Nec Corporation

Nec Usa, Inc.

Telecom Italia S.p.a.

Kasim Selcuk Candan

Wen-Syan Li

Fabrizio Antonelli

Dario Mana

Divyakant Agrawal

Rossana Simeoni

Marina Geymonat

Maria Luisa Sapino

Mario Cataldi

Luigi Di Caro

Various systems and methods are describe for determining dynamically generated content to be invalidated as a result of changes to underlying data. In one method, invalidation processing is performed using a delayed version of the database that reflects the state of the database at the beginning of a preceding processing cycle, and an update log that reflects all updates since the beginning of the preceding processing cycle. In another method, invalidation processing is performed by locking a database which is locked during processing so as to reflect the state of the database at the beginning of processing, and an update log that reflects all updates to the database since the beginning of the preceding processing cycle. In another method, invalidation processing uses the database while it is freely updated during said processing, and the update log of the database.

System and methods for invalidation to enable caching of dynamically generated content

A content delivery system having m servers, S'={S, . . . ,S}, n active customers, C&#x2032;={C, . . . , C}, and g geographic locations, G&#x2032;={G, . . . , G} is disclosed, wherein sdelis a server delay of server S, ndelis a network delay observed by customers in geographic location Gwhile retrieving content from server S, pis a priority value for customer C, cis a total load of customer Ci, uis a fraction of requests coming to customer Cfrom region G, ais a mapping representing a fraction of requests coming to customer Cfrom region Gthat have been redirected to server S, and srepresents a load capacity of server S. Within such a system, a method for distributing server loads includes the steps of representing an average prioritized observed response time as and then generating a mapping that assigns requests from customers to a particular server while minimizing AORT. A heuristic algorithm is used to generate the mapping, wherein large avalues are assigned to small u&#xd7;c&#xd7;(sdel+ndel) values to produce a smaller overall AORT value.

System and method for intelligent load distribution to minimize response time for web content access

Method and apparatus for intelligent network bandwidth and system resource utilization for web content fetch and refresh

A method for estimating an association between the media objects and the seed Web page accessed by a user. The method is employed in the context of a Web space on a network having Web pages and links between those Web pages modeled as a directed graph. Each Web page comprises a set of media objects and a page author. For each object a size, a user preference and a page author preference are determined. The network has an available pre-fetch bandwidth. The method calculates a weight for each Web object by applying preference rules defined by and user preference and page author preference to the contents of the set of media objects. Next, a random walk graph is generated, and object gains are calculated by finding a steady state distribution of the random walk graph. The object gain represents an association between the object and the seed Web page.

System and method employing random walks for mining web page associations and usage to optimize user-oriented web page refresh and pre-fetch scheduling

A computer implemented method for searching and retrieving images contained within a database of images in which both semantic and cognitive methodologies are utilized. The method accepts a semantic and cognitive description of an image to be searched from a user, and successively refines the search utilizing semantic and cognitive methodologies and then ranking the results for presentation to the user.

Semantic and cognition based image retrieval

Growing community of inventors

Tempe, AZ, United States of America

Kasim Selcuk Candan