A Novel Concept-based Search for the Web of Data

As the size of Linked Open Data (LOD) increases, the search and access to the relevant LOD resources becomes more challenging. To overcome search difficulties, we propose a novel concept-based search mechanism for the Web of Data (WoD) based on UMBEL concept hierarchy and fuzzy-based retrieval model. The proposed search mechanism groups LOD resources with the same concepts to form categories, which is called concept lenses, for more efficient access to the WoD. To achieve concept-based search, we use UMBEL concept hierarchy for representing context of LOD resources. A semantic indexing model is applied for efficient representation of UMBEL concept descriptions and a novel fuzzy-based categorization algorithm is introduced for classification of LOD resources to UMBEL concepts. The proposed fuzzybased model was evaluated on a particular benchmark (~10,000 mappings). The evaluation results show that we can achieve highly acceptable categorization accuracy and perform better than the vector space model.