نتایج جستجو برای: source ranking

تعداد نتایج: 451669  

2013
Yining Wang Liwei Wang Yuanzhi Li Di He Tie-Yan Liu Wei Chen

A central problem in ranking is to design a ranking measure for evaluation of ranking functions. In this paper we study, from a theoretical perspective, the widely used Normalized Discounted Cumulative Gain (NDCG)-type ranking measures. Although there are extensive empirical studies of NDCG, little is known about its theoretical properties. We first show that, whatever the ranking function is, ...

Journal: :Information Systems Frontiers 2006
Leonard Barolli Akio Koyama Arjan Durresi Giuseppe De Marco

Due to the opportunities provided by the Internet, more and more people are taking advantage of distance learning courses and during the last few years enormous research efforts have been dedicated to the development of distance learning systems. So far, many e-learning systems are proposed and used practically. However, in these systems the e-learning completion rate is about 30%. One of the r...

Journal: :CoRR 2018
Mladen Dimovski Vladimir Ilievski Claudiu Musat Andreea Hossmann Michael Baeriswyl

Goal–oriented (GO) dialogue systems rely on an initial natural language understanding (NLU) module to determine the user’s intention and parameters thereof — also known as slots. Since the systems, also known as bots, help the users with solving problems in relatively narrow domains, they require training data within those domains. This leads to significant data availability issues that inhibit...

Journal: :Discrete Mathematics 2004

Journal: :Journal of the American Society for Information Science 2000

Journal: :Library Hi Tech 2009

Journal: :IOSR Journal of Engineering 2013

Journal: :Expert Systems 2016

Journal: :Journal of the Brazilian Computer Society 2014

Journal: :Theoretical Economics 2018

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