Abstract
Flexible query conditions could use linguistic terms described by fuzzy sets. The question is how to properly construct fuzzy sets for each linguistic term and apply an adequate aggregation function. For construction of fuzzy sets, the lowest value, the highest value of attribute and the distribution of data inside its domain are used. The logarithmic transformation of domains appears to be suitable. This way leads to a balanced distribution of tuples over fuzzy sets. In addition, users’ opinions about linguistic terms as well as current content in database are merged. The second investigated issue is selection of an adequate aggregation operator. Usual t-norm functions as well as compensatory γ – operator have been examined. Finally, the interface for managing these issues has been proposed. A user can obtain an overview about stored data before running a query; that may reduce empty or overabundant answers.
| Original language | English |
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| Title of host publication | 14th International Conference on Enterprise Information Systems (ICEIS 2012) |
| Number of pages | 6 |
| Place of Publication | Wroclav, Poland |
| Publication date | 2012 |
| Pages | 253-258 |
| ISBN (Print) | 978-989-8565-10-5 |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | Proceedings of the 14th International Conference on Enterprise Information Systems - Wroclaw, Poland Duration: 28 Jun 2012 → 1 Jul 2012 Conference number: 14 |
Conference
| Conference | Proceedings of the 14th International Conference on Enterprise Information Systems |
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| Number | 14 |
| Country/Territory | Poland |
| City | Wroclaw |
| Period | 28/06/2012 → 01/07/2012 |