Judul: Pengembangan Sistem Penerjemah Kata dan Frasa Bahasa Inggris Menjadi Bahasa Indonesia dengan Model Peluang Bersyarat Bayes
Abstrak: Sistem penerjemah dapat dikembangkan dengan beberapa pendekatan di antaranya, rule-based, dictionary-based, statistical, example-based, dan hybrid. Penelitian ini mengembangkan sistem penerjemah Bahasa Inggris – Bahasa Indonesia menggunakan metode korpus paralel dengan pendekatan statistik. Pendekatan statistik yang digunakan adalah phrase-based model dengan peluang bersyarat Bayes. Model peluang bersyarat Bayes digunakan untuk mengetahui peluang kemunculan bersyarat dari query dua kata. Hasil penelitian menunjukkan bahwa metode Statistical Machine Translation dengan pendekatan phrase-based dapat diterapkan untuk pembangkitan kamus Bahasa Inggris ke Bahasa Indonesia. Hasil Mean Average Precision (MAP) untuk query satu kata adalah 0.787, sedangkan hasil MAP untuk query berupa frasa adalah 0.900. Hal ini terjadi karena pembobotan yang dilakukan hanya menggunakan frekuensi kemunculan kata.
Keyword: Bayes conditional probabilitistic model, mean average precision, parallel corpus, statistical machine translation, translator system.

Judul: Pengembangan sistem koreksi frasa bahasa indonesia berbasis konteks
Abstrak: This research proposes a new method, phrase pair together with opportunity value to give a proposed word as a correction result. Conditional probability formula is used to determine the value of opportunities of each phrase pair. Formation of phrase in this study is determined among words that are in a sentence and considered to have similar contexts. The corpus used consist of 2000 documents originating from the Laboratory of Information Retrieval, Department Computer Science, Bogor Agricultural University. Processing of document produces 90,077 pairs of phrases together with the opportunity values. Testing of this correction system uses two types of queries (common query and specific query) and two type of errors (context error and Damerau error). The context based correction system is appropriate to implement on the type of specific query. Accuracy values produced by system are 60% on spesific query and 56.67% on spesific query with context error and Damerau error. Restriction of system by giving 10 proposed words causing there is a correct proposed word but which is not included in 10 proposed words. The solution is by increasing the proposed word produced by the system. In common query, the system has poor performance. The poor accuracy emerges due to the lack of method in determination of correcting word, there are pair phrases that have high opportunity value but do not have similar context and are not included in Big Dictionary of Indonesian (KBBI) and there are pair phrases that have similar context but have low opportunity value.
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Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4