Judul: Algoritma Pohon Keputusan Pembelajar Mesin (Decision Tree of Machine Learning) dalam Mendeteksi Hutan Mangrove Menggunakan Citra SPOT 7
Abstrak: Tulisan ini menerangkan tentang pembangunan algoritma klasifikasi non-parametrik berbasis pohon keputusan dari pembelajar mesin dalam mengidentifikasi tutupan pada ekosistem mangrove menggunakan data penginderaan jauh dan data geospasial. Tujuan dari penelitian ini adalah untuk menemukan peubah (atribut) serta parameter algoritma pohon keputusan dalam mendeteksi dan mengidentifikasi tutupan hutan mangrove berbasis citra resolusi tinggi SPOT 7. Kajian ini menguji peubah-peubah geo-sosio-biofisik dan peubah spektral yang diturunkan dari citra SPOT 7. Penelitian ini menemukan bahwa peubah paling berpengaruh adalah elevasi dan NDVI. Penelitian ini juga menemukan parameter dari algoritma pohon keputusan terbaik adalah gain ratio tanpa kombinasi pemangkasan (pruning) dan pra-pangkas (prepruning), kedalaman pohon 31, alternatif prepruning 30, sampling data split dengan otomatis dan ukuran daun 61. Kombinasi tersebut menghasilkan overall accuracy (OA) sebesar 93.7% dan kappa accuracy (KA) 93.2%. Penelitian ini menyimpulkan bahwa peubah geo-sosio-biofisik lebih handal perannya dalam mengidentifikasi kelas-kelas tutupan lahan yang dibangun dibandingkan peubah indeks vegetasi., This paper describes the development of a decision tree machine learning, a non-parametric classification algorithm for identifying mangrove forest using remote sensing and geospatial data. The study objective is to find the decision tree algorithm's variables (attributes) and parameters in detecting mangrove forest cover based on SPOT 7 high-resolution imagery. This study examined geo-socio-biophysicalvariables and spectral variables derived from SPOT 7 imagery. This study also found that the best decision tree algorithm parameters were the gain ratio without a combination of pruning and pre-pruning, tree depth of 31, alternative prepruning 30, split data sampling with automatic, and leaf size of 41. The algorithm provided an overall accuracy (OA) of 93.7% and a Kappa accuracy (KA) of 93.2%. This study concludes that the geo-socio-biophysicalvariable is more reliable than vegetation index variables in identifying built-up land cover classes.
Keyword: indeks vegetasi, geo-sosio-biofisik, mesin pembelajar, pohon keputusan, decision tree, machine learning, geo-socio-biophysics, vegetation index

Judul: Aplikasi  Algoritma Pohon Keputusan Pembelajar Mesin (Decision Tree of Machine  Learning) dalam Deteksi Agroforestri Kakao: Studi Kasus Kecamatan Baebunta  dan Baebunta Selatan, Luwu Utara
Abstrak: Tulisan ini menjelaskan tentang pembangunan algoritma pohon keputusan dari pembelajar mesin menggunakan data penginderaan jauh dan data geospasial untuk mengidentifikasi tanaman kakao agroforestri dan kakao monokultur. Tujuan dari penelitian ini adalah untuk menentukan peubah, atribut, dan parameter dalam mengidentifikasi agroforestri kakao dan kakao monokultur menggunakan citra SPOT 7 dengan fitur indeks vegetasi dan parameter geo-sosio-biofisik menggunakan mesin pembelajaran pohon keputusan. Penelitian ini menemukan bahwa peubah yang paling berpengaruh adalah NDVI dan elevasi. Penelitian ini juga menemukan bahwa parameter yang paling berpengaruh adalah Information Gain dengan kombinasi tanpa pemangkasan (pruning), tanpa pra-pangkas (pre pruning), kedalaman pohon 51, pra-pangkas alternatif (pre-pruning alternative) 21, ukuran daun 21, dan jenis sampel yang digunakan adalah Random Sampling. Kajian ini menghasilkan nilai Overall Accuracy (OA) sebesar 93,56% dan Kappa Accuracy (KA) sebesar 92,9%. ATHALLAH SYAFIQ PADANTYA. Application of the Decision Tree of Machine Learning Algorithm in the Detection of Cocoa Agroforestry: a Case Study of Baebunta and South Baebunta Districts, North Luwu. Supervised by I NENGAH SURATI JAYA. This paper describes the development of a decision tree of machine learning algorithm using remote sensing data and geospatial data to identify agroforestry and monoculture cocoa plants. The purpose of this research is to determine variables, attributes, and parameters in identifying cocoa agroforestry and cocoa monoculture using SPOT 7 with vegetation index features and geo-socio-biophysical parameters using machine learning decision tree. This study found that the most influential variables were NDVI and elevation. This study also found that the most influential parameter was Information Gain with a combination of no pruning, no pre-pruning, tree depth of 51, pre-pruning alternative of 21, leaf size of 21, and the type of sample which is random sampling. This study resulted an Overall Accuracy (OA) value of 93,56% and a Kappa Accuracy (KA) value of 92,9%.
Keyword: indeks vegetasi, geo-sosio-biofisik, pohon keputusan, mesin pembelajar

Judul: Evaluation of Influenza Antibody Titers in Serum and Egg Yolk of Layers Vaccinated with Influenza Vaccines.
Abstrak: Influenza belongs to the Orthomyxoviridae family which causes upper and lower respiratory tract infection. The aim of this study was to evaluate influenza-A specific antibody titers from serum and egg yolk of hens vaccinated with quadrivalent influenza vaccines. Three Hy-line Brown layers were vaccinated with quadrivalent influenza type A and B inactivated vaccines. Vaccination was carried out three times at a dose of 0.25 ml/chicken via the intramuscular route. The first vaccination was carried out at 24 weeks of age, then boosters were performed at 28 and 32 weeks of age. Serum and egg yolk were collected every week for 20 weeks since the first vaccination. Influenza A H3N2 and H1N1 antibody titers were determined using hemagglutination-inhibition (HI) test and agar-gel-precipitation (AGP) test. Influenza-A H3N2 and H1N1 specific antibodies were detected in both serum and egg yolk from the first to twenty weeks after the initial vaccination. Highest HI geometric mean titer (GMT) of H1N1 antibody reached 26.67 HIU at nine weeks post first vaccination (p.f.v), while H3N2 antibody reached 26 HIU at six weeks p.f.v. Our result showed that influenza antibodies can be produced in layers using quadrivalent vaccines and layer chickens are able to produce equivalent antibody levels for each influenza subtype.
Keyword: antibody, egg yolk, influenza, layer chickens, serum