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1997
Result 1 – 20 of 695
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1 published by ACM
October 2016 CIKM '16: Proceedings of the 25th ACM International on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 2,   Downloads (12 Months): 103,   Downloads (Overall): 103

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Storyline detection aims to connect seemly irrelevant single documents into meaningful chains, which provides opportunities for understanding how events evolve over time and what triggers such evolutions. Most previous work generated the storylines through unsupervised methods that can hardly reveal underlying factors driving the evolution process. This paper introduces a ...
Keywords: topic modeling, storyline, twitter
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2 published by ACM
February 2017 WSDM '17: Proceedings of the Tenth ACM International Conference on Web Search and Data Mining
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 30,   Downloads (12 Months): 155,   Downloads (Overall): 155

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Latent Dirichlet Allocation (LDA) is an extremely popular probabilistic topic model used for a diverse class of appications. While highly effective, one important limitation of LDA is the high memory footprint of its inferencing algorithm, making it difficult to scale to a large dataset. In my thesis, I propose sdLDA, ...
Keywords: topic model, scalability, text analysis
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3 published by ACM
July 2016 SIGIR '16: Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 17,   Downloads (12 Months): 264,   Downloads (Overall): 264

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Discovering the author's interest over time from documents has important applications in recommendation systems, authorship identification and opinion extraction. In this paper, we propose an interest drift model (IDM), which monitors the evolution of author interests in time-stamped documents. The model further uses the discovered author interest information to help ...
Keywords: author topic model, dynamic author interests, dynamic author topic model, topic model
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4 published by ACM
July 2016 SIGIR '16: Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 2
Downloads (6 Weeks): 79,   Downloads (12 Months): 1,211,   Downloads (Overall): 1,211

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For many applications that require semantic understanding of short texts, inferring discriminative and coherent latent topics from short texts is a critical and fundamental task. Conventional topic models largely rely on word co-occurrences to derive topics from a collection of documents. However, due to the length of each document, short ...
Keywords: short texts, topic model, word embeddings
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5 published by ACM
May 2016 WebSci '16: Proceedings of the 8th ACM Conference on Web Science
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 7,   Downloads (12 Months): 41,   Downloads (Overall): 59

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Topic modeling is a powerful tool for analyzing large collections of user-generated web content, but it still suffers from problems with topic stability, which are especially important for social sciences. We evaluate stability for different topic models and propose a new model, granulated LDA, that samples short sequences of neighboring ...
Keywords: latent dirichlet allocation, topic modeling, gibbs sampling
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6 published by ACM
July 2016 SIGIR '16: Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 8,   Downloads (12 Months): 123,   Downloads (Overall): 123

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Automated evaluation of topic quality remains an important unsolved problem in topic modeling and represents a major obstacle for development and evaluation of new topic models. Previous attempts at the problem have been formulated as variations on the coherence and/or mutual information of top words in a topic. In this ...
Keywords: topic quality, text mining, topic modeling
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7 published by ACM
October 2016 CIKM '16: Proceedings of the 25th ACM International on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 25,   Downloads (12 Months): 321,   Downloads (Overall): 321

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Developing text classifiers often requires a large number of labeled documents as training examples. However, manually labeling documents is costly and time-consuming. Recently, a few methods have been proposed to label documents by using a small set of relevant keywords for each category, known as dataless text classification . In ...
Keywords: dataless text classification, text analysis, topic modeling
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8 published by ACM
October 2016 CIKM '16: Proceedings of the 25th ACM International on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 12,   Downloads (12 Months): 169,   Downloads (Overall): 169

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Mining topics in short texts (e.g. tweets, instant messages) can help people grasp essential information and understand key contents, and is widely used in many applications related to social media and text analysis. The sparsity and noise of short texts often restrict the performance of traditional topic models like LDA. ...
Keywords: topic model, Bayesian nonparametric model, text mining
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9
April 2016 WWW '16: Proceedings of the 25th International Conference on World Wide Web
Publisher: International World Wide Web Conferences Steering Committee
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 7,   Downloads (12 Months): 90,   Downloads (Overall): 129

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Our proposal, $N$-gram over Context (NOC), is a nonparametric topic model that aims to help our understanding of a given corpus, and be applied to many text mining applications. Like other topic models, NOC represents each document as a mixture of topics and generates each word from one topic. Unlike ...
Keywords: graphical models, nonparametric models, topic models, latent variable models, mapreduce, N-gram topic model
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10 published by ACM
February 2017 WSDM '17: Proceedings of the Tenth ACM International Conference on Web Search and Data Mining
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 24,   Downloads (12 Months): 64,   Downloads (Overall): 64

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Document network is a kind of intriguing dataset which provides both topical (texts) and topological (links) information. Most previous work assumes that documents closely linked with each other share common topics. However, the associations among documents are usually complex, which are not limited to the homophily (i.e., tendency to link ...
Keywords: topic models, copula, document networks, plsa
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11 published by ACM
October 2016 CIKM '16: Proceedings of the 25th ACM International on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 1,   Downloads (12 Months): 41,   Downloads (Overall): 41

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We study the problem of generating DAG-structured category hierarchies over a given set of documents associated with "importance" scores. Example application includes automatically generating Wikipedia disambiguation pages for a set of articles having click counts associated with them. Unlike previous works, which focus on clustering the set of documents using ...
Keywords: topic model, hierarchical categorisation, gibbs sampling
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12
April 2017 WWW '17 Companion: Proceedings of the 26th International Conference on World Wide Web Companion
Publisher: International World Wide Web Conferences Steering Committee
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 3,   Downloads (12 Months): 12,   Downloads (Overall): 12

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Predicting the future is hard, more so in active research areas. In this paper, we customize an established model for citation prediction of research papers and apply it on research topics. We argue that research topics, rather than individual publications, have wider relevance in the research ecosystem, for individuals as ...
Keywords: software engineering publication, topic model, citation prediction
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13 published by ACM
April 2017 SAC '17: Proceedings of the Symposium on Applied Computing
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 15,   Downloads (12 Months): 19,   Downloads (Overall): 19

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Topic modeling is an important area which aims at indexing and exploring massive data streams. In this paper we introduce a discrete Dynamic Topic Modeling (dDTM) algorithm, which is able to model a dynamic topic that is not necessarily present over all time slices in a stream of documents. Our ...
Keywords: dynamic topic modeling, news mining, stream mining
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14
April 2016 WWW '16: Proceedings of the 25th International Conference on World Wide Web
Publisher: International World Wide Web Conferences Steering Committee
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 16,   Downloads (12 Months): 292,   Downloads (Overall): 375

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Various topic models have been developed for sentiment analysis tasks. But the simple topic-sentiment mixture assumption prohibits them from finding fine-grained dependency between topical aspects and sentiments. In this paper, we build a Hidden Topic Sentiment Model (HTSM) to explicitly capture topic coherence and sentiment consistency in an opinionated text ...
Keywords: topic modeling, aspect detection, sentiment analysis
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15
April 2017 WWW '17: Proceedings of the 26th International Conference on World Wide Web
Publisher: International World Wide Web Conferences Steering Committee
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 9,   Downloads (12 Months): 51,   Downloads (Overall): 51

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Topic modeling has traditionally been studied for single text collections and applied to social media data represented in the form of text documents. With the emergence of many social media platforms, users find themselves using different social media for posting content and for social interaction. While many topics may be ...
Keywords: user preference, topic modeling, multiple social networks
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16 published by ACM
March 2017 LAK '17: Proceedings of the Seventh International Learning Analytics & Knowledge Conference
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 16,   Downloads (12 Months): 58,   Downloads (Overall): 58

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Student knowledge modeling is an important part of modern personalized learning systems, but typically relies upon valid models of the structure of the content and skill in a domain. These models are often developed through expert tagging of skills to items. However, content creators in crowdsourced personalized learning systems often ...
Keywords: correlational topic modeling, mathematics education, intelligent tutoring systems, natural language processing, topic modeling
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17 published by ACM
April 2017 ASPLOS '17: Proceedings of the Twenty-Second International Conference on Architectural Support for Programming Languages and Operating Systems
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 31,   Downloads (12 Months): 110,   Downloads (Overall): 110

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Latent Dirichlet Allocation (LDA) is a popular tool for analyzing discrete count data such as text and images. Applications require LDA to handle both large datasets and a large number of topics. Though distributed CPU systems have been used, GPU-based systems have emerged as a promising alternative because of the ...
Keywords: lda, palellel computing, topic model, gpu
Also published in:
May 2017  ACM SIGOPS Operating Systems Review - SIGOPS Member Plus: Volume 51 Issue 2, June 2017 May 2017  ACM SIGPLAN Notices - ASPLOS '17: Volume 52 Issue 4, April 2017 May 2017  ACM SIGARCH Computer Architecture News - Asplos'17: Volume 45 Issue 1, March 2017
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18 published by ACM
November 2016 WAMA 2016: Proceedings of the International Workshop on App Market Analytics
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 9,   Downloads (12 Months): 94,   Downloads (Overall): 94

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Does the advertised behavior of apps correlate with what a user sees on a screen? In this paper, we introduce a technique to statically extract the text from the user interface definitions of an Android app. We use this technique to compare the natural language topics of an app’s user ...
Keywords: Android, App mining, Topic models, UI Anomalies
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19 published by ACM
July 2016 SIGIR '16: Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 5,   Downloads (12 Months): 135,   Downloads (Overall): 135

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Social media has become a major source for analyzing all aspects of daily life. Thanks to dedicated latent topic analysis methods such as the Ailment Topic Aspect Model (ATAM), public health can now be observed on Twitter. In this work, we are interested in monitoring people's health over time. Recently, ...
Keywords: social media, ailments, public health, topic models
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20
April 2016 WWW '16: Proceedings of the 25th International Conference on World Wide Web
Publisher: International World Wide Web Conferences Steering Committee
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 11,   Downloads (12 Months): 161,   Downloads (Overall): 208

Full text available: PDFPDF
Dynamic topic models (DTMs) are very effective in discovering topics and capturing their evolution trends in time series data. To do posterior inference of DTMs, existing methods are all batch algorithms that scan the full dataset before each update of the model and make inexact variational approximations with mean-field assumptions. ...
Keywords: MCMC, topic model, MPI, dynamic topic model, large scale machine learning, parallel computing
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Result 1 – 20 of 695
Result page: 1 2 3 4 5 6 7 8 9 10 >>



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