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Stochastic gradient descent (SGD) is a powerful optimization technique that is particularly useful in online learning scenarios. Its convergence analysis is relatively well understood under the assumption that the data samples are…

机器学习 · 计算机科学 2024-10-03 Ethan Che , Jing Dong , Xin T. Tong

In this work, we introduce back-training, an alternative to self-training for unsupervised domain adaptation (UDA) from source to target domain. While self-training generates synthetic training data where natural inputs are aligned with…

计算与语言 · 计算机科学 2021-09-10 Devang Kulshreshtha , Robert Belfer , Iulian Vlad Serban , Siva Reddy

Neural network-based dialog models often lack robustness to anomalous, out-of-domain (OOD) user input which leads to unexpected dialog behavior and thus considerably limits such models' usage in mission-critical production environments. The…

计算与语言 · 计算机科学 2018-11-30 Igor Shalyminov , Sungjin Lee

While recent models have achieved human-level scores on many NLP datasets, we observe that they are considerably sensitive to small changes in input. As an alternative to the standard approach of addressing this issue by constructing…

计算与语言 · 计算机科学 2020-10-07 Daniel Khashabi , Tushar Khot , Ashish Sabharwal

In this paper, we aim to adapt a model at test-time using a few unlabeled data to address distribution shifts. To tackle the challenges of extracting domain knowledge from a limited amount of data, it is crucial to utilize correlated…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Zhixiang Chi , Li Gu , Tao Zhong , Huan Liu , Yuanhao Yu , Konstantinos N Plataniotis , Yang Wang

Large pre-trained language models (LPLM) have shown spectacular success when fine-tuned on downstream supervised tasks. Yet, it is known that their performance can drastically drop when there is a distribution shift between the data used…

计算与语言 · 计算机科学 2022-11-04 Kostadin Cvejoski , Ramsés J. Sánchez , César Ojeda

In domain adaptation, there are two popular paradigms: Unsupervised Domain Adaptation (UDA), which aligns distributions using source data, and Source-Free Domain Adaptation (SFDA), which leverages pre-trained source models without accessing…

机器学习 · 计算机科学 2024-11-26 Fan Wang , Zhongyi Han , Xingbo Liu , Xin Gao , Yilong Yin

A majority of recent work in AI assesses models' generalization capabilities through the lens of performance on out-of-distribution (OOD) datasets. Despite their practicality, such evaluations build upon a strong assumption: that OOD…

计算与语言 · 计算机科学 2025-08-27 Michal Štefánik , Timothee Mickus , Marek Kadlčík , Michal Spiegel , Josef Kuchař

How does the natural evolution of context paragraphs affect question answering in generative Large Language Models (LLMs)? To investigate this, we propose a framework for curating naturally evolved, human-edited variants of reading passages…

计算与语言 · 计算机科学 2025-09-03 Yulong Wu , Viktor Schlegel , Riza Batista-Navarro

Information seeking users often pose questions with false presuppositions, especially when asking about unfamiliar topics. Most existing question answering (QA) datasets, in contrast, assume all questions have well defined answers. We…

计算与语言 · 计算机科学 2022-12-01 Xinyan Velocity Yu , Sewon Min , Luke Zettlemoyer , Hannaneh Hajishirzi

Previous studies that used data from Stack Overflow to develop predictive models often employed limited benchmarks of 3-5 models or adopted arbitrary selection methods. Despite being insightful, their limited scope suggests the need to…

软件工程 · 计算机科学 2025-06-24 Elijah Zolduoarrati , Sherlock A. Licorish , Nigel Stanger

With the exponential growth of online marketplaces and user-generated content therein, aspect-based sentiment analysis has become more important than ever. In this work, we critically review a representative sample of the models published…

计算与语言 · 计算机科学 2021-05-12 Rajdeep Mukherjee , Shreyas Shetty , Subrata Chattopadhyay , Subhadeep Maji , Samik Datta , Pawan Goyal

In natural phenomena, data distributions often deviate from normality. One can think of cataclysms as a self-explanatory example: events that occur almost never, and at the same time are many standard deviations away from the common…

机器学习 · 计算机科学 2022-12-16 Nuno Costa , Nuno Moniz

Transformer-based architectures achieve state-of-the-art performance across a wide range of tasks in natural language processing, computer vision, and speech processing. However, their immense capacity often leads to overfitting, especially…

计算机视觉与模式识别 · 计算机科学 2025-09-22 Mirza Samad Ahmed Baig , Syeda Anshrah Gillani , Abdul Akbar Khan , Shahid Munir Shah , Muhammad Omer Khan

Dropout is used to avoid overfitting by randomly dropping units from the neural networks during training. Inspired by dropout, this paper presents GI-Dropout, a novel dropout method integrating with global information to improve neural…

计算与语言 · 计算机科学 2018-10-11 Hengru Xu , Shen Li , Renfen Hu , Si Li , Sheng Gao

Answering questions is a primary goal of many conversational systems or search products. While most current systems have focused on answering questions against structured databases or curated knowledge graphs, on-line community forums or…

计算与语言 · 计算机科学 2019-11-11 Alexandre Rochette , Yadollah Yaghoobzadeh , Timothy J. Hazen

Despite its widespread adoption, Adam's advantage over Stochastic Gradient Descent (SGD) lacks a comprehensive theoretical explanation. This paper investigates Adam's sensitivity to rotations of the parameter space. We observe that Adam's…

In fact-checking, structure and phrasing of claims critically influence a model's ability to predict verdicts accurately. Social media content in particular rarely serves as optimal input for verification systems, which necessitates…

计算与语言 · 计算机科学 2024-12-17 Amelie Wührl , Roman Klinger

While progress has been made on the visual question answering leaderboards, models often utilize spurious correlations and priors in datasets under the i.i.d. setting. As such, evaluation on out-of-distribution (OOD) test samples has…

计算机视觉与模式识别 · 计算机科学 2020-10-19 Tejas Gokhale , Pratyay Banerjee , Chitta Baral , Yezhou Yang

Stanford typed dependencies are a widely desired representation of natural language sentences, but parsing is one of the major computational bottlenecks in text analysis systems. In light of the evolving definition of the Stanford…

计算与语言 · 计算机科学 2014-04-17 Lingpeng Kong , Noah A. Smith