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HiTR: Hierarchical Topic Model Re-estimation for Measuring Topical Diversity of Documents [article]

Hosein Azarbonyad, Mostafa Dehghani, Tom Kenter, Maarten Marx, Jaap Kamps, Maarten de Rijke
2018 arXiv   pre-print
For measuring topical diversity of text documents, our HiTR approach improves over the state-of-the-art measured on PubMed dataset.  ...  A recent proposal for measuring topical diversity identifies three distributions for assessing the diversity of documents: distributions of words within documents, words within topics, and topics within  ...  HiTR's efficiency CONCLUSION We have proposed Hierarchical Topic model Re-estimation (HiTR), an approach for re-estimating topic models and applied them to measure topical diversity of text documents  ... 
arXiv:1810.05436v1 fatcat:y7qhgfr62zfhxl4webmf7nugna

HiTR: Hierarchical Topic Model Re-estimation for Measuring Topical Diversity of Documents

Hosein Azarbonyad, Mostafa Dehghani, Tom Kenter, Maarten Marx, Jaap Kamps, Maarten De Rijke
2018 IEEE Transactions on Knowledge and Data Engineering  
For measuring topical diversity of text documents, our HiTR approach improves over the state-of-the-art measured on PubMed dataset.  ...  A recent proposal for measuring topical diversity identifies three distributions for assessing the diversity of documents: distributions of words within documents, words within topics, and topics within  ...  We employ HiTR to re-estimate topic models and use the reestimated models for measuring topical diversity of documents.  ... 
doi:10.1109/tkde.2018.2874246 fatcat:5onylyejmzddlguujvyjocuzhq

Hierarchical Re-estimation of Topic Models for Measuring Topical Diversity [chapter]

Hosein Azarbonyad, Mostafa Dehghani, Tom Kenter, Maarten Marx, Jaap Kamps, Maarten de Rijke
2017 Lecture Notes in Computer Science  
Our re-estimation approach for measuring documents' topical diversity outperforms the state of the art on PubMed dataset which is commonly used for diversity experiments.  ...  We propose a hierarchical re-estimation approach for topic models to combat generality and impurity; the proposed approach operates at three levels: words, topics, and documents.  ...  Measuring topical diversity of documents To measure topical diversity of text documents, we propose HiTR (hierarchical topic model re-estimation).  ... 
doi:10.1007/978-3-319-56608-5_6 fatcat:xu7xbtl25nedbk55bdcc6kvroa

Hierarchical Re-estimation of Topic Models for Measuring Topical Diversity [article]

Hosein Azarbonyad and Mostafa Dehghani and Tom Kenter and Maarten Marx and Jaap Kamps and Maarten de Rijke
2017 arXiv   pre-print
Our re-estimation approach for measuring documents' topical diversity outperforms the state of the art on PubMed dataset which is commonly used for diversity experiments.  ...  We propose a hierarchical re-estimation approach for topic models to combat generality and impurity; the proposed approach operates at three levels: words, topics, and documents.  ...  Measuring topical diversity of documents To measure topical diversity of text documents, we propose HiTR (hierarchical topic model re-estimation).  ... 
arXiv:1701.04273v1 fatcat:h2smns34qnc7bglwpm6fmyryly

Survey on the Objectives of Recommender System: Measures, Solutions, Evaluation Methodology, and New Perspectives

Bushra Alhijawi, Arafat Awajan, Salam Fraihat
2022 ACM Computing Surveys  
However, other recommendation quality measures may have a significant impact on the overall performance of a recommender system and the satisfaction of users.  ...  This article aims to provide a comprehensive review of recent research efforts on recommender systems based on the objectives achieved: relevance, diversity, novelty, coverage, and serendipity.  ...  Topic modeling is an unsupervised learning algorithm based on statistics for discovering abstract "topics" that emerge in a set of documents.  ... 
doi:10.1145/3527449 fatcat:xc4ibrglpjgqzlgttplmgitedu

A two-stage heuristic for the university course timetabling problem [chapter]

Máté Pintér, Balázs Dávid
2019 StuCoSReC. Proceedings of the 2019 6th Student Computer Science Research Conference  
Published by University of Primorska Press Titov trg 4, si-6000 Koper Editor-in-Chief Jonatan Vinkler Managing Editor Alen Ježovnik Koper, 2019 isBN 978-961-7055-82-5 (pdf) www.hippocampus.si/isBN/978-  ...  Here, the three linear weighting parameters w, should be estimated on the basis of some models.  ...  for all of the measured classification metrics.  ... 
doi:10.26493/978-961-7055-82-5.27-30 fatcat:mv36atnxqvczjg7m7aetrpvy6y

Adversarial Image Perturbation with a Genetic Algorithm

Rok Kukovec, Špela Pečnik, Iztok Fister Jr., Sašo Karakatič
2021 Proceedings of the 2021 7th Student Computer Science Research Conference (StuCoSReC)   unpublished
The quality of image recognition with neural network models relies heavily on filters and parameters optimized through the training process.  ...  The workings of these algorithms can be compromised with adversarial perturbations of images.  ...  Martin Milanič for the initial suggestion of the problem, and to Ekki Köhler and his reseach group, for introducing the diverse world of graph searches to us.  ... 
doi:10.18690/978-961-286-516-0.6 fatcat:zqnjllzxvbf7rfcndkwfuikgxu

Anali za istrske in mediteranske študije Annali di Studi istriani e mediterranei Annals for Istrian and Mediterranean Studies Series Historia et Sociologia, 27, 2017, 2

Roderick Bailey, Simona Bergoč, Furio Bianco, Milan Bufon, Alexander Cherkasov, Lucija Čok, Lovorka Čoralić, Darko Darovec, Goran Filipi, Devan Jagodic
2017 KOPER 2017   unpublished
ACKNOWLEDGEMENTS This paper is the result of the projects: "The Role and Implementation of the National Spatial Plan and Regional Development Documents in Renewal of Strategic Research, Thinking and Governance  ...  Qualitative analysis criteria for the evaluation of urban-planning documents For the purpose of urban and spatial planning documentation analysis and evaluation in relation to the preservation and enhancement  ...  ; 2) Ali je Rawlsov model družbe res pošten/pravičen in sploh izvedljiv, ali je družba, ki si jo je zamisli Rawls sploh možna oz. ali lahko sploh (dobro) deluje?  ... 
fatcat:pwak2qpdczdmhcafbsv3vgkrpq