| Title |
A Work Item Matching Process Model for Using Historical Unit Prices |
| Authors |
Koo Kyo -J in ; Song Jong-Kwan ; Park Sung-Chul ; Park Sung Ho |
| Keywords |
Historical Unit Prices ; Similarity ; Matching Algorithm ; Unit Prices Update |
| Abstract |
For the purpose of improving the construction estimation standard, the Korean government has adopted the Estimate based on the Historical Cost Data(EbHCD). However, the industry have difficulty in utilizing the EbHCD in practice because technically supporting systems as well as institutional environment is not sufficiently developed: the codes of work items are not standardized, and the same work items are differently described at Bill of Quantities(BOQ). This study suggests work item matching process model to help users identically recognize work items with different expressions so that they could reuse historical unit costs from the previous projects. There are two main methodologies applied in this matching process model: ontology-based term matching and term-based similarity calculation. Then the developed model was validated by a case study of a office building and its BOQ. It is expected that the model systemizes and automates the current updating process of the unit cost so that it could help users utilize historical unit costs more easily and enhance the time and accuracy of estimation. |