In this paper,we study the problem of privacy-preserving top-k keyword similarity search over outsourced cloud data.Taking edit distance as a measure of similarity,we first build up the similarity keyword sets for all...In this paper,we study the problem of privacy-preserving top-k keyword similarity search over outsourced cloud data.Taking edit distance as a measure of similarity,we first build up the similarity keyword sets for all the keywords in the data collection.We then calculate the relevance scores of the elements in the similarity keyword sets by the widely used tf-idf theory.Leveraging both the similarity keyword sets and the relevance scores,we present a new secure and efficient treebased index structure for privacy-preserving top-k keyword similarity search.To prevent potential statistical attacks,we also introduce a two-server model to separate the association between the index structure and the data collection in cloud servers.Thorough analysis is given on the validity of search functionality and formal security proofs are presented for the privacy guarantee of our solution.Experimental results on real-world data sets further demonstrate the availability and efficiency of our solution.展开更多
Architectural artefacts form the identity of the cities, especially when these artifacts dated to historical times, it becomes more valuable. The importance of preserving the architectural heritage is more meaningful ...Architectural artefacts form the identity of the cities, especially when these artifacts dated to historical times, it becomes more valuable. The importance of preserving the architectural heritage is more meaningful when the building is preserved with its whole environment, with the other historical buildings around as a site protection. Preservation of historical monuments not only individually but also with their environments help the city regain its identity that it has lost. The Conservation Approach to Cultural Assets in Turkey has reached to its peek starting from 1985＇s through introducing the effects of the recent amendment on cultural heritage law and the impact of the EU integration process. The municipalities started to use this recent amendment on cultural heritage laws as a method of recovering their cities for the local identity searches. This paper will deal with the current challenges for conservation practice in Turkey, through introducing the effects of the recent amendment on cultural heritage law and the impact of the EU integration process, and examine some major promising conservation and renovation, rehabilitation projects continuing in Izmir the third biggest city of Turkey for which local solutions are being devised for problems of global context in the meaning of local identity searches for the city.展开更多
基金supported partly by the following funding agencies:the National Natural Science Foundation(No.61170274)the Innovative Research Groups of the National Natural Science Foundation(No.61121061)+1 种基金the National Key Basic Research Program of China (No.2011CB302506)Youth Scientific Research and Innovation Plan of Beijing University of Posts and Telecommunications(No. 2013RC1101)
文摘In this paper,we study the problem of privacy-preserving top-k keyword similarity search over outsourced cloud data.Taking edit distance as a measure of similarity,we first build up the similarity keyword sets for all the keywords in the data collection.We then calculate the relevance scores of the elements in the similarity keyword sets by the widely used tf-idf theory.Leveraging both the similarity keyword sets and the relevance scores,we present a new secure and efficient treebased index structure for privacy-preserving top-k keyword similarity search.To prevent potential statistical attacks,we also introduce a two-server model to separate the association between the index structure and the data collection in cloud servers.Thorough analysis is given on the validity of search functionality and formal security proofs are presented for the privacy guarantee of our solution.Experimental results on real-world data sets further demonstrate the availability and efficiency of our solution.
文摘Architectural artefacts form the identity of the cities, especially when these artifacts dated to historical times, it becomes more valuable. The importance of preserving the architectural heritage is more meaningful when the building is preserved with its whole environment, with the other historical buildings around as a site protection. Preservation of historical monuments not only individually but also with their environments help the city regain its identity that it has lost. The Conservation Approach to Cultural Assets in Turkey has reached to its peek starting from 1985＇s through introducing the effects of the recent amendment on cultural heritage law and the impact of the EU integration process. The municipalities started to use this recent amendment on cultural heritage laws as a method of recovering their cities for the local identity searches. This paper will deal with the current challenges for conservation practice in Turkey, through introducing the effects of the recent amendment on cultural heritage law and the impact of the EU integration process, and examine some major promising conservation and renovation, rehabilitation projects continuing in Izmir the third biggest city of Turkey for which local solutions are being devised for problems of global context in the meaning of local identity searches for the city.
