Judul: Pembentukan Passage dalam Question Answering System untuk Dokumen Bahasa Indonesia
Abstrak: Indonesia. Supervised by AHMAD RIDHA. Passages are used by question answering system to get pieces of relevant documents. This research compared various aspects of passages: overlapping and non-overlapping passages, sentencebased and word-based passages, and passage formation time (before and after indexing). Types of question in this research are siapa (who), di mana (where), kapan (when), and berapa (how many). For indexing and retrieval process, we used BM25 and proximity algorithms from Sphinx. Top documents or passages were re-weighted using rules to get passages containing answers candidate. Answer extraction was performed using the smallest distance between query and candidate answers. Evaluation was conducted using mean reciprocal rank and answer accuracy (four criteria: Right, Unsupported, Wrong, and Null). The best result was obtained using BM25 for two kinds of passage, namely, 20 overlapping words with 80% accuracy and 30 overlapping words with 77.5% accuracy, where both considered one tag as one word and were formed after indexing. The best result for proximity were obtained three kinds of passages, namely, 2 overlapping sentences with 77.5% accuracy, 2 non-overlapping sentences with 77.5% accuracy, and 20 overlapping words with 77.5% accuracy, they also considered one tag as one word and were formed after indexing. The average performance based on mean reciprocal rank for passage by using BM25 and Proximity are 75.1% and 76.1%, respectively. The passages formed after indexing have better accuracy which indicates retrieving relevant documents is important for question answering system.
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Judul: Implementation of Question Answering System for Document in Bahasa Indonesia with List Question
Abstrak: In the last few years, many studies of Question Answering System (QAS) have been conducted by a number of research groups around the world. Lately, a question is not only presented in the form of factoid questions, but also as a list questions where a question requires more than a single-entity of answer. However, recent development on QAS can only accommodate factoid questions which only require a single-entity's answer. To address this issue, the purpose of this research is to implement QAS for list questions. In order to obtain candidate of answers, heuristic weighting is performed in the passage which is contained on the top n documents. One thousand documents and 40 queries are used in the experiment. The best results of experiment show correctness of 26%, 39%, 36.33% and 70 % for "who", "how many/much", "where" and "when" list questions, respectively.
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Judul: Parasitemia dan gambaran darah mencit yang diinfeksi Trypanosoma evansi setelah pemberian partikel nano logam kobalt
Abstrak: Kobalt adalah mineral yang penting untuk maturasi eritrosit dan menstimulasi eritropoiesis. Trypanosomias merupakan penyakit yang menyerang hewan ternak dan hewan domestik yang disebabkan oleh Trypanosoma evansi (T. evansi). T. evansi dapat menginduksi kerapuhan eritrosit dan anemia. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian nano logam Co pada mencit yang diinfeksi T. evansi. Penelitian ini menggunakan mencit jantan dewasa berumur ± 10 minggu yang dibagi 5 kelompok perlakuan yaitu kelompok kontrol infeksi (KP), kelompok kontrol non infeksi (KN) dan kelompok yang diinfeksi T. evansi dan dosis logam bertingkat (Co 190 mg/kg bobot badan (D1), 380 mg/kg bobot badan (D2), dan 760 mg/kg bobot badan (D3). Parameter yang diamati adalah, persentase parasitemia, nilai PCV, kadar Co dalam darah, dan mortalitas. Tingkat parasitemia D1 lebih tinggi secara nyata dibandingkan dengan KN (p<0.05). Terjadi penurunan pada nilai PCV pada semua perlakuan yang diinfeksi T. evansi. Adapun kadar Co dalam darah mengalami fluktuasi dari hari ke-0 sampai hari ke-7. Kematian terjadi pada hari ke-7 pada hewan coba D1, sedangkan D2 dan D3 telah menyebabkan kematian hewan coba dari hari ke-4. Penelitian ini menunjukkan pemberian nano logam Co belum memberikan efek anti T. evansi. Penelitian efektifitas Co terhadap T. evansi dengan formulasi lain dapat dilakukan lebih lanjut.
Keyword: Cobalt, Nano metal, Surra, Trypanosoma evansi, Trace element