Clustering is used to divide a collection of data into groups based on similarity of objects. With respect to IR, document clustering has been studied. An information retrieval (IR) system would always return a list of retrieved documents to the user. The post-retrieval documents can be clustered in order to help users browse and navigate the searching results. For this purpose, Zamir and Etzio...

I view the World Wide Web as an information food chain (figure 1). The maze of pages and hyperlinks that comprise the Web are at the very bottom of the chain. The WebCrawlers and Alta Vistas of the world are information herbivores; they graze on Web pages and regurgitate them as searchable indices. Today, most Web users feed near the bottom of the information food chain, but the time is ripe to...

SPRING 2015 55 Extracting information from a gigantic data source such as the web has been considered a major research challenge, and over the years many different approaches (Etzioni et al. 2004; Banko et al. 2007; Carlson et al. 2010; Freedman and Ramshaw 2011; Nakashole, Theobald, and Weikum 2011) have been proposed. Nevertheless, the current state of the art has mainly addressed tasks for w...

Administration. DOI: 10.1111/puar.12303. citizens has enabled them to bypass questionable audit processes and actually increase the accountability of public bodies. After grassroots organizations demanded that the details of fi nancial transactions be published outside public buildings in the spirit of transparency, they taught groups of young people (many of whom had little education) to inter...

The case for using economic incentives to solve social problems has acquired some ideological overtones. Frequently, the incentive approach is characterized as advancing core values of the American society, such as freedom. individual dignity, and economic welfare, while “command and contro1”techniques (C&C) are said to entail oppression, coercion, and waste. Adjectives attached to C&C systems ...

It has frequently been observed that most of the world’s data lies outside database systems. The reason is that database systems focus on structured data, leaving the unstructured realm to others. The world of unstructured data has several very appealing properties, such as ease of authoring, querying and data sharing. In contrast, authoring, querying and sharing structured data require signifi...

Recently as large scale networks such as tile Internet and intranets grow, it is becoming harder to carry out our jobs like system development/maintenance and information gathering/utilization. As solutions to this problem, the agent techniques such as WWW robots (Koster 1996), Telescript (White 1994), and Softbot (Etzioni & Weld 1994) are proposed. In this paper, we propose a rnuhiagent system...