Food security in Indonesia at national level, is considered as adequate, when seen from the side of availibility but the level of poverty is still high. It means that even the national food availability is abundant, but it can not be accessed by all residents at household level. Therefore, food security situation should be constantly monitored. one method to identify and provide food security situation data / information is establishment of food security index. This research has an objective to

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... design instrument (a software) Decision Support System (DSS) to define food security index in household and region level. DSS for defining food security index needs to be done, so that there is a computer-based information system program that can be used to process and present data better, as a reference for policy makers on food security issues. The program is designed using a desktop-based software. It integrated the dialog subsystem, models subsystem, database subsystems and knowledge components subsystem. The data was collected at Srimartani village, Piyungan district, Bantul Regency, D.I. Yogyakarta Province, applying survey and interview methods in designing database. The dynamically designed program indicated that DSS program for food security index in household and region level can be used as an instrument to identify and give food security situation on a regular basis information. The information can be shown in the form of indexes and categories, as well as maps. according to the food security index result analysis for the household level of Sample Village, there were 1 sub-village in food insecurity, 6 sub-village in food vulnerable; and 10 sub-village in food security status. according to food insecurity index of the region level, food security level of Srimartani Village can be categorized as good enough, which was shown by index value 0,48. It means that all subvillage in Srimartani Village was categorized as secure enough, secure, and very secure. Based on this result analysis, according to the knowledge ba [...]