fanqi Wan , Weizhou Shen , Ke Yang , Xiaojun Quan , Wei Bi

Multi-hop question answering (MHQA) enables accurate answers to complex queries by retrieving and reasoning over evidence dispersed across multiple documents. Existing MHQA approaches mainly rely on iterative retrieval-augmented generation,…

Artificial Intelligence · Computer Science 2026-04-21 Wei Chen , Lili Zhao , Zhi Zheng , HuiJun Hou , Tong Xu

Text-based Question Answering (QA) is a challenging task which aims at finding short concrete answers for users' questions. This line of research has been widely studied with information retrieval techniques and has received increasing…

Information Retrieval · Computer Science 2020-05-28 Zahra Abbasiantaeb , Saeedeh Momtazi

Parallel deep learning architectures like fine-tuned BERT and MT-DNN, have quickly become the state of the art, bypassing previous deep and shallow learning methods by a large margin. More recently, pre-trained models from large related…

Information Retrieval · Computer Science 2019-07-04 Hemant Pugaliya , Karan Saxena , Shefali Garg , Sheetal Shalini , Prashant Gupta , Eric Nyberg , Teruko Mitamura

Deep search agents have proven effective in enhancing LLMs by retrieving external knowledge during multi-step reasoning. However, existing methods often generate a single query for retrieval at each reasoning step, limiting information…

Artificial Intelligence · Computer Science 2026-05-14 Jiabei Liu , Wenyu Mao , Junfei Tan , Chunxu Shen , Lingling Yi , Jiancan Wu , Xiang Wang

Question-answering (QA) that comes naturally to humans is a critical component in seamless human-computer interaction. It has emerged as one of the most convenient and natural methods to interact with the web and is especially desirable in…

Computation and Language · Computer Science 2022-11-15 Deepak Gupta

As part of an ongoing investigation of student learning in upper-division quantum mechanics, we needed a high-quality conceptual assessment instrument for comparing outcomes of different curricular approaches. The 14 item open-ended Quantum…

Physics Education · Physics 2013-08-21 Homeyra Sadaghiani , John Miller , Steven Pollock , Daniel Rehn

A crucial challenge in reinforcement learning is to reduce the number of interactions with the environment that an agent requires to master a given task. Transfer learning proposes to address this issue by re-using knowledge from previously…

Machine Learning · Computer Science 2023-04-28 Remo Sasso , Matthia Sabatelli , Marco A. Wiering

Multi-task learning has recently become a very active field in deep learning research. In contrast to learning a single task in isolation, multiple tasks are learned at the same time, thereby utilizing the training signal of related tasks…

Computation and Language · Computer Science 2019-04-24 Tobias Kahse

In this paper, we present a coarse to fine question answering (CFQA) system based on reinforcement learning which can efficiently processes documents with different lengths by choosing appropriate actions. The system is designed using an…

Computation and Language · Computer Science 2021-06-02 Yu Wang , Hongxia Jin

A fundamental problem in robotic perception is matching identical objects or data, with applications such as loop closure detection, place recognition, object tracking, and map fusion. While the problem becomes considerably more challenging…

Robotics · Computer Science 2021-12-01 Parker C. Lusk , Ronak Roy , Kaveh Fathian , Jonathan P. How

Recent end-to-end task oriented dialog systems use memory architectures to incorporate external knowledge in their dialogs. Current work makes simplifying assumptions about the structure of the knowledge base, such as the use of triples to…

Computation and Language · Computer Science 2020-09-30 Revanth Reddy , Danish Contractor , Dinesh Raghu , Sachindra Joshi

Multi-task learning (MTL) has been widely used in recommender systems, wherein predicting each type of user feedback on items (e.g, click, purchase) are treated as individual tasks and jointly trained with a unified model. Our key…

Information Retrieval · Computer Science 2022-03-29 Chenxiao Yang , Junwei Pan , Xiaofeng Gao , Tingyu Jiang , Dapeng Liu , Guihai Chen

Large-scale digitization initiatives have unlocked massive collections of historical newspapers, yet effective computational access remains hindered by OCR corruption, multilingual orthographic variation, and temporal language drift. We…

Digital Libraries · Computer Science 2025-12-16 Anthony Mudet , Souhail Bakkali