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Rooting in the scarcity of most attributes, realistic pedestrian attribute datasets exhibit unduly skewed data distribution, from which two types of model failures are delivered: (1) label imbalance: model predictions lean greatly towards…

计算机视觉与模式识别 · 计算机科学 2024-05-09 Yibo Zhou , Hai-Miao Hu , Yirong Xiang , Xiaokang Zhang , Haotian Wu

Detecting edges in images suffers from the problems of (P1) heavy imbalance between positive and negative classes as well as (P2) label uncertainty owing to disagreement between different annotators. Existing solutions address P1 using…

计算机视觉与模式识别 · 计算机科学 2024-03-08 Bedrettin Cetinkaya , Sinan Kalkan , Emre Akbas

Aspect-oriented Fine-grained Opinion Extraction (AFOE) aims at extracting aspect terms and opinion terms from review in the form of opinion pairs or additionally extracting sentiment polarity of aspect term to form opinion triplet. Because…

计算与语言 · 计算机科学 2020-11-04 Zhen Wu , Chengcan Ying , Fei Zhao , Zhifang Fan , Xinyu Dai , Rui Xia

I propose a novel dual-attention model(DAM) for aspect-level sentiment classification. Many methods have been proposed, such as support vector machines for artificial design features, long short-term memory networks based on attention…

计算与语言 · 计算机科学 2023-03-15 Mengfei Ye

Self-supervised representation learning has been extremely successful in medical image analysis, as it requires no human annotations to provide transferable representations for downstream tasks. Recent self-supervised learning methods are…

计算机视觉与模式识别 · 计算机科学 2023-01-12 Hong-Yu Zhou , Chixiang Lu , Liansheng Wang , Yizhou Yu

Aspect-based sentiment analysis (ABSA), a popular research area in NLP has two distinct parts -- aspect extraction (AE) and labeling the aspects with sentiment polarity (ALSA). Although distinct, these two tasks are highly correlated. The…

State-of-the-art pre-trained image models predominantly adopt a two-stage approach: initial unsupervised pre-training on large-scale datasets followed by task-specific fine-tuning using Cross-Entropy loss~(CE). However, it has been…

计算机视觉与模式识别 · 计算机科学 2024-11-18 Zijun Long , George Killick , Lipeng Zhuang , Gerardo Aragon-Camarasa , Zaiqiao Meng , Richard Mccreadie

Scene coordinate regression (SCR) methods are a family of visual localization methods that directly regress 2D-3D matches for camera pose estimation. They are effective in small-scale scenes but face significant challenges in large-scale…

计算机视觉与模式识别 · 计算机科学 2024-06-07 Fangjinhua Wang , Xudong Jiang , Silvano Galliani , Christoph Vogel , Marc Pollefeys

Graph clustering is a longstanding research topic, and has achieved remarkable success with the deep learning methods in recent years. Nevertheless, we observe that several important issues largely remain open. On the one hand, graph…

机器学习 · 计算机科学 2023-05-08 Li Sun , Feiyang Wang , Junda Ye , Hao Peng , Philip S. Yu

Aspect Sentiment Triplet Extraction (ASTE) aims to extract triplets from a sentence, including target entities, associated sentiment polarities, and opinion spans which rationalize the polarities. Existing methods are short on building…

计算与语言 · 计算机科学 2021-11-02 Lianzhe Huang , Peiyi Wang , Sujian Li , Tianyu Liu , Xiaodong Zhang , Zhicong Cheng , Dawei Yin , Houfeng Wang

Audio Chord Estimation (ACE) holds a pivotal role in music information research, having garnered attention for over two decades due to its relevance for music transcription and analysis. Despite notable advancements, challenges persist in…

声音 · 计算机科学 2025-09-03 Andrea Poltronieri , Xavier Serra , Martín Rocamora

Sharpness-aware and gradient-alignment methods have been shown to improve generalization, however each family of methods targets a single geometric property of the loss landscape, while ignoring the other. In this paper, we show that this…

机器学习 · 计算机科学 2026-05-11 Aristotelis Ballas , Christos Diou

The Aspect Sentiment Triplet Extraction (ASTE) task aims to extract aspect terms, opinion terms, and their corresponding sentiment polarity from a given sentence. It remains one of the most prominent subtasks in fine-grained sentiment…

计算与语言 · 计算机科学 2025-02-05 Qingling Li , Wushao Wen , Jinghui Qin

Multi-relational graph clustering has demonstrated remarkable success in uncovering underlying patterns in complex networks. Representative methods manage to align different views motivated by advances in contrastive learning. Our empirical…

机器学习 · 计算机科学 2024-07-25 Zhixiang Shen , Haolan He , Zhao Kang

Group-level emotion recognition (GER) aims to identify holistic emotions within a scene involving multiple individuals. Current existed methods underestimate the importance of visual scene contextual information in modeling individual…

计算机视觉与模式识别 · 计算机科学 2025-09-29 Qing Zhu , Wangdong Guo , Qirong Mao , Xiaohua Huang , Xiuyan Shao , Wenming Zheng

Aspect term extraction is one of the important subtasks in aspect-based sentiment analysis. Previous studies have shown that using dependency tree structure representation is promising for this task. However, most dependency tree structures…

计算与语言 · 计算机科学 2019-05-07 Huaishao Luo , Tianrui Li , Bing Liu , Bin Wang , Herwig Unger

Research in emotion analysis is scattered across different label formats (e.g., polarity types, basic emotion categories, and affective dimensions), linguistic levels (word vs. sentence vs. discourse), and, of course, (few well-resourced…

计算与语言 · 计算机科学 2021-11-09 Sven Buechel , Luise Modersohn , Udo Hahn

In this work, a problem associated with imbalanced text corpora is addressed. A method of converting an imbalanced text corpus into a balanced one is presented. The presented method employs a clustering algorithm for conversion. Initially…

信息检索 · 计算机科学 2017-06-27 Lavanya Narayana Raju , Mahamad Suhil , D S Guru , Harsha S Gowda

Aspect Sentiment Triplet Extraction (ASTE) is a burgeoning subtask of fine-grained sentiment analysis, aiming to extract structured sentiment triplets from unstructured textual data. Existing approaches to ASTE often complicate the task…

计算与语言 · 计算机科学 2024-04-16 Qiao Sun , Liujia Yang , Minghao Ma , Nanyang Ye , Qinying Gu

Imbalanced data commonly exists in real world, espacially in sentiment-related corpus, making it difficult to train a classifier to distinguish latent sentiment in text data. We observe that humans often express transitional emotion between…

计算与语言 · 计算机科学 2019-03-29 Tao Zhang , Xing Wu , Meng Lin , Jizhong Han , Songlin Hu