Hewlett-packard Development Company, L.p.

Chunqiang Tang

Zhichen Xu

Mallik Mahalingam

Sung-Ju Lee

Sujata Banerjee

Zhiheng Wang

Christos Karamanolis

Magnus Karlsson

Services are provided via a multicast tree. A request to receive a service is received at a node. Stored information at the node is searched to identify a service path or a service node operable to provide the requested service.

Requesting a service from a multicast network

A multicast tree is provided in an application multicast network. A child node in the multicast tree detects a degradation of quality of service associated with a service being received at the child node. The child node determines whether the degradation of quality of service is resulting from a child-parent link or an upstream link in the multicast tree.

Reconfiguring a multicast tree

A data model represents semantic information associated with objects stored in a file system. The data model includes a first object identifier, a second object identifier and a relation identifier. The first object identifier identifies a first object stored in the file system. The second object identifier identifies a second object stored in the file system, wherein the second object is related to the first object. The relation identifier identifies a relationship between the first object and the second object.

Semantic file system

An overlay network is used to logically represent an underlying physical network. A network condition is monitored by a node in a target region of the network. If the network condition occurs, the node transmits a notification to a source node including location information for nodes physically close in the physical network. The source node may select a routing node in the target region based on the location information.

Providing a notification including location information for nodes in an overlay network

A distributed file system includes a plurality of nodes storing objects; an extractor and a semantic catalogue. The extractor extracts semantic information for the objects. The semantic catalogue includes the semantic information for the objects and may be stored by the plurality of nodes.

Semantic-based system including semantic vectors

In a method of improving querying, a plurality of items of information are transformed into a plurality of vectors, where each item of information of the plurality of items of information is mapped to a respective vector of said plurality of vectors. A plurality of vectors is associated with a subset of nodes selected from a plurality of nodes. Each vector associated with a respective node of said plurality of nodes is based on a similarity between each vector of said plurality of vectors.

Method and apparatus for improving querying

In a method of semantic querying in a peer-to-peer network, an item of information is mapped into a semantic vector based on the latent semantic indexing algorithm or any IR algorithms that can derive a vector representation. The semantic vector is associated with an address index as a key pair. The key pair is stored in an overlay network formed from the peer-to-peer network such that the stored key pair is proximally located to at least one other key pair having a similar semantic vector.

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Rochester, NY, United States of America

Chunqiang Tang