Abstract: Embodiments of the present disclosure provide a method and device for processing objects to be searched. The method comprises: receiviug a first input indicating a constraint associated with an object; receiving a second input indicating a category to which the object belong; and establishing, based on the first input and the second input, a classification condition associating the constraint with the category as a part of a classification policy which is used for classifying the object into a category to create a search index. In addition, embodiments of the present disclosure further disclose a method and device for creating a search index for an object to be searched.

Abstract: Various embodiments of the present disclosure provide a solution for category-based full-text searching. In some embodiments, there is provided a method of full-text searching. The method includes generating a first full-text index based on an obtained electronic document content. The method also includes categorizing the electronic document to determine a category identifier for the electronic document, and generating a second full-text index based on the category identifier. The method further includes storing the first full-text index and the second full-text index.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for determining a similar document set to a target document from a plurality of documents. Each of the multiple documents and the target document may include a plurality of words, and each of words corresponds to a different integer. The method comprises: for each document among the plurality of documents and the target document, obtaining a set of integers associated with a document based on a set of words associated with the document, converting the set of integers associated with the document into a vector with a same dimension based on a predefined conversion rule; and determining the similar document set based on differences between the corresponding vectors for the multiple documents and the vector for the target document.