مقايسه كارآمدي اصطلاحنامه و هستي‏شناسي در بازيابي مفاهيم موضوعي (مطالعه موردي اصطلاحنامه اصفا )

Thesaurus vs. Ontology: Comparison of the efficiency of Concepts Retrieval between ASFAOnt and ASFA

هدف: هستي شناسي ابزاري معناشناسي است كه با ارايه مفاهيم و روابط دقيق تعريف شده ميان آن ها، در يك حوزه علمي، تصويري از آن حوزه موضوعي ارايه مي‏دهد. هدف پژوهش حاضر، بررسي كارآمدي قابليت‏‏هاي هستي‏شناسي در مقايسه با اصطلاحنامه از نظر معيار بازيابي مفاهيم موضوعي است. روش: در اين پژوهش به منظور بررسي مهم ترين كاربردهاي هستي‌شناسي در فرآيند بازيابي مفاهيم، نمونه اوليه‌اي از هستي‌شناسي با عنوان ASFAOnt بر اساس مفاهيم حوزه «نمايه‌سازي» و با روش تحليل حوزه طراحي و ارايه گرديد و سپس در يك مطالعه «كاربردپذيري»، مقايسه‏اي ميان اصطلاحنامه‏ها و هستي‌شناسي از نظر معيار «بازيابي مفاهيم موضوعي» انجام پذيرفت. اين پژوهش از نوع كاربردي است و ابزارهاي گردآوري اطلاعات، پرسشنامه ساختار يافته با روش انتومتريك، روش بلند فكر كردن در حين جستجو و مصاحبه پس از انجام جستجو است. يافته‏ها: نتايج پژوهش نشان مي‏دهد ميزان كارآمدي هستي‌شناسي در بازيابي مفاهيم موضوعي، بيشتر از كارآمدي اصطلاحنامه اصفا است. همچنين رويكرد تحليل حوزه مي‏تواند به منظور طراحي ابزارهاي معنايي كارآمدتري در بازيابي مفاهيم موضوعي در مقايسه با اصطلاحنامه‌ها مورد استفاده قرار گيرد

Purpose: The aim of this research was to compare the capabilities of thesaurus vs ontology in retrieval of concepts.. Method: Through a domain analysis approach researchers developed a prototype ontology named ASFAOnt in the domain of Indexing by reengineering a current thesaurus in the Persian language named ASFA. The ontology was evaluated by retrieval tests in which the usability and the performance of the ontology were investigated. Usability and performance were compared with a baseline, a classic-type thesaurus with the conventional thesaurus structure, ASFA thesaurus. The evaluation was carried out as a controlled experiment in which a group of information searchers, LIS masters students, used the thesaurus and ontology to extract three keywords according to their search queries. The evaluative study was followed by a qualitative analysis of the nature of concepts, individual relationships and the textual and visual display. This technique provided an understanding of and insight into the quality of the ontology as well as to gather ideas for further development. In order to gather more validated data on users’ performance and satisfaction, thinking aloud technique was used. Also the experimental retrieval test in the usability test was followed by a questionnaire survey, constructed on the basis of ONTOMETRIC approach. Finding: Results of the study indicates that ontology structure is useful and provides valuable inspiration for the user. Providing enriched conceptual content and specific relationships have stimulated users to do more interaction with the ontology and to achieve more satisfaction with the applicability and potential of the ontology in comparison with the thesaurus in the traditional structure. We, also, developed a methodology of ontology construction by implementing domain analysis methodology