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An information retrieval process begins when a user enters a query into the system. Queries are formal statements of information needs, for example search strings in web search engines. In information retrieval a query does not uniquely identify a single object in the collection. Instead, several objects may match the query, perhaps with different degrees of relevancy.
An object is an entity that is represented by information in a database. User queries are matched against the database information. Depending on the application the data objects may be, for example, text documents, images,[6] audio,[7] mind maps[8] or videos. Often the documents themselves are not kept or stored directly in the IR system, but are instead represented in the system by document surrogates or metadata.
Most IR systems compute a numeric score on how well each object in the database match the query, and rank the objects according to this value. The top ranking objects are then shown to the user. The process may then be iterated if the user wishes to refine the query.[9]
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Rafa
BeauIN REAL TIME SYSTEM THE OUTPUT HAS COME IN QUICK RESPONSE. WHEN THE USER ENTER HIS QUERY THEN THE OUTPUT COMES IN FEW SECONDS. AND IN BATCH PROCESSING SYSTEM THE THE SYSTEM IS NOT DESIGNED FOR QUICK RESPONSE AND THE USER ENTERS HIS QUERY DAY BY DAY IN A PUNCH CARD AND THE RESULT WILL BE SHOWN TO HIM BY SYSTEM IN FEW DAYS DEPENDING UPON THE QUERY.
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What a computer system that store's organizes retrieve's analyzes and displays geographic data is?
GIS - Graphical Information System
Can you retrieve the data by system restore?
No you cant. You cant retrieve only system files which are deleted. But you can also retrieve other files by different softwares.. Actually there are many softwares which can retrieve files that are deleted so try to search some softwares maybe this one works http://www.recoverdeletedfilestool.com/ or http://www.recovermyfiles.com/
What can you do in database?
A database is a program in which to store information. Such information can be sorted and manipulated to create reports, and aid an advertising mail-merge, and so on.
What is a page in memory and how does it function within a computer system?
A page in memory is a fixed-size block of data used by a computer system to store and retrieve information. It functions as a unit of storage that can be easily accessed and managed by the computer's operating system. Pages help the computer efficiently organize and transfer data between the main memory and the storage devices, improving overall system performance.
What is the significance of R-precision in information retrieval and how is it calculated?
R-precision is a metric used to evaluate the effectiveness of information retrieval systems. It measures the precision of the top R documents retrieved by the system, where R is the total number of relevant documents in the dataset. To calculate R-precision, you divide the number of relevant documents retrieved by the total number of relevant documents in the dataset. This metric helps assess how well a system is able to retrieve relevant information from a given dataset.
