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In latent Dirichlet allocation (LDA), topics are multinomial distributions over the entire vocabulary. However, the vocabulary usually contains many words that are not relevant in forming the topics. We adopt a variable selection method…

机器学习 · 计算机科学 2012-05-08 Dongwoo Kim , Yeonseung Chung , Alice Oh

Attention mechanisms underpin the success of large language models (LLMs), yet their substantial computational and memory overhead poses challenges for optimizing efficiency and performance. A critical bottleneck arises as KV cache and…

计算与语言 · 计算机科学 2025-07-24 Luoyang Sun , Cheng Deng , Jiwen Jiang , Xinjian Wu , Haifeng Zhang , Lei Chen , Lionel Ni , Jun Wang

LLM-based conversational systems have become a popular gateway for information access, yet most existing chatbots struggle to handle news-related trending queries effectively. To improve user experience, an effective trending query…

信息检索 · 计算机科学 2026-01-12 Kaichun Wang , Yanguang Chen , Ting Zhang , Mengyao Bao , Keyu Chen , Xu Hu , Yongliang Wang , Jingsheng Yang , Jinsong Zhang , Fei Lu

Feed recommendation models are widely adopted by numerous feed platforms to encourage users to explore the contents they are interested in. However, most of the current research simply focus on targeting user's preference and lack in-depth…

人工智能 · 计算机科学 2021-04-20 Huangbin Zhang , Chong Zhao , Yu Zhang , Danlei Wang , Haichao Yang

Selecting in-domain data from a large pool of diverse and out-of-domain data is a non-trivial problem. In most cases simply using all of the available data will lead to sub-optimal and in some cases even worse performance compared to…

计算与语言 · 计算机科学 2019-07-03 Mortaza , Doulaty , Thomas Hain

The success of deep neural networks (DNN) in machine perception applications such as image classification and speech recognition comes at the cost of high computation and storage complexity. Inference of uncompressed large scale DNN models…

机器学习 · 计算机科学 2020-07-06 Yihao Fang , Shervin Manzuri Shalmani , Rong Zheng

Real time, accurate passive seismic event detection is a critical safety measure across a range of monitoring applications from reservoir stability to carbon storage to volcanic tremor detection. The most common detection procedure remains…

地球物理 · 物理学 2020-12-08 Claire Birnie , Fredrik Hansteen

The focus of this work is on developing probabilistic models for user activity in social networks by incorporating the social network influence as perceived by the user. For this, we propose a coupled Hidden Markov Model, where each user's…

物理与社会 · 物理学 2013-05-10 Vasanthan Raghavan , Greg Ver Steeg , Aram Galstyan , Alexander G. Tartakovsky

With the development of technology, the use of social media has become quite common. Analyzing comments on social media in areas such as media and advertising plays an important role today. For this reason, new and traditional natural…

计算与语言 · 计算机科学 2021-10-04 Zekeriya Anil Guven , Banu Diri , Tolgahan Cakaloglu

This paper introduces a novel deep learning framework including a lexicon-based approach for sentence-level prediction of sentiment label distribution. We propose to first apply semantic rules and then use a Deep Convolutional Neural…

计算与语言 · 计算机科学 2017-06-27 Huy Nguyen , Minh-Le Nguyen

Prediction of popularity has profound impact for social media, since it offers opportunities to reveal individual preference and public attention from evolutionary social systems. Previous research, although achieves promising results,…

社会与信息网络 · 计算机科学 2017-12-14 Bo Wu , Wen-Huang Cheng , Yongdong Zhang , Qiushi Huang , Jintao Li , Tao Mei

Long Short-Term Memory (LSTM) networks are often used to capture temporal dependency patterns. By stacking multi-layer LSTM networks, it can capture even more complex patterns. This paper explores the effectiveness of applying stacked LSTM…

机器学习 · 计算机科学 2020-11-03 Frank Xiao

Disaster prediction is one of the most critical tasks towards disaster surveillance and preparedness. Existing technologies employ different machine learning approaches to predict incoming disasters from historical environmental data.…

计算与语言 · 计算机科学 2020-08-12 Hamada M. Zahera , Mohamed Ahmed Sherif , Axel Ngonga

In this paper, we present an experiment on using deep learning and transfer learning techniques for emotion analysis in tweets and suggest a method to interpret our deep learning models. The proposed approach for emotion analysis combines a…

计算与语言 · 计算机科学 2020-12-14 Yasas Senarath , Uthayasanker Thayasivam

Probabilistic Latent Semantic Analysis is a novel statistical technique for the analysis of two-mode and co-occurrence data, which has applications in information retrieval and filtering, natural language processing, machine learning from…

机器学习 · 计算机科学 2013-01-30 Thomas Hofmann

Deep learning is a popular machine learning approach which has achieved a lot of progress in all traditional machine learning areas. Internet of thing (IoT) and Smart City deployments are generating large amounts of time-series sensor data…

网络与互联网体系结构 · 计算机科学 2021-04-15 Xiaofeng Xie , Di Wu , Siping Liu , Renfa Li

During broadcast events such as the Superbowl, the U.S. Presidential and Primary debates, etc., Twitter has become the de facto platform for crowds to share perspectives and commentaries about them. Given an event and an associated…

社会与信息网络 · 计算机科学 2012-12-24 Yuheng Hu , Ajita John , Fei Wang , Subbarao Kambhampati

Mobile edge caching enables content delivery directly within the radio access network, which effectively alleviates the backhaul burden and reduces round-trip latency. To fully exploit the edge resources, the most popular contents should be…

网络与互联网体系结构 · 计算机科学 2017-09-19 Peng Yang , Ning Zhang , Shan Zhang , Li Yu , Junshan Zhang , Xuemin Shen

The efficiency of large language models (LLMs) remains a critical challenge, particularly in contexts where computational resources are limited. Traditional attention mechanisms in these models, while powerful, require significant…

计算与语言 · 计算机科学 2024-07-19 Bingli Liao , Danilo Vasconcellos Vargas

Variational Bayes (VB) applied to latent Dirichlet allocation (LDA) has become the most popular algorithm for aspect modeling. While sufficiently successful in text topic extraction from large corpora, VB is less successful in identifying…

机器学习 · 计算机科学 2022-08-22 Rebecca M. C. Taylor , Johan A. du Preez