An important question in Library and Information Science (LIS) is for what purpose information is sought; information seeking is not carried out for its own sake but to achieve an objective that lies beyond the practice of information seeking itself. Therefore, instrumentality could be seen as an overarching principle in the LIS field. Three different epistemological approaches to information n...

Reports of key information systems issues have been published over the last two decades in many journals. Leading IS journals (e.g., MIS Quarterly, Information & Management, among others) have published key IS management issue reports every three or four years over the last 15 years, and will probably continue to provide such reports in the future. Although these reports claim to provide decisi...

In recent years, learning ranking function for information retrieval has drawn the attentions of the researchers from information retrieval and machine learning community. In existing approaches of learning to rank, the sparse prediction model only can be learned by support vector learning approach. However, the number of support vectors grows steeply with the size of the training data set. In ...

This study aimed to develop TAM model to explain adoption of information technologies process .Descriptive – correlation study was conducted and data were collected through a survey. Statistical population was West Azerbaijan Agricultural extension agents who 120 of them were selected randomly using the krejcie and Morgan table. A questionnaire was employed to measure the variables in the model...

This paper investigates the concept of information. It follows different approaches for defining information before discussing a knowledge-in-action view on information as part of sociomaterial practices. Drawing from Stamper’s (1991) extended semiological framework the paper proposes its reinterpretation to study information as a sociomaterial phenomenon. The paper further argues that rather t...

The forces of globalisation, innovation, and the dynamic nature of information communication have changed the nature and complexity of communication in information systems projects. Success in project management in different nations depends on a vast array of different and complex variables and elements. Our research in Germany, India and Australia suggests that many diverse and yet crucial var...

A large body of work in the information retrieval area has highlighted that relevance is a complex and a challenging concept. The underlying complexity appears mainly from the fact that relevance is estimated by considering multiple dimensions and that most of them are subjective since they are user-dependent. While the most used dimension is topicality, recent works risen particularly from per...

In TREC 2011 Microblog Track, we explore the use of pseudo relevance feedback to expand original query terms in topics. Hyperlink is used to enhance the performance of the retrieval results. And we set a threshold of entropy to filter retrieval results. Microblog is a Realtime Adhoc Task, so we make use of average querytweettime that comes from pseudo relevance feedback to change retrieval scor...