google scholar is a specialized search engine that provides which of the following?

In assessment situations where evaluators can be compared to a gold standard, Relevance Similarity provides an alternative evaluation technique to the commonly used kappa scores, which may give paradoxically low scores in highly biased situations such as document repositories containing large quantities of relevant data. The performance of the retrieval system was not significantly different as a result of the variations in relevance assessment in this particular query set. The similarity comparison among groups showed that a higher degree of agreements exists among evaluators with more subject knowledge. Their assessments were compared to the gold standard assessment, and Relevance Similarities were calculated as the ratio of positive concordance with the gold standard for each topic. They assessed the relevance of retrieved topics obtained by querying a meta-search engine with ten keywords related to medical science. Twelve volunteers were divided into two groups of people according to their domain knowledge.

The study was carried out on a collection of Critically Appraised Topics (CATs). In such a setting, Relevance Similarity is the ratio of assessors who rank a given document same as the gold standard over the total number of assessors in the group. In a situation where individual assessment can be compared with a gold standard, this parameter is used to study the effect of such variation on the performance of a medical information retrieval system. The work presented here introduces a new parameter, 'Relevance Similarity', for the measurement of the variation of relevance assessment. Relevance assessment is a major problem in the evaluation of information retrieval systems.

Google scholar is a specialized search engine that provides which of the following?