Judul: Analisis kinerja sistem temu kembali informasi model P-Norm
Abstrak: Sistem temu kembali informasi mengolah sekumpulan dokumen dan query (permintaan pengguna) serta mengidentifIkasi dan mengambil dokumen-dokumen yang dianggap sesuai untuk diberikan kepada pengguna. Dokumen yang diberikan merupakan dokumen yang telah mengalami proses perbandingan. Dalam penelitian ini, model p-norm digunakan sebagai metode dalam proses perbandingan dokumen dengan query. Model ini merupakan model yang dapat memberikan sistem peringkat pada dokumen yang ditemukembalikan dan memperbaiki temu kembali infomasi yang menggunakan model Boolean.
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Judul: PUTRA. Extended Boolean Model on Retrieval Using P-Norm Model and Belief Revision
Abstrak: Extended Boolean Model is introduced to intermediate between the Boolean system of query processing and the vector-processing model. The query structure inherent in the Boolean system is preserved, while at the same time weighted term may be incorporated into both queries and stored documents. The retrieved output can also be ranked in strict similarity order with the user queries. Belief Revision is a logical framework in which documents and queries are represented by propositional formulas. Disjunctive Normal Form (DNF) is used to represent documents and queries in the Belief Revision. The purpose of this research is to implement Extended Boolean Model using P-Norm Model and Belief Revision for documents in Bahasa Indonesia. This testing used 30 queries from a thousand agricultural documents and 13 queries from 93 medicinal plants documents. The test result shows that the use of medicinal plants documents is better than agricultural documents. This is due to agricultural documents which have a high similarity between documents. The performance of information retrieval with P-Norm Model and Belief Revision gave good result which is around 81% average precision for medicinal plants documents and 54% for agricultural documents.
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Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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