Comparison for Three Internet Search Tools
نویسنده
چکیده
The objective of this project is to evaluate the usability and effectiveness of information retrieved by three Internet search tools: Yahoo, AltaVista, and Lycos. An 8x2x3 factorial experiment was conducted to compare the precision on relevance for the first ten retrieved links, the sensitivity d' and decision criterion bias beta for finding useful information, and subjective ranking for response time and interface output format. Three-way and two-way analysis of variance (ANOVA) and signal detection analysis (SDA) were used to analyse subjects' responses. The main findings were that there was no significant difference in precision for the retrieved references, and all these web search engines were sensitive to the query question and had significant effects on the sensitivity and the decision criterion. Among three Internet search engines, Yahoo was found to be most suited for current technology searching and obtained the highest score in all feature tests, followed by Lycos and then AltaVista.
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