%A NIM. 09140111 UMI HANIATI %T EFEKTIVITAS OPAC PERPUSTAKAAN STIKES AHMAD YANI YOGYAKARTA (TINJAUAN RECALL DAN PRECISION DENGAN PENDEKATAN JUDUL DAN SUBJEK) %X This study aimed to find out effectiveness on the library OPAC STIKES Ahmad Yani in Yogyakarta refer to recall and precision differences between search title and subject approach. This research was a laboratory experiment used quantitative methods. The subjects in this study was contained in the database collection record on the library OPAC STIKES Ahmad Yani Yogyakarta, while the object was library OPAC STIKES Ahmad Yani Yogyakarta. Method of data collection used observation, testing, documentation, and interviews. The results showed that the total recall and precision on the retrieval system of OPAC STIKES Ahmad Yani Yogyakarta Library by a point in the title search to acquired recall value of 88.73% and precision value of 96%. While through the search subject recall value of 65.09% and 90.3% precision. Value of recall and precision on the library OPAC STIKES Ahmad Yani Yogyakarta, inferential that effective succeded as the information retrieval systems. Information retrieval system in the OPAC STIKES Ahmad Yani Yogyakarta had better use of “advanced search” by a point title search, because this point can netted of collection on the strength of title and subject, while a point subject search cannot netted collection on the strength of title. Keywords: Recall and precision, OPAC retrieval, Library. %D 2013 %K Recall and precision, OPAC retrieval, Library. %I UIN SUNAN KALIJAGA %L digilib7962