Method of providing selected content items to a user
First Claim
1. A method of providing selected content items to a user, comprising the steps of:
- A) identifying a first set of content items based on a request by the user, wherein first content metadata are pre-assigned to the content items of said first set;
B) automatically generating second content metadata for the content items of said first set on a basis of at least a first derivation rule, said derivation rule corresponding to an algorithm applied to at least the content items of said first set;
C) associating said second content metadata to the content items of said first set; and
D) providing a second set of selected content items from said first set on a basis of said first content metadata and said second content metadata,wherein step D) is carried out based on a user profile of the user comprising a predictive model, andwherein the method further comprises building the predictive model based on a feature vector and metadata, wherein the metadata comprises textual components and numerical components, and wherein the feature vector comprises metadata including at least one textual component from at least one of the first content metadata or the second content metadata,wherein in step D) a ranking to each of the content items of said first set is provided on a basis of said second content metadata and of said predictive model so as to define said second set of content items based on said ranking.
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Abstract
A method for providing selected content items to a user. The selection of content items is based on metadata pre-assigned to content items, typically authored content metadata, and on metadata generated and associated afterwards, called derived content metadata. Additionally, the selection of content items can be based also on context metadata, particularly derived context metadata. Derived metadata are automatically generated on the basis of derivation rules corresponding to algorithms to be applied to, e.g., the content of content items, authored content metadata and context metadata. User profiles can be used for improving the selection quality. A method is also disclosed for building and maintaining user profiles based on machine learning techniques.
24 Citations
19 Claims
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1. A method of providing selected content items to a user, comprising the steps of:
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A) identifying a first set of content items based on a request by the user, wherein first content metadata are pre-assigned to the content items of said first set; B) automatically generating second content metadata for the content items of said first set on a basis of at least a first derivation rule, said derivation rule corresponding to an algorithm applied to at least the content items of said first set; C) associating said second content metadata to the content items of said first set; and D) providing a second set of selected content items from said first set on a basis of said first content metadata and said second content metadata, wherein step D) is carried out based on a user profile of the user comprising a predictive model, and wherein the method further comprises building the predictive model based on a feature vector and metadata, wherein the metadata comprises textual components and numerical components, and wherein the feature vector comprises metadata including at least one textual component from at least one of the first content metadata or the second content metadata, wherein in step D) a ranking to each of the content items of said first set is provided on a basis of said second content metadata and of said predictive model so as to define said second set of content items based on said ranking. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for providing a content-based service comprising:
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collecting content requests from a user; identifying a first set of content items based on said content requests by the user, wherein first content metadata are pre-assigned to the content items of said first set; automatically generating second content metadata for the content items of said first set on a basis of at least a first derivation rule, said first derivation rule corresponding to an algorithm applied to at least the content items of said first set; associating said second content metadata to the content items of said first set; and providing a second set of selected content items from said first set on a basis of said first content metadata and said second content metadata, wherein providing the second set is carried out based on a user profile of the user comprising a predictive model, and wherein the method further comprises building the predictive model based on a feature vector and metadata, wherein the metadata comprises textual components and numerical components, and wherein the feature vector comprises metadata including at least one textual component from at least one of the first content metadata or the second content metadata, wherein providing the second set comprises providing a ranking to each of the content items of said first set on a basis of said second content metadata and of said predictive model so as to define said second set of content items based on said ranking.
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Specification