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 Berbahasa Indonesia Menggunakan Thesaurus
Abstrak: Query expansion is a common technique for fixed query in order to yield a better information retrieval result. Using a thesaurus is a way for fixed query. Thesaurus is a dictionary of words and terms which are collected and filtered by correlation of meaning of the word, like synonim, antonim, hyponim, and hypernim. This research is intended to analyze the effectivity of query expansion using thesaurus Global Analysis Method. There are a thousand agricultural documents and 93 medical plants documents. The research used Tf-Idf as a weighting method. The result of system performance which were used in this research is good with average precision of 53% for agricultural document and 76% for medical plants document using thesaurus query expansion. The maximal result that the thesaurus could gain is by using two-word length query. Query expansion method using thesaurus has a better result than the one using 2-language dictionary and pseudo relevance feedback document segmentation. The query length and the taking of some number of word group in thesaurus will affect the result of information retrieval.
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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