In this paper, we explain the detail analysis procedure of submission 1(Previous predicted results submission) of Task A1. We are trying to induce decision tree models to predict pc:numberOfTenders. Since the type of target attribute is non-negative integer value, we use the variance reduction as the at-tribute selection criteria. Input attributes are defined based on structure infor-mation of Public Contracts Ontology. We use the description logic constructors to properly represent a meaning of structure information of training data. Among all instances of the contract class, we make 10 different input data sets through random sampling method. The procedure of decision tree learning is performed by using SAS E-miner, and attribute selection criteria is variance re-duction. Final prediction results of test data are the average of selected decision tree models except few models which have extremely low R-Square value.
|CEUR Workshop Proceedings
|Published - 2014
|3rd International Workshop on Knowledge Discovery and Data Mining Meets Linked Open Data, Know@LOD 2014, Co-located with 11th Extended Semantic Web Conference, ESWC 2014 - Crete, Greece
Duration: 2014 May 25 → …
All Science Journal Classification (ASJC) codes
- Computer Science(all)