The NLM Gateway: a Metasearch Engine for Disparate Resources
نویسندگان
چکیده
The U.S. National Library of Medicine (NLM) has created a metasearch engine called the NLM Gateway at the URL "gateway.nlm.nih.gov". The Gateway allows the user to issue one search that takes place on multiple NLM retrieval engines. A composite result set is presented in several categories of information: journal citations; books, serials and audiovisuals; consumer health; meeting abstracts; and other collections.
منابع مشابه
The Mechanics of a Deep Net Metasearch Engine
The Deep Net refers to the thousands of topic-specific search engines on the Internet, including those that are inaccessible to traditional crawler-based search engines. Commercial metasearch engines have been slow to provide a simple, universal interface to these smaller topic-specific search engines. Turbo10 has developed a commercial metasearch engine that connects to these resources en mass...
متن کاملAdvanced Metasearch Engine Technology
Among the search tools currently on the Web, search engines are the most well known thanks to the popularity of major search engines such as Google and Yahoo!. While extremely successful, these major search engines do have serious limitations. This book introduces large-scale metasearch engine technology, which has the potential to overcome the limitations of the major search engines. Essential...
متن کاملHistorical Background
Definition Metasearch is to utilize multiple other search systems (called component search systems) to perform simultaneous search. A metasearch engine is a search system that enables metasearch. To perform a basic metasearch, a user query is sent to multiple existing search engines by the metasearch engine; when the search results returned from the search engines are received by the metasearch...
متن کاملOn Selective Result Merging in a Metasearch Enviroment
When a query is passed to multiple search engines, each search engine returns a ranked list of documents. The problem of metasearch is to fuse these ranked lists such that optimal performance is achieved because of the combination. There are two parts of the metasearch process. The first part is to select which search engine results are to be merged. The second part is the actual process of mer...
متن کاملSpying Out Real User Preferences for Metasearch Engine Personalization
Most current metasearch engines provide uniform service to users but do not cater for the specific needs of individual users. To address this problem, research has been done on personalizing a metasearch engine. An interesting and practical approach is to optimize its ranking function using clickthrough data. However, it is still challenging to infer accurate user preferences from the clickthro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Studies in health technology and informatics
دوره 107 Pt 1 شماره
صفحات -
تاریخ انتشار 2004