Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Nir Ofek"'
Publikováno v:
Neurocomputing. 243:88-102
Datasets that have imbalanced class distributions pose a challenge for learning and classification algorithms. Imbalanced datasets exist in many domains, such as: fraud detection, sentiment analysis, churn prediction, and intrusion detection in compu
Publikováno v:
Cognitive Computation. 8:467-477
Sentiment analysis in natural language text is a challenging task involving a deep understanding of both syntax and semantics. Leveraging the polarity of multiword expressions—or concepts—rather than single words can mitigate the difficulty of su
Autor:
Nir Ofek, Edward Boon
Publikováno v:
International Journal of Market Research. 58:95-118
Deal of the day is a form of e-commerce in which an intermediary allows merchants access to a subscriber list, to promote their offerings at a discount. This study performs a cluster analysis on the purchase history of a deal intermediary, to identif
Publikováno v:
Communications in Computer and Information Science ISBN: 9783319933535
ICISSP (Revised Selected Papers)
ICISSP (Revised Selected Papers)
Smartphones are becoming increasingly ubiquitous. Like recommended best practices for personal computers, users are encouraged to install antivirus and intrusion detection software on their mobile devices. However, even with such software these devis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c41e88512be118b4f08554a6f0baa1b3
https://doi.org/10.1007/978-3-319-93354-2_1
https://doi.org/10.1007/978-3-319-93354-2_1
Publikováno v:
Knowledge-Based Systems. 84:162-178
We present ConSent, a novel context-based approach for the task of sentiment analysis. Our approach builds on techniques from the field of information retrieval to identify key terms indicative of the existence of sentiment. We model these terms and
Publikováno v:
Tourism and Hospitality Research. 15:105-114
Deal of the day is a form of sales promotion that offers merchants the possibility to promote their product at a discount to a mailing list of subscribers that is managed by an intermediary. The objective of the study presented in this paper is to le
Autor:
Nir Ofek, Asaf Shabtai
Publikováno v:
IEEE Internet Computing. 18:20-27
With more individuals using social networks as well as a wider range of activities available by these platforms, there is a growing need to develop knowledge-extraction methods. This article presents ExaMine, a system for identifying expertise within
Publikováno v:
Journal of Computer Science and Technology. 29:392-407
Decision trees have three main disadvantages: reduced performance when the training set is small; rigid decision criteria; and the fact that a single “uncharacteristic” attribute might “derail” the classification process. In this paper we pre
Autor:
Nir Ofek, Lior Rokach
Publikováno v:
Journal of the Association for Information Science and Technology. 66:213-218
Wikipedia, like other encyclopedias, includes biographies of notable people. However, because it is jointly written by many contributors, it is subject to constant manipulation by contributors attempting to add biographies of non-notable people. Over
Publikováno v:
SIGIR
Wikipedia - the online encyclopedia - has long been used as a source of information for researchers, as well as being a subject of research itself. Wikipedia has been shown to be effective in recommender systems, sentiment analysis, validation and mu