The set intersection problem is one of the main problems in document retrieval. Query consists of two keywords, and for each of keyword we have a sorted set of document IDs containing it. The goal is to retrieve the set of document IDs containing both keywords. We perform an experimental comparison of Galloping search and a new algorithm by Cohen and Porat (LATIN2010), which has a better theore...

We propose a P2P cooperation policy to increase the effectiveness of the flooding-based approach used to retrieve information over pure P2P networks. Flooding consists in propagating the original query from the source peer to “known” peers, and, in turn, to other peers, producing, in the general case, an exponential grow of the search traffic in the network. According to our policy, each peer i...

We present probabilistic models for use in detecting and tracking topics in broadcast news stories. Our information retrieval (IR) models are formally explained. The Topic Detection and Tracking (TDT) initiative is discussed. The application of probabilistic models to the topic detection and tracking tasks is developed, and enhancements are discussed. We discuss four variations of these models,...

background several studies showed that dopamine and norepinephrine improve retention and retrieval of memory. methylphenidate is an enhancer of dopamine and norepinephrine in brain. objectives in the present study, the effect of methylphenidate was evaluated on retention and retrieval of memory in young and aged mice using passive avoidance apparatus. materials and methods animals were divided ...

Background: The design of intensity modulated radiation therapy (IMRT) plans is difficult and time-consuming. The retrieval of similar IMRT plans from the IMRT plan dataset can effectively improve the quality and efficiency of IMRT plans and automate the design of IMRT planning. However, the large IMRT plans datasets will bring inefficient retrieval result. Materials and Methods: An intensity-m...

Abstract. The capability of time-lapse photography to retrieve snow depth time series was tested. Historically, has been measured manually by rulers, with a temporal resolution once per day, and it is time-consuming activity. In the last few decades, ultrasonic and/or optical sensors have developed obtain automatic regular measurements higher accuracy. Finnish Meteorological Institute Image Pro...

The rapid expansion of CubeSat constellations could revolutionize the way inland and nearshore coastal waters are monitored from space. This potential stems ability CubeSats to provide daily imagery with global coverage at meter-scale spatial resolution. In this study, we explore unique opportunity improve retrieval bathymetry offered by CubeSats, specifically those PlanetScope constellation. o...