SBUEI: results for OAEI 2012

In this paper, we describe our system, SBUEI, for instances coreference resolution between various sources even with heterogeneous schemas. It is the first participation of SBUEI in instance matching track of Ontology Alignment Evaluation Initiative campaign. We present the results of SBUEI in the 2012 OAEI competition in two tracks: Sandbox and IIMB. SBUEI considers the instance coreference resolution in both schema and instance levels. The process of matching is applied to both levels consecutively to let the system discover identical instances. 1 Presentation of the system Linked data resources have influential roles in conducting the future of semantic web. In recent years, different data providers have produced many data sources in Linking Open Data (LOD) cloud upon different schemas. Increases in the amount of linked data in LOD is not the only challenge of publishing linked data; rather, matching and linking the linked data resources are also equally important. The fourth rule of publishing linked data in [1] explains the necessity of linking URIs to each other. In the web of linked data, there are obviously many different kinds of schemas in various linked data resources. Therefore, we confront with schema heterogeneity in order to do coreference resolution. The importance of this issue motivated us to create a new system, SBUEI, for entity coreference resolution. SBUEI deals with the both problems of instance matching and schema matching. SBUEI proposes an interleaving of instance and schema matching steps to find coreferences or unique identities in two sources. This approach is applicable to find unique identities in two linked data sources. SBUEI, unlike systems such as [2, 3, 4] which uses just instance matchingor systems such as [5, 6] -which use just schema matchingexploits both levels of instance and schema matching. The main difference between SBUEI and other systems like [7], which exploit both levels, is that SBUEI exploits an interleaving of them while [7] exploits them sequentially one after the other (starts instance matching after completing schema matching). SBUEI utilizes schema matching results in instance matching and use the instance matching results in order to direct matching in schema level. SBUEI also has a new approach for instance matching.