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Interpretability is a pressing issue for decision systems. Many post hoc methods have been proposed to explain the predictions of a single machine learning model. However, business processes and decision systems are rarely centered around a…

机器学习 · 计算机科学 2023-03-22 Gianluigi Lopardo , Damien Garreau , Frederic Precioso , Greger Ottosson

We study nonconvex zeroth-order optimization (ZOO) in a high-dimensional space $\mathbb R^d$ for functions with approximately $s$-sparse gradients. To reduce the dependence on the dimensionality $d$ in the query complexity, high-dimensional…

机器学习 · 计算机科学 2025-01-30 Ruizhong Qiu , Hanghang Tong

Fine-grained classification involves dealing with datasets with larger number of classes with subtle differences between them. Guiding the model to focus on differentiating dimensions between these commonly confusable classes is key to…

计算与语言 · 计算机科学 2021-09-14 Varsha Suresh , Desmond C. Ong

With the constantly growing number of reviews and other sentiment-bearing texts on the Web, the demand for automatic sentiment analysis algorithms continues to expand. Aspect-based sentiment classification (ABSC) allows for the automatic…

计算与语言 · 计算机科学 2022-03-29 Gianni Brauwers , Flavius Frasincar

Graph-level anomaly detection (GLAD) has already gained significant importance and has become a popular field of study, attracting considerable attention across numerous downstream works. The core focus of this domain is to capture and…

机器学习 · 计算机科学 2024-07-17 Zitong Wang , Xuexiong Luo , Enfeng Song , Qiuqing Bai , Fu Lin

Spectral graph contrastive learning often constructs low- and high-frequency views to capture complementary graph signals, but these views are commonly combined by graph-level or node-agnostic fusion rules. We show that graph-level fusion…

机器学习 · 计算机科学 2026-05-11 Zhuolong Li , Boxue Yang , Haopeng Chen

Previous gait recognition methods primarily trained on labeled datasets, which require painful labeling effort. However, using a pre-trained model on a new dataset without fine-tuning can lead to significant performance degradation. So to…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Xuqian Ren , Shaopeng Yang , Saihui Hou , Chunshui Cao , Xu Liu , Yongzhen Huang

Aspect based sentiment analysis, predicting sentiment polarity of given aspects, has drawn extensive attention. Previous attention-based models emphasize using aspect semantics to help extract opinion features for classification. However,…

计算与语言 · 计算机科学 2021-04-13 Lu Xu , Lidong Bing , Wei Lu , Fei Huang

The packing problem, also known as cutting or nesting, has diverse applications in logistics, manufacturing, layout design, and atlas generation. It involves arranging irregularly shaped pieces to minimize waste while avoiding overlap.…

机器学习 · 计算机科学 2023-11-01 Tianyang Xue , Mingdong Wu , Lin Lu , Haoxuan Wang , Hao Dong , Baoquan Chen

Aspect term extraction is a fundamental task in fine-grained sentiment analysis, which aims at detecting customer's opinion targets from reviews on product or service. The traditional supervised models can achieve promising results with…

计算与语言 · 计算机科学 2023-03-03 Jingli Shi , Weihua Li , Quan Bai , Yi Yang , Jianhua Jiang

Learning-based methods have become increasingly popular for solving vehicle routing problems due to their near-optimal performance and fast inference speed. Among them, the combination of deep reinforcement learning and graph representation…

机器学习 · 计算机科学 2024-05-22 Zhenwei Wang , Ruibin Bai , Fazlullah Khan , Ender Ozcan , Tiehua Zhang

Self-supervised contrastive learning (SSCL) has achieved significant milestones in remote sensing image (RSI) understanding. Its essence lies in designing an unsupervised instance discrimination pretext task to extract image features from a…

机器学习 · 计算机科学 2023-11-29 Zhaoyang Zhang , Zhen Ren , Chao Tao , Yunsheng Zhang , Chengli Peng , Haifeng Li

Contextually Entangled Gradient Mapping (CEGM) introduces a new approach to gradient optimization, redefining the relationship between contextual embeddings and gradient updates to enhance semantic coherence and reasoning capabilities in…

机器学习 · 计算机科学 2025-08-11 Colin Sisate , Alistair Goldfinch , Vincent Waterstone , Sebastian Kingsley , Mariana Blackthorn

Aspect-based sentiment analysis (ABSA) task is a multi-grained task of natural language processing and consists of two subtasks: aspect term extraction (ATE) and aspect polarity classification (APC). Most of the existing work focuses on the…

计算与语言 · 计算机科学 2020-02-13 Heng Yang , Biqing Zeng , JianHao Yang , Youwei Song , Ruyang Xu

Human perception integrates multiple modalities, such as vision, hearing, and language, into a unified understanding of the surrounding reality. While recent multimodal models have achieved significant progress by aligning pairs of…

计算机视觉与模式识别 · 计算机科学 2025-02-13 Giordano Cicchetti , Eleonora Grassucci , Luigi Sigillo , Danilo Comminiello

Instance-level image classification tasks have traditionally relied on single-instance labels to train models, e.g., few-shot learning and transfer learning. However, set-level coarse-grained labels that capture relationships among…

机器学习 · 计算机科学 2023-11-21 Renyu Zhang , Aly A. Khan , Yuxin Chen , Robert L. Grossman

The state-of-the-art solutions for Aspect-Level Sentiment Analysis (ALSA) were built on a variety of deep neural networks (DNN), whose efficacy depends on large amounts of accurately labeled training data. Unfortunately, high-quality…

机器学习 · 计算机科学 2019-07-02 Yanyan Wang , Qun Chen , Jiquan Shen , Boyi Hou , Murtadha Ahmed , Zhanhuai Li

Aspect sentiment triplet extraction (ASTE) is a crucial subtask of aspect-based sentiment analysis (ABSA) that aims to comprehensively identify sentiment triplets. Previous research has focused on enhancing ASTE through innovative…

计算与语言 · 计算机科学 2024-01-26 Baoxing Jiang , Shehui Liang , Peiyu Liu , Kaifang Dong , Hongye Li

Classification and clustering algorithms have been proved to be successful individually in different contexts. Both of them have their own advantages and limitations. For instance, although classification algorithms are more powerful than…

机器学习 · 计算机科学 2017-08-30 Tanmoy Chakraborty

Aspect-based sentiment analysis (ABSA) is a fine-grained sentiment analysis task that aims to align aspects and corresponding sentiments for aspect-specific sentiment polarity inference. It is challenging because a sentence may contain…

计算与语言 · 计算机科学 2022-07-18 Shuo Liang , Wei Wei , Xian-Ling Mao , Fei Wang , Zhiyong He