Judul: Modul Extract, Transform, Dan Load Untuk Data Warehouse Tanaman Hortikultura Menggunakan Kettle
Abstrak: Kualitas data, kompleksitas sumber data, hubungan dalam data, logging, kepakaran internal, dukungan, ruang penyimpanan dan penjadwalan merupakan faktor-faktor yang mempengaruhi kualitas data warehouse. Proses extraction, transformation, dan loading (ETL) merupakan penghubung antara sumber data dan data warehouse yang bertujuan untuk meningkatkan kualitas data warehouse. Proses ETL pada data berukuran besar jika dilakukan secara manual merupakan cara yang tidak efisien karena variasi data dari sumber data yang berbeda-beda akan membutuhkan waktu yang lama. Efisiensi waktu, sumber daya, dan biaya dalam implementasi data warehouse membutuhkan tool yang dapat melakukan proses ETL secara otomatis. Penelitian ini membuat modul ETL untuk data warehouse tanaman hortikultura dengan menggunakan Kettle. Data yang digunakan dalam penelitian ini adalah data tanaman hortikultura di Indonesia dari tahun 1960 sampai tahun 2014. Hasil penelitian ini berupa modul ETL berupa fail transformation dan job serta data warehouse tanaman hortikultura. Penelitian ini melakukan 2 pengujian yaitu pengujian ETL dan pengujian data warehouse.
Keyword: Data warehouse, ETL, Kettle, tanaman hortikultura

Judul: Modul Extract, Transform, Load (ETL) untuk Data Warehouse Akademik Departemen Ilmu Komputer IPB Menggunakan Kettle
Abstrak: Extraction, transformation, and loading (ETL) are processes which have important role to determine data warehouse quality. ETL is bridging between data source and data warehouse. Activities such as cleaning, integration, and data loading at data were done in this process. Making ETL manually is inefficient, because data that will grow and data with different sources become problematic in data integration. This research performs ETL using special tools that are expected to simplified the ETL process and consistently of data output. ETL tool which used are Kettle, while designing a data warehouse using Pentaho Schema Workbench and result are visualized in OLAP in Mondrian to test the ETL process. The result in this research is a data warehouse having integrated and dynamic ETL.
Keyword: Bogor Agricultural University (IPB), pentaho schema workbench, mondrian, kettle, ETL, data warehouse

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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