Aggregate Functions in Categorical Data Skyline Search (CDSS) for Multi-keyword Document Search

Literature review is the first step in starting research for a deep understanding of interest. However, finding literature relevant to interests difficult and takes time. Skyline query method that can be used filtering. An object p said dominate q if equals on all its attributes, at least better than one attribute. Categorical Data Search (CDSS) an algorithm filter skyline objects categorical data types such as documents. CDSS uses Extended Distance Wu Palmer (DEWP) calculate distance between user document keywords. The keywords queries are represented nodes ACM CCS ontology, documents assumed by single keyword. This study aims use search more keyword adding aggregate function (average, minimum, maximum) algorithm, especially calculating DEWP. thesis from IPB University computer science department. Document will extracted using Term Frequency-Inverse Frequency (TF-IDF) method. collected mapped mixed ontology tree refers Association Computing Machinery Classification System 2012 (ACM 2012) Computer Science Ontology (CSO) standards science. determining Block Nested Loop (BNL). evaluation ratio each CDSS. Based value, maximum DEWP has most results compared average minimum