At the University of Art and Design Helsinki, the objective of the CIPHER project is to develop resource organization tools that empower communities of interest to search, explore, and discover cultural heritage knowledge.
These include resource organization and navigation and exploration instruments based on the ability of self-organizing maps to cluster and visualize forum content. |
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| Soft Ontology Layer SOL |
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Ontology can be defined as a formal, explicit description of concepts in a domain of discourse. An Ontology is built through descriptions of artifacts[1] and their properties[2].
SOL makes use of soft ontologies - which are low-level, non-hierarchical and spatially defined descriptions - to allow the user to create a descriptive, interpretive layer of an artifact. The name relates to the fact that the resulting ontology is the product of properties entered using natural language and without the need of rigid, hierarchical grouping.
Using SOL the ontology is described, analyzed, mapped to some numerical form and translated into a graphical representation. With a neural network algorithm, Self-Organizing map, SOL clusters the artifacts in an unsupervised fashion and generates a visual representation of the clusters, providing a topological structure and placing similar artifacts in neighbouring clusters.
[1] An artifact is any item, conceptual or material, created by a human being.
[2] A property is a feature or an attribute of an artifact.
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SOL [requires password] |
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| Automatic Description Engine ADE |
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A document refers to a piece of textual historical information and a collection documents refers to a set of documents.
ADE allows for large amounts of textual collections to be processed into the proper numerical representation and displaying similarity clusters that can be seen as classes emerging from statistical correlations.
Clustering documents automatically can be done organizing text objects into a semantic structure taking advantage of implicit higher-order structure in the association of terms with documents.
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