| 摘要 |
Methods and systems are described herein that involve handling of classification data in a search engine, where classification applies to data models, where attributes differ among the instances of an object type, or where the definitions of an object type's attributes are subject to frequent change. The search engine enables free-style queries and complex queries using Boolean operators. Further, the search engine incorporates algorithms to handle properties of an object type instance provided in the search query as if they were attributes of the object type's index.
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