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We investigate the use of Reinforcement Learning for the optimal execution of meta-orders, where the objective is to execute incrementally large orders while minimizing implementation shortfall and market impact over an extended period of…

Trading and Market Microstructure · Quantitative Finance 2025-11-20 Tomas Espana , Yadh Hafsi , Fabrizio Lillo , Edoardo Vittori

Question answering (QA) system aims at retrieving precise information from a large collection of documents against a query. This paper describes the architecture of a Natural Language Question Answering (NLQA) system for a specific domain…

Computation and Language · Computer Science 2013-11-14 Athira P. M. , Sreeja M. , P. C. Reghu Raj

Reinforcement learning is a model-free optimal control method that optimizes a control policy through direct interaction with the environment. For reaching tasks that end in regulation, popular discrete-action methods are not well suited…

Robotics · Computer Science 2021-06-23 Wouter Caarls

Context: Recent research indicates that Web queries written by software developers are not very successful in retrieving relevant results, performing measurably worse compared to general purpose Web queries. Most approaches up to this point…

Software Engineering · Computer Science 2022-07-27 Mia Mohammad Imran , Kostadin Damevski

Question Answering (QA) has shown great success thanks to the availability of large-scale datasets and the effectiveness of neural models. Recent research works have attempted to extend these successes to the settings with few or no labeled…

Computation and Language · Computer Science 2020-05-07 Zhongli Li , Wenhui Wang , Li Dong , Furu Wei , Ke Xu

Agent-compiled knowledge bases provide persistent external knowledge for large language model (LLM) agents in open-ended, knowledge-intensive downstream tasks. Yet their quality is systematically limited by \emph{incompleteness},…

Computation and Language · Computer Science 2026-05-12 Haoyu Huang , Jiaxin Bai , Shujie Liu , Yang Wei , Hong Ting Tsang , Yisen Gao , Zhongwei Xie , Yufei Li , Yangqiu Song

Reinforcement learning refers to a group of methods from artificial intelligence where an agent performs learning through trial and error. It differs from supervised learning, since reinforcement learning requires no explicit labels;…

Machine Learning · Computer Science 2018-10-02 Nicolas Pröllochs , Stefan Feuerriegel

Closed-book question-answering (QA) is a challenging task that requires a model to directly answer questions without access to external knowledge. It has been shown that directly fine-tuning pre-trained language models with (question,…

Computation and Language · Computer Science 2021-01-05 Qinyuan Ye , Belinda Z. Li , Sinong Wang , Benjamin Bolte , Hao Ma , Wen-tau Yih , Xiang Ren , Madian Khabsa

In this paper, we propose a novel Knowledge-based Embodied Question Answering (K-EQA) task, in which the agent intelligently explores the environment to answer various questions with the knowledge. Different from explicitly specifying the…

Robotics · Computer Science 2021-09-17 Sinan Tan , Mengmeng Ge , Di Guo , Huaping Liu , Fuchun Sun

Question answering (QA), giving correct answers to questions, is a popular task, but we test reverse question answering (RQA): for an input answer, give a question with that answer. Past work tests QA and RQA separately, but we test them…

Computation and Language · Computer Science 2025-02-13 Nishant Balepur , Feng Gu , Abhilasha Ravichander , Shi Feng , Jordan Boyd-Graber , Rachel Rudinger

Reinforcement learning defines the problem facing agents that learn to make good decisions through action and observation alone. To be effective problem solvers, such agents must efficiently explore vast worlds, assign credit from delayed…

Machine Learning · Computer Science 2022-03-02 David Abel

Question answering (QA) in English has been widely explored, but multilingual datasets are relatively new, with several methods attempting to bridge the gap between high- and low-resourced languages using data augmentation through…

Computation and Language · Computer Science 2021-06-01 Arnab Debnath , Navid Rajabi , Fardina Fathmiul Alam , Antonios Anastasopoulos

Training a task-completion dialogue agent via reinforcement learning (RL) is costly because it requires many interactions with real users. One common alternative is to use a user simulator. However, a user simulator usually lacks the…

Computation and Language · Computer Science 2018-05-24 Baolin Peng , Xiujun Li , Jianfeng Gao , Jingjing Liu , Kam-Fai Wong , Shang-Yu Su

Event Extraction (EE) is an essential information extraction task that aims to extract event-related information from unstructured texts. The paradigm of this task has shifted from conventional classification-based methods to more…

Computation and Language · Computer Science 2024-07-23 Zijin Hong , Jian Liu

Long-form question answering (LFQA) poses a challenge as it involves generating detailed answers in the form of paragraphs, which go beyond simple yes/no responses or short factual answers. While existing QA models excel in questions with…

Computation and Language · Computer Science 2023-11-17 Pritom Saha Akash , Kashob Kumar Roy , Lucian Popa , Kevin Chen-Chuan Chang

In this article we present the motivation and the core thesis towards the implementation of a Quantum Knowledge Seeking Agent (QKSA). QKSA is a general reinforcement learning agent that can be used to model classical and quantum dynamics.…

Quantum Physics · Physics 2021-07-06 Aritra Sarkar

We propose a reinforcement-learning algorithm to tackle the challenge of reconstructing phylogenetic trees. The search for the tree that best describes the data is algorithmically challenging, thus all current algorithms for phylogeny…

Populations and Evolution · Quantitative Biology 2023-03-14 Dana Azouri , Oz Granit , Michael Alburquerque , Yishay Mansour , Tal Pupko , Itay Mayrose

Prompting-based conversational query reformulation has emerged as a powerful approach for conversational search, refining ambiguous user queries into standalone search queries. Best-of-N reformulation over the generated candidates via…

Computation and Language · Computer Science 2025-10-29 Yilong Lai , Jialong Wu , Zhenglin Wang , Deyu Zhou

The problem of reinforcement learning is considered where the environment or the model undergoes a change. An algorithm is proposed that an agent can apply in such a problem to achieve the optimal long-time discounted reward. The algorithm…

Systems and Control · Electrical Eng. & Systems 2023-04-25 Wuxia Chen , Taposh Banerjee , Jemin George , Carl Busart

Table Question Answering (TQA) aims to answer natural language questions about tabular data, often accompanied by additional contexts such as text passages. The task spans diverse settings, varying in table representation, question/answer…

Computation and Language · Computer Science 2026-04-21 Wei Zhou , Bolei Ma , Annemarie Friedrich , Mohsen Mesgar