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Keywords: Product reviews Readability tests Review helpfulness Word of mouth a b s t r a c t Online reviews have received much attention recently in the literature, as their visibility has been proven to play an important role during the purchase process. Furthermore, recent theoretical insight argue that the votes casted on how helpful an online review is(More)
Purpose – The purpose of this paper is to present an approach to evaluating contributions in collaborative authoring environments and in particular wikis using social network measures. Design / methodology / approach – A social network model for wikipedia has been constructed and metrics of importance such as centrality have been defined. Data have been(More)
— This paper discusses ways of navigating online contact networks-networks of social connections defined under a relational context-on a way that can provide much more meaningful information to those that use them. In particular we use the concept of a weak and strong relational tie to address the different levels of social distance and express them using a(More)
The purpose of this study is to define a bibliometric indicator of the scientific impact of a journal, which combines objectivity with the ability to bridge many different bibliometric factors and in particular the side factors presented along with celebrated ISI impact factor. The particular goal is to determine a standard threshold value in which an(More)
Online product reviews is an important advantage for consumers of experience goods in online marketplaces and act as a useful source of information during the purchase of a good. Furthermore in some online marketplaces consumers have the opportunity to evaluate how helpful a review was by using a binary evaluation interface provided by the online(More)
The new social and technological framework of Web 2.0 has resulted in the availability of significant volumes of user generated content. In some cases, user generated content describes existing services, as in the case of travel reviews, in which the users express their experiences and opinions about hotels among other aspects of travel experience. Existing(More)
We present a new phrase-based generated list of opinion bearing words and phrases for the German language. The list contains adjectives and nouns as well as adjective-and noun-based phrases and their opinion values on a continuous range between −1 and +1. For each word or phrase two additional quality measures are given. The list was produced using a large(More)
The well-known 3V architectural paradigm for Big Data introduced by Laney (2011) provides a simplified framework for defining the architecture of a big data platform to be deployed in various scenarios tackling processing of massive datasets. While additional components such as Variability and Veracity have been discussed as an extension to the 3V model,(More)