We describe a large-scale evaluation of four interactive question answering system with real users. The purpose of the evaluation was to develop evaluation methods and metrics for interactive QA systems. We present our evaluation method as a case study, and discuss the design and administration of the evaluation components and the effectiveness of several evaluation techniques with respect to t...

An increase in the speed of data mining algorithms can be achieved by improving the efciency of the underlying technologies. Query engines are key components in many knowledge discovery systems and the appropriate use of query engines can impact the performance of data mining algorithms. By taking advantage of hypothesis generation patterns, queries, generated from the hypotheses, can be evalua...

The present study aims at investigating the conceptions of happiness and unhappiness in a sample of Italian psychology undergraduates. Participants completed a questionnaire asking them to report the most important things that made them feel happy (happiness components) and those ones that made them feel unhappy (unhappiness components). Different measures of overall happiness and overall unhap...

The recent developments in Question Answering have kept with open-domain questions and collections, sometimes argued as being more difficult than narrow domain-focused questions and corpora. The biomedical field is indeed a specialized domain; however, its scope is fairly broad, so that considering a biomedical QA task is not necessarily such a simplification over open-domain QA as represented ...

Key operational networking tasks, such as troubleshooting and defending against attacks, greatly benefit from attaining views of network activity that are unified across space and time. This means that data from heterogeneous devices and systems is treated in a uniform fashion, and that analyzing past activity and detecting future instances follow the same procedures. Based on previous ideas th...

This paper describes a system for the summarization of multiple documents. The system produces multi-document summaries using clustering techniques to identify common themes across the set of documents. For each theme, the system identifies representative passages that are included in the final summary. We also describe a methodology for evaluation of our system which is based upon a question a...

With the continued growth of online semantic information, the processes of searching and managing this massive scale and heterogeneous content have become increasingly challenging. In this work, we present PowerAqua, an ontologybased Question Answering system that is able to answer queries by locating and integrating information, which can be distributed across heterogeneous semantic resources....

Actigraphic (ACT) recordings are used widely in schoolchildren as a less intrusive and more extended approach to evaluation of sleep problems. However, critical assessment of the validity and reliability of ACT against overnight polysomnography (NPSG) are unavailable. Thus, we explored the degree of concordance between NPSG and ACT in school-aged children to delineate potential ACT boundaries w...

BACKGROUND Non-medical professionals (consumers) are increasingly using the Internet to support their health information needs. However, the cognitive effort required to perform health information searches is affected by the consumer's familiarity with health topics. Consumers may have different levels of familiarity with individual health topics. This variation in familiarity may cause misunde...

For many emerging applications and environments , information systems designers and im-plementors must consider the tradeoos between eeciency and the quality of query answers. This exibility, while allowing numerous opportunities for optimization, complicates the development of various system components and their performance evaluation. In this short paper, we begin by outlining issues that ari...