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Various natural language processing tasks are structured prediction problems where outputs are constructed with multiple interdependent decisions. Past work has shown that domain knowledge, framed as constraints over the output space, can…

计算与语言 · 计算机科学 2020-06-03 Xingyuan Pan , Maitrey Mehta , Vivek Srikumar

Reinforcement Learning (RL) has emerged as a powerful paradigm in Artificial Intelligence (AI), enabling agents to learn optimal behaviors through interactions with their environments. Drawing from the foundations of trial and error, RL…

人工智能 · 计算机科学 2025-02-04 Majid Ghasemi , Amir Hossein Moosavi , Dariush Ebrahimi

Deep reinforcement learning algorithms are usually impeded by sampling inefficiency, heavily depending on multiple interactions with the environment to acquire accurate decision-making capabilities. In contrast, humans rely on their…

机器学习 · 计算机科学 2024-03-07 Yonggang Jin , Chenxu Wang , Tianyu Zheng , Liuyu Xiang , Yaodong Yang , Junge Zhang , Jie Fu , Zhaofeng He

Reinforcement learning is a framework for learning to act sequentially in an unknown environment. We propose a natural approach for modeling policy structure in policy gradients. The key idea is to optimize for a subset of future rewards:…

机器学习 · 计算机科学 2026-03-09 Puneet Mathur , Branislav Kveton , Subhojyoti Mukherjee , Viet Dac Lai

The broad set of deep generative models (DGMs) has achieved remarkable advances. However, it is often difficult to incorporate rich structured domain knowledge with the end-to-end DGMs. Posterior regularization (PR) offers a principled…

机器学习 · 计算机科学 2018-11-21 Zhiting Hu , Zichao Yang , Ruslan Salakhutdinov , Xiaodan Liang , Lianhui Qin , Haoye Dong , Eric Xing

We present a method for enabling Reinforcement Learning of motor control policies for complex skills such as dexterous manipulation. We posit that a key difficulty for training such policies is the difficulty of exploring the problem state…

Learning robotic manipulation tasks using reinforcement learning with sparse rewards is currently impractical due to the outrageous data requirements. Many practical tasks require manipulation of multiple objects, and the complexity of such…

机器人学 · 计算机科学 2019-12-24 Richard Li , Allan Jabri , Trevor Darrell , Pulkit Agrawal

Vast amounts of text on the Web are unstructured and ungrammatical, such as classified ads, auction listings, forum postings, etc. We call such text "posts." Despite their inconsistent structure and lack of grammar, posts are full of useful…

计算与语言 · 计算机科学 2014-01-17 Matthew Michelson , Craig A. Knoblock

Disentanglement is a difficult property to enforce in neural representations. This might be due, in part, to a formalization of the disentanglement problem that focuses too heavily on separating relevant factors of variation of the data in…

机器学习 · 计算机科学 2022-05-23 Andrea Valenti , Davide Bacciu

Generating keyphrases that summarize the main points of a document is a fundamental task in natural language processing. Although existing generative models are capable of predicting multiple keyphrases for an input document as well as…

计算与语言 · 计算机科学 2019-06-11 Hou Pong Chan , Wang Chen , Lu Wang , Irwin King

Computer-aided design of molecules has the potential to disrupt the field of drug and material discovery. Machine learning, and deep learning, in particular, have been topics where the field has been developing at a rapid pace.…

机器学习 · 计算机科学 2022-08-08 Luca A. Thiede , Mario Krenn , AkshatKumar Nigam , Alan Aspuru-Guzik

Discovering functional crystalline materials entails navigating an immense combinatorial design space. While recent advances in generative artificial intelligence have enabled the sampling of chemically plausible compositions and…

机器学习 · 计算机科学 2025-11-11 Hyunsoo Park , Aron Walsh

Reinforcement learning is a general method for learning in sequential settings, but it can often be difficult to specify a good reward function when the task is complex. In these cases, preference feedback or expert demonstrations can be…

机器学习 · 计算机科学 2025-08-20 Jason R Brown , Carl Henrik Ek , Robert D Mullins

Reinforcement learning (RL) has emerged as a powerful post-training paradigm for enhancing the reasoning capabilities of large language models (LLMs). However, reinforcement learning for LLMs faces substantial data scarcity challenges,…

Recommender systems can mitigate the information overload problem by suggesting users' personalized items. In real-world recommendations such as e-commerce, a typical interaction between the system and its users is -- users are recommended…

信息检索 · 计算机科学 2018-08-13 Xiangyu Zhao , Long Xia , Liang Zhang , Zhuoye Ding , Dawei Yin , Jiliang Tang

The desire to make applications and machines more intelligent and the aspiration to enable their operation without human interaction have been driving innovations in neural networks, deep learning, and other machine learning techniques.…

机器学习 · 计算机科学 2022-09-30 Fadi AlMahamid , Katarina Grolinger

Selective rationalization aims to produce decisions along with rationales (e.g., text highlights or word alignments between two sentences). Commonly, rationales are modeled as stochastic binary masks, requiring sampling-based gradient…

计算与语言 · 计算机科学 2021-09-13 Nuno Miguel Guerreiro , André F. T. Martins

Autoencoder recommenders have recently shown state-of-the-art performance in the recommendation task due to their ability to model non-linear item relationships effectively. However, existing autoencoder recommenders use fully-connected…

信息检索 · 计算机科学 2020-08-19 Farhan Khawar , Leonard Kin Man Poon , Nevin Lianwen Zhang

Cross-situational word learning is based on the notion that a learner can determine the referent of a word by finding something in common across many observed uses of that word. Here we propose an adaptive learning algorithm that contains a…

神经元与认知 · 定量生物学 2013-11-20 Paulo F. C. Tilles , Jose F. Fontanari

The working mechanisms of complex natural systems tend to abide by concise and profound partial differential equations (PDEs). Methods that directly mine equations from data are called PDE discovery, which reveals consistent physical laws…

机器学习 · 计算机科学 2023-03-17 Mengge Du , Yuntian Chen , Dongxiao Zhang