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Suggestion mining is increasingly becoming an important task along with sentiment analysis. In today's cyberspace world, people not only express their sentiments and dispositions towards some entities or services, but they also spend…

计算与语言 · 计算机科学 2018-11-02 Hitesh Golchha , Deepak Gupta , Asif Ekbal , Pushpak Bhattacharyya

Recommendation models are predominantly trained using implicit user feedback, since explicit feedback is often costly to obtain. However, implicit feedback, such as clicks, does not always reflect users' real preferences. For example, a…

信息检索 · 计算机科学 2025-10-06 Mengchen Zhao , Yifan Gao , Yaqing Hou , Xiangyang Li , Pengjie Gu , Zhenhua Dong , Ruiming Tang , Yi Cai

Model-based offline reinforcement learning (RL) has emerged as a promising approach for recommender systems, enabling effective policy learning by interacting with frozen world models. However, the reward functions in these world models,…

信息检索 · 计算机科学 2025-05-13 Yi Zhang , Ruihong Qiu , Xuwei Xu , Jiajun Liu , Sen Wang

Online news recommender systems aim to address the information explosion of news and make personalized recommendation for users. In general, news language is highly condensed, full of knowledge entities and common sense. However, existing…

机器学习 · 统计学 2018-01-31 Hongwei Wang , Fuzheng Zhang , Xing Xie , Minyi Guo

In online advertising, users may be exposed to a range of different advertising campaigns, such as natural search or referral or organic search, before leading to a final transaction. Estimating the contribution of advertising campaigns on…

信息检索 · 计算机科学 2020-04-02 Dongdong Yang , Kevin Dyer , Senzhang Wang

Human visual attention has recently shown its distinct capability in boosting machine learning models. However, studies that aim to facilitate medical tasks with human visual attention are still scarce. To support the use of visual…

图像与视频处理 · 电气工程与系统科学 2022-02-16 Hongzhi Zhu , Robert Rohling , Septimiu Salcudean

The performance of deep neural networks improves with more annotated data. The problem is that the budget for annotation is limited. One solution to this is active learning, where a model asks human to annotate data that it perceived as…

计算机视觉与模式识别 · 计算机科学 2019-05-10 Donggeun Yoo , In So Kweon

On social network platforms, a user's behavior is based on his/her personal interests, or influenced by his/her friends. In the literature, it is common to model either users' personal preference or their socially influenced preference. In…

信息检索 · 计算机科学 2020-05-12 Qiaoan Chen , Hao Gu , Lingling Yi , Yishi Lin , Peng He , Chuan Chen , Yangqiu Song

Despite recommender systems play a key role in network content platforms, mining the user's interests is still a significant challenge. Existing works predict the user interest by utilizing user behaviors, i.e., clicks, views, etc., but…

信息检索 · 计算机科学 2023-08-15 Xuanji Xiao , Huaqiang Dai , Qian Dong , Shuzi Niu , Yuzhen Liu , Pei Liu

Cold-start problem is a fundamental challenge for recommendation tasks. The recent self-supervised learning (SSL) on Graph Neural Networks (GNNs) model, PT-GNN, pre-trains the GNN model to reconstruct the cold-start embeddings and has shown…

信息检索 · 计算机科学 2022-05-24 Bowen Hao , Hongzhi Yin , Jing Zhang , Cuiping Li , Hong Chen

Nowadays, users open multiple accounts on social media platforms and e-commerce sites, expressing their personal preferences on different domains. However, users' behaviors change across domains, depending on the content that users interact…

信息检索 · 计算机科学 2019-07-04 Dimitrios Rafailidis , Gerhard Weiss

Deep learning-based recommendation models are used pervasively and broadly, for example, to recommend movies, products, or other information most relevant to users, in order to enhance the user experience. Among various application domains…

机器学习 · 计算机科学 2020-04-15 Carole-Jean Wu , Robin Burke , Ed H. Chi , Joseph Konstan , Julian McAuley , Yves Raimond , Hao Zhang

Implicit sentiment analysis is challenging because sentiment toward an aspect is often inferred from events rather than expressed through explicit opinion words. Existing models typically learn from the final polarity label, which provides…

计算与语言 · 计算机科学 2026-05-21 Yaping Chai , Haoran Xie , Joe S. Qin

We present the construction of a multi-selection model to answer differentially private queries in the context of recommendation systems. The server sends back multiple recommendations and a ``local model'' to the user, which the user can…

机器学习 · 计算机科学 2025-04-11 Sahasrajit Sarmasarkar , Zhihao Jiang , Ashish Goel , Aleksandra Korolova , Kamesh Munagala

Recommendation systems aim to assist users to discover most preferred contents from an ever-growing corpus of items. Although recommenders have been greatly improved by deep learning, they still faces several challenges: (1) Behaviors are…

信息检索 · 计算机科学 2020-11-19 Wendi Ji , Keqiang Wang , Xiaoling Wang , TingWei Chen , Alexandra Cristea

Decision-focused learning (DFL) is an increasingly popular paradigm for training predictive models whose outputs are used in decision-making tasks. Instead of merely optimizing for predictive accuracy, DFL trains models to directly minimize…

In recommender systems, the user-item interaction data is usually sparse and not sufficient for learning comprehensive user/item representations for recommendation. To address this problem, we propose a novel dual-bridging recommendation…

信息检索 · 计算机科学 2019-10-17 Jingwei Ma , Jiahui Wen , Mingyang Zhong , Liangchen Liu , Chaojie Li , Weitong Chen , Yin Yang , Honghui Tu , Xue Li

Targeted sentiment classification aims at determining the sentimental tendency towards specific targets. Most of the previous approaches model context and target words with RNN and attention. However, RNNs are difficult to parallelize and…

计算与语言 · 计算机科学 2019-09-24 Youwei Song , Jiahai Wang , Tao Jiang , Zhiyue Liu , Yanghui Rao

Sentiment analysis is known as one of the most crucial tasks in the field of natural language processing and Convolutional Neural Network (CNN) is one of those prominent models that is commonly used for this aim. Although convolutional…

计算与语言 · 计算机科学 2021-02-24 Hossein Sadr , Mozhdeh Nazari Solimandarabi , Mir Mohsen Pedram , Mohammad Teshnehlab

Video-language modeling has attracted much attention with the rapid growth of web videos. Most existing methods assume that the video frames and text description are semantically correlated, and focus on video-language modeling at video…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Haoyu Lu , Mingyu Ding , Nanyi Fei , Yuqi Huo , Zhiwu Lu