In a private information retrieval (PIR) system, the user needs to retrieve one of possible messages from set storage servers, but wishes keep identity requested message any given server. Existing efforts in this area have made it clear that efficiency will be impacted significantly by amount space allowed at servers. work, we consider tradeoff between cost and cost. We first present three fund...

purpose: the purpose of the present study is to investigate the image search and retrieval problems in selected search engines in relation to the persian writing style challenges. methodology: this study is an applied one. in orderto answer the questions an evaluative method and direct observation were used. the aim of the research is to explore the morphological and semantic problems of persia...

We have proposed a neural network model that stores the incoming information after orthogonalizing it in the same manner as vectors are orthogonalized. The scheme enables the brain to compare a new informational system with those in the memory and store its similarities and differences with the old memories in an economical manner. This allows the brain to have an enormous capacity and yet the ...