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Situation management systems are developing quickly nowadays. Among their vast applications, disaster management, homeland security and traffic management are of the most important ones. In domains above, the locations of people inside the observed areas are great sources of information. While we can put the accuracy of the location information first in(More)
Together with the rapid development of location-based services (LBS), the problem of privacy-preserving has gained much attention. Many techniques aiming at protecting user's privacy have been introduced such as obfuscation-based technique, <i>k</i>-anonymity. Although existing solutions integrate location privacy protection algorithms into the indexed(More)
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