Sadegh Kharazmi

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It has been previously observed that optimization of the 1-call@k relevance objective (i.e., a set-based objective that is 1 if at least one document is relevant, otherwise 0) empirically correlates with diverse retrieval. In this paper, we proceed one step further and show theoretically that greedily optimizing expected 1-call@k w.r.t. a latent subtopic(More)
We investigate the application of a light-weight approach to result list clustering for the purposes of diversifying search results. We introduce a novel post-retrieval approach, which is independent of external information or even the full-text content of retrieved documents; only the retrieval score of a document is used. Our experiments show that this(More)
All enterprises require EA in order to use its benefits, but it is crucial for this project to be applied with formal stakeholderspsila satisfaction. A suitable framework for the enterprise requirements can be planned by the use of agile methods and its practices, in which we cannot only increase the percentage of prosperity but also we can return the asset(More)
We describe Hugo -- a service initially available on iOS that solicits a structured, semantic query and returns entity-specific news articles. Retrieval is powered by a semantic annotation pipeline that includes named entity linking and automatic summarisation. Search and entity linking use an in-house knowledge base initialised with Wikipedia data and(More)
We present a study of which baseline to use when testing a new retrieval technique. In contrast to past work, we show that measuring a statistically significant improvement over a weak baseline is not a good predictor of whether a similar improvement will be measured on a strong baseline. Sometimes strong baselines are made worse when a new technique is(More)
Progressive use of Web based information retrieval systems such as general purpose search engines and dynamic nature of the Web make it necessary to continually maintain Web based information retrieval systems. Crawlers facilitate this process by following hyperlinks in Web pages to automatically download new and updated Web pages. Freshness (recency) is(More)
Due to software production dominance development among all structures and information exchange growth among systems, Utilizing a suitable method for correct connection among information systems is important and worth to consider. At first look, work dependence to technology was more than business because of production variety. As business processes have(More)
Increasing workload on multi-user database management system (DBMS) can cause maximum system's throughput. With further increase of workload, throughput dramatically decreases and system performance fall down; then system starts to thrash. Existence of an admission control component for managing user's requests is necessary. Admission control component in(More)