Judul: Temu Kembali Informasi Pada Tag ID3 File MPEG Layer-3 (MP3)
Abstrak: Searching song based on text data was easily done, but it wasn’t happen if the searching process refers to file info on ID3. Almost all of web-based retrieval only relies on data from database or filename. It causes difficulties in searching audio files on the internet. This research implements an information retrieval system that can search on the ID3 of MP3 files and evaluates the system performance on returning relevant answers. This research uses 182 MP3 file consists of various sizes and genre Indonesian songs as data test and 5 queries. On this research both lyrics and queries have been stemmed using Kamus Besar Bahasa Indonesia (KBBI) stemmer. The tf.idf weighting and sum of tf.idf are used for returning the result. The sum of tf.idf is based-on standard tf.idf that sum of each keyword on the query. Analysis of the results is conducted by several k-top documents. The result shows that information retrieval on the ID3 MP3 files can be done and the result using stemmer is better than that of without stemmer. MAP value where k = 10 with stemmer is 0.27, whereas without using stemmer is 0.25. For the next k, where k = 15 with stemmer the MAP value is 0.39, while without using stemmer 0.19, last with k = 20, the value of MAP with using stemmer is 0.62, while without using stemmer is 0.15 . The MAP values show that using stemmer is better than the MAP without stemmer, it’s because the use of stemmer can reduce the term variation in order to increase the recall value.
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Judul: Studi Komparatif Pembobotan Kata untuk Temu Kembali Informasi Dokumen Bahasa Indonesia
Abstrak: One of the classical models of Information Retrieval (IR) systems is the vector space model. Vector in this model represents the weight of terms contained in the documents and queries. A term can be a word, a phrase, or a unit in a document describing the context of the document. Since each term has a different level of importance in the document, weighting is needed. The commonly used weighting method is TF-IDF (Term Frequency Inverse Document Frequency). Previous research indicates that the distribution of term weighting follow the Poisson distribution, hence a method called RIDF (Residual Inverse Document Frequency) was developed. Other weighting methods by considering the query is called Query Term weighting. Both of the latter methods has not been implemented for documents in Indonesian. This research implements the methods TF-IDF, RIDF and Query Term Weighting on search engine for documents in Indonesian. The result of this research is a search engine with an average precision of 63,9%.
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Judul: Kemampuan Tanggap Kebal Ayam Petelur yang Divaksinasi dengan Vaksin Aktif Newcastle Disease Strain LaSota Terhadap Paparan Virus Newcastle Disease Gen VII
Abstrak: The objectives of this study were to determine the immune response of vaccinated layer with Newcastle Disease strain Lasota active vaccine against challenged by Newcastle Disease Gen VII and to observe clinical signs and pathology anatomy lesions of challenged chickens. Fourty commercial layer were used in this study and divided into four groups K1, K2, K3, K4 each group consisted of 10 chickens. Group K1 and K2 were unvaccinated and group K3 and K4 were vaccinated. Group K2 and K4 were challenged using Newcastle Disease Gen VII. Chickens were vaccinated at 3 rd weeks and challenge at 5th weeks (2 weeks post vaccination), with dose 104 CLD50/chicken, through oral. ND antibody titer were determined by Hemagglutination Inhibition (HI) test. The result showed that groups K1 and K2 have low level antibody compared to groups K3 and K4. Group K2 shows diarrhea clinical sign that causes death to all the chickens. Group K4 has antibody 22.5. Our result showed that ND LaSota could induce immune response against challenge by ND gen VII also reduced mortality and clinical sign.
Keyword: Gen VII, HI test, LaSota, Layer, Newcastle Disease, Vaccine