Judul: Ekspansi Kueri pada Sistem Temu Kembali Informasi dengan Tesaurus dan Pendekatan Boolean
Abstrak: This research implements and evaluates the implementation of automatic query expansion with synonyms and antonyms derived from thesaurus with boolean approach. The research was conducted because query expansion in the previous research by Pancawan using intersection weight required a long time. This research used 2095 documents and 30 queries. Using one synonym produced the best performance with an average F1 of 0.06376 in average time of query expansion 5.256 seconds, while the previous research produced an average F1 of 0.06385 in 23.451 seconds. Using one antonym on this and previous research produced the same average F1 of 0.06651. However, the average time required for the query expansion in this research was 1.916 seconds, only half of the previous research that took 4.890 seconds. From the evaluation result of the document retrieval comparison, this research obtained a similar performance in less time.
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Judul: Ekspansi Kueri pada Sistem Temu Kembali Informasi dengan Tesaurus dan Bobot Irisan
Abstrak: Query expansion is a technique to change the intial query from user in order to improve and optimize result of a retrieval system by getting more relevant documents. Thesaurus is a collection of synonyms and antonyms that can be utilized to get additional terms in query expansion. We propose a method to choose additional terms for query expansion based on insersection betweeen results from original query and results from expanded query. We experiment with synonyms and antonyms using 2095 documents and 20 queries that we made for this research. To make these queries, we use words that are generally different from the words that are contained in the document collection. The result of this research shows that the use of query expansion can improve the performance of the retrieval system in getting more relevant documents. It also shows that the use of two synonym terms result in the best query expansion, retrieving 98.1% relevant documents with an average precision of 0.252, while the use of an antonym is only able to retrieve 86.9% relevant documents with an average precision of 0.173.
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Judul: Patologi penyakit mikotik granulomatosis pada ikan sepat labiosa (Colisa labiosa) dari distributor ikan hias Bogor
Abstrak: Lesio mikotik granulomatosis yang disebabkan oleh cendawan golongan Oomycetes, Aphanomyces invadans ditemukan pada ikan sepat labiosa (Colisa labiosa) yang berasal dari distributor ikan hias Ciluar, Bogor. Aphanomyces invadans dilaporkan sebagai patogen utama yang menyebabkan penyakit epizootik di 24 negara pada empat benua yang disebut sebagai Epizootic Ulcerative Syndrome (EUS). Kulit ikan sepat labiosa pada kasus ini tampak ditumbuhi oleh massa kapang air yang menyerupai kapas. Di bawah massa kapang ditemukan luka terbuka yang memberikan warna merah kelabu pada kapang Pada pengamatan histopatologi ditemukan hifa aseptat basofilik pada kulit, tot, hati, serosa, dan medulla spinalis yang diselubungi oleh sel epiteloid membentuk lesio granulomata. Kajian secara histopatologi mengindikasikan bahwa kan sepat labiosa dari Ciluar, Bogor merupakan ikan yang peka terhadap infeks Aphanomyces invadans. Kata Kunci: Aphanomyces invadans, Colisa labiosa, Epizootic Ulcerative Syndrome, Mikotik Granulomatosis
Keyword: Aphanomyces invadans, Colisa labiosa, Epizootic Ulcerative Syndrome, Mycotic Granulomatosis