The quality of the ranking function is an important factor that determines the quality of the Information Retrieval system. Each document is assigned a score by the ranking function; the score indicates the likelihood of relevance of the document given a query. In the vector space model, the ranking function is defined by a mathematic expression such as: ∑ ∈ = q t d q score ) , ( tf(t in d) * i...

Packaging does not only protect a product but also provides directions for using the product, as well relevant information about its content and nutritional value. This study was undertaken to assess Granulated Cassava (Gari) sellers’ perception, profitability determinants of packaging in Ashanti Region. The area purposively selected because active participation contribution marketing activitie...

Query term misrecognition caused by the speech recognizer is one of the important issues in the spoken query information retrieval. The misrecognized term in the transcribed query leads to the retrieval of irrelevant documents. To raise the correct ranking of the retrieved documents, we use a speech recognition confidence score based on word posterior probability to weight the term in the infer...

The goal of the current research project is to develop a ques­ tion answering system for answering why-questions (why QA). Our system is a pipeline consisting of an off-the-shelf retrieval module followed by an answer re-ranking module. In this paper, we aim at improving the ranking performance of our system by finding the optimal approach to learning to rank. More specifically, we try to find ...

By looking at student achievement, the educator in evaluating whether teaching system used has been successfully accepted or not by students being taught. Online learning media using a technology approach that is more appropriate to today's systems than conservative method of class. In addition class ranking positions, there are also positions Parallel Class Ranking (RKP). The list RKP contains...