Information Retrieval System

Data retrieval, in the context of an IR system, consists mainly of determining which documents of a collection contain the keywords in the user query which, most frequently, is not enough to satisfy the user information need. In fact, the user of an IR system is concerned re with retrieving information about a subject than with retrieving data which satisfies a given query. A data retrieval language aims at retrieving all objects which satisfy clearly defined conditions such as those in a regular expression or in a relational algebra expression Thus, for a data retrieval system, a single erronua object among a thousand retrieved objects means total failure.

Information retrieval (IR) deals with the representation, storage organization of, and access to information items. The representation and organization of the information items should provide the user with easy access to the information in which he is interested. Unfortunately, characterization of the acer information need is not a simple problem. Consider, for instance, the following hypothetical user information need in the context of the World Wide Web (or just the Web): Find all the pages (documents) containing information on college ten-His teams which:

Cara Kerja Information Retrieval adalah sebagai berikut 1. Sistem akan mengambil dokumen dari korpus 2. Sistem akan melakukan token atau memisahkan term berdasarkan spasi 3. Sistem akan melakukan filtering yang berguna untuk menghilangkan term yang tidak atau kurang berguna, bisa dengan tala atau andriani (kalo irs berbahasa indonesia) 4. Sistem akan melakukan stemming, atau pemisahan or pembentukan kata dasar

Information retrieval atau yang dikenal dengan sistem temu kembali berguna untuk mempercepat mendapatkan informasi melalui suatu sistem (mesin pencari atau search engine).  Baik dalam sistem tertutup ataupun terbuka, information retrieval sangat membantu.  Information Retrieval lebih efektif dan efisien. Adapun model dalam sistem temu kembali ini ada 3 macam, yaitu