Introduction: The use of averaged topic-level scores can result in the loss of valuable data and can cause misinterpretation of the effectiveness of system performance. This study aims to use the scores of each document to evaluate document retrieval systems in a pairwise system evaluation. Method: The chosen evaluation metrics are document-level…

Describes an experiment that was designed to compare three different map displays used as a visual display for information retrieval by either a self-organizing algorithm or human subjects. Results indicate that the organization and visual appearance of map displays had a significant effect on subjects' searching and browsing on the map displays.…

Comparing variability of test scores across alternate forms, test conditions, or subpopulations is a fundamental problem in psychometrics. A confidence interval for a ratio of standard deviations is proposed that performs as well as the classic method with normal distributions and performs dramatically better with nonnormal distributions. A simple…

This study of 4,506 journal articles reveals that 4.4% of psychology article titles and 33.4% of mathematics article titles contained at least one eponym each (expression consisting of individuals's name plus word denoting idea associated with person). Twenty-two references, sample eponyms and citations, statistical tests, and source journals are…

Reports on a study that compared the behavior of two types of users (search specialists and subject matter specialists with no search experience) with two types of online information retrieval interfaces, including DIALOG. Highlights include data recording via transaction logs, structured interviews, and focus group discussions; and hypothesis…

Describes a study of 120 grade-6 students in Montreal that compared "Compton's Multimedia Encyclopedia" on CD-ROM with its print version to determine students' ability to recall information and to draw inferences from it. Presentation conditions, retrieval conditions, text characteristics, and future research plans are discussed.…

The Second International Conference on Educational Data Mining (EDM2009) was held at the University of Cordoba, Spain, on July 1-3, 2009. EDM brings together researchers from computer science, education, psychology, psychometrics, and statistics to analyze large data sets to answer educational research questions. The increase in instrumented…

The 7th International Conference on Education Data Mining held on July 4th-7th, 2014, at the Institute of Education, London, UK is the leading international forum for high-quality research that mines large data sets in order to answer educational research questions that shed light on the learning process. These data sets may come from the traces…