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Diffusion Probabilistic Models (DPMs) have demonstrated substantial promise in image generation tasks but heavily rely on the availability of large amounts of training data. Previous works, like GANs, have tackled the limited data problem…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Xiyu Wang , Baijiong Lin , Daochang Liu , Chang Xu

Existing conversational systems are mostly agent-centric, which assumes the user utterances would closely follow the system ontology (for NLU or dialogue state tracking). However, in real-world scenarios, it is highly desirable that the…

计算与语言 · 计算机科学 2021-09-10 Zhiyu Chen , Honglei Liu , Hu Xu , Seungwhan Moon , Hao Zhou , Bing Liu

Many localized languages struggle to reap the benefits of recent advancements in character recognition systems due to the lack of substantial amount of labeled training data. This is due to the difficulty in generating large amounts of…

计算机视觉与模式识别 · 计算机科学 2020-08-10 Vinoj Jayasundara , Sandaru Jayasekara , Hirunima Jayasekara , Jathushan Rajasegaran , Suranga Seneviratne , Ranga Rodrigo

Generative AI has significantly changed industries by enabling text-driven image generation, yet challenges remain in achieving high-resolution outputs that align with fine-grained user preferences. Consequently, multi-round interactions…

计算机视觉与模式识别 · 计算机科学 2025-04-28 Kun Li , Jianhui Wang , Yangfan He , Xinyuan Song , Ruoyu Wang , Hongyang He , Wenxin Zhang , Jiaqi Chen , Keqin Li , Sida Li , Miao Zhang , Tianyu Shi , Xueqian Wang

This work introduces Focused-Variation Network (FVN), a novel model to control language generation. The main problems in previous controlled language generation models range from the difficulty of generating text according to the given…

计算与语言 · 计算机科学 2020-09-28 Lei Shu , Alexandros Papangelis , Yi-Chia Wang , Gokhan Tur , Hu Xu , Zhaleh Feizollahi , Bing Liu , Piero Molino

Numerous recent techniques for text style transfer characterize their approaches as variants of reinforcement learning and preference optimization. In this work, we consider the relationship between these approaches and a class of…

计算与语言 · 计算机科学 2024-07-30 Shuai Liu , Jonathan May

Current alignment pipelines presume a single, universal notion of desirable behavior. However, human preferences often diverge across users, contexts, and cultures. As a result, disagreement collapses into the majority signal and minority…

机器学习 · 计算机科学 2025-06-10 Daniel Halpern , Evi Micha , Ariel D. Procaccia , Itai Shapira

Much research in recent years has focused on automatic article commenting. However, few of previous studies focus on the controllable generation of comments. Besides, they tend to generate dull and commonplace comments, which further limits…

计算与语言 · 计算机科学 2021-07-27 Linhao Zhang , Houfeng Wang

While developments in machine learning led to impressive performance gains on big data, many human subjects data are, in actuality, small and sparsely labeled. Existing methods applied to such data often do not easily generalize to…

机器学习 · 计算机科学 2023-04-04 Julie Jiang , Kristina Lerman , Emilio Ferrara

We develop a learning-based algorithm for the distributed formation control of networked multi-agent systems governed by unknown, nonlinear dynamics. Most existing algorithms either assume certain parametric forms for the unknown dynamic…

系统与控制 · 电气工程与系统科学 2022-07-19 Christos K. Verginis , Zhe Xu , Ufuk Topcu

Complex, multi-task problems have proven to be difficult to solve efficiently in a sparse-reward reinforcement learning setting. In order to be sample efficient, multi-task learning requires reuse and sharing of low-level policies. To…

机器学习 · 计算机科学 2021-09-28 Valerie Chen , Abhinav Gupta , Kenneth Marino

Few-shot learning benchmarks are critical for evaluating modern NLP techniques. It is possible, however, that benchmarks favor methods which easily make use of unlabeled text, because researchers can use unlabeled text from the test set to…

计算与语言 · 计算机科学 2024-10-03 Kush Dubey

Many text generation tasks naturally contain two steps: content selection and surface realization. Current neural encoder-decoder models conflate both steps into a black-box architecture. As a result, the content to be described in the text…

计算与语言 · 计算机科学 2019-09-11 Xiaoyu Shen , Jun Suzuki , Kentaro Inui , Hui Su , Dietrich Klakow , Satoshi Sekine

Paraphrase generation is a longstanding NLP task that has diverse applications for downstream NLP tasks. However, the effectiveness of existing efforts predominantly relies on large amounts of golden labeled data. Though unsupervised…

计算与语言 · 计算机科学 2021-09-28 Kaize Ding , Dingcheng Li , Alexander Hanbo Li , Xing Fan , Chenlei Guo , Yang Liu , Huan Liu

We explore unconstrained natural language feedback as a learning signal for artificial agents. Humans use rich and varied language to teach, yet most prior work on interactive learning from language assumes a particular form of input (e.g.,…

人工智能 · 计算机科学 2021-07-06 Theodore R. Sumers , Mark K. Ho , Robert D. Hawkins , Karthik Narasimhan , Thomas L. Griffiths

Generative models of language exhibit impressive capabilities but still place non-negligible probability mass over undesirable outputs. In this work, we address the task of updating a model to avoid unwanted outputs while minimally changing…

计算与语言 · 计算机科学 2024-06-21 Lily H. Zhang , Rajesh Ranganath , Arya Tafvizi

To align conditional text generation model outputs with desired behaviors, there has been an increasing focus on training the model using reinforcement learning (RL) with reward functions learned from human annotations. Under this…

计算与语言 · 计算机科学 2023-06-02 Richard Yuanzhe Pang , Vishakh Padmakumar , Thibault Sellam , Ankur P. Parikh , He He

Few-shot learning is a technique to learn a model with a very small amount of labeled training data by transferring knowledge from relevant tasks. In this paper, we propose a few-shot learning method for wearable sensor based human activity…

机器学习 · 计算机科学 2019-03-26 Siwei Feng , Marco F. Duarte

As language models have a greater impact on society, it is important to ensure they are aligned to a diverse range of perspectives and are able to reflect nuance in human values. However, the most popular training paradigms for modern…

计算与语言 · 计算机科学 2025-10-21 Chu Fei Luo , Samuel Dahan , Xiaodan Zhu

Integrating human expertise into machine learning systems often reduces the role of experts to labeling oracles, a paradigm that limits the amount of information exchanged and fails to capture the nuances of human judgment. We address this…

人机交互 · 计算机科学 2026-02-18 Belén Martín-Urcelay , Yoonsang Lee , Matthieu R. Bloch , Christopher J. Rozell