Federated search

« Back to Glossary Index

Purpose and Process of Federated Search
– Federated search allows users to search multiple databases at once in real time.
– It provides single point access to many information resources.
– Federated search returns data in a standard or partially homogenized form.
– It offers a real-time view of all sources.
– Federated search can personalize vertical preference for ambiguous queries.
– Federated searching consists of transforming and broadcasting a query to multiple databases or web resources.
– The results collected from the databases are merged and presented in a unified format.
– Federated search portals search public access bibliographic databases, library catalogues, and web-based search engines.
– Portals de-dupe the results list by merging and removing duplicates.
– Federated search is as current as the individual information sources, as they are searched in real time.

Implementation and Challenges of Federated Search
– Metasearch engines are one application of federated searching.
– Metasearch does not overcome the shortcomings of component search engines, such as incomplete indexes.
– Translating the search query to be compatible with component search engines is a challenge.
– Scalability is a challenge in the implementation of federated search engines.
– Cascaded federated search enables a large number of information sources to be searched via a single query.
– Federated searches present challenges compared to conventional searches.
– Maintaining the performance and response speed of a federated search engine is difficult as more information sources are combined.
– Ensuring compatibility of search queries with component search engines is a challenge.
– Federated search faces scalability challenges.
– Federated search engines need to address challenges related to ranking and relevance of search results.

Examples of Federated Search Engines
– WorldWideScience is a federated search engine composed of more than 40 information sources.
– Science.gov is a federated search portal that federates more than 30 information sources.
– Sesam is a federated search application built on top of an open-sourced platform.
– LinkedIn search engine uses federated search to personalize vertical orders based on user intent.
– SWIRL Search is an open-source federated search engine with pre-built connectors to popular search engines.

Passing of Credentials and Mapping Results
– Credentials must be passed to secure data sources for federated search.
– Different login credentials for different systems require mapping to each search engine’s security domain.
– Maintaining appropriate security is crucial when passing user credentials.
– Combining facets from multiple sources into one set presents technical challenges.
– Understanding next page links is necessary for allowing users to navigate through combined results.
– Linked open data via RDF can help solve the challenge of mapping results to a common form.
– Ontologies can be added to map results using RDF technology.

Sorting and Scoring Results, and Robust Query
– Each web resource has its own relevance score and sorted results orders.
– Relevance varies greatly among federates, making it difficult to interleave results effectively.
– Determining the most relevant results is challenging or even impossible.
– Federated search may need to limit itself to the minimal set of query capabilities common to all federates.
– Inconsistencies in query capabilities among federates can limit the search functionality.
– Some federates may not support advanced query features, such as negation or quoted phrases.

Note: The content provided does not contain enough information to generate a fifth subtopic with five bullet list items.

Federated search (Wikipedia)

Federated search retrieves information from a variety of sources via a search application built on top of one or more search engines. A user makes a single query request which is distributed to the search engines, databases or other query engines participating in the federation. The federated search then aggregates the results that are received from the search engines for presentation to the user. Federated search can be used to integrate disparate information resources within a single large organization ("enterprise") or for the entire web.

Federated search, unlike distributed search, requires centralized coordination of the searchable resources. This involves both coordination of the queries transmitted to the individual search engines and fusion of the search results returned by each of them.

« Back to Glossary Index

Submit your RFP

We can't wait to read about your project. Use the form below to submit your RFP!

Gabrielle Buff
Gabrielle Buff

Just left us a 5 star review

Great customer service and was able to walk us through the various options available to us in a way that made sense. Would definitely recommend!

Stoute Web Solutions has been a valuable resource for our business. Their attention to detail, expertise, and willingness to help at a moment's notice make them an essential support system for us.

Paul and the team are very professional, courteous, and efficient. They always respond immediately even to my minute concerns. Also, their SEO consultation is superb. These are good people!

Paul Stoute & his team are top notch! You will not find a more honest, hard working group whose focus is the success of your business. If you’re ready to work with the best to create the best for your business, go Stoute Web Solutions; you’ll definitely be glad you did!

Wonderful people that understand our needs and make it happen!

Paul is the absolute best! Always there with solutions in high pressure situations. A steady hand; always there when needed; I would recommend Paul to anyone!

Vince Fogliani

The team over at Stoute web solutions set my business up with a fantastic new website, could not be happier

Steve Sacre

If You are looking for Website design & creativity look no further. Paul & his team are the epitome of excellence.Don't take my word just refer to my website "stevestours.net"that Stoute Web Solutions created.This should convince anyone that You have finally found Your perfect fit

Jamie Hill

Paul and the team at Stoute Web are amazing. They are super fast to answer questions. Super easy to work with, and knows their stuff. 10,000 stars.

Paul and the team from Stoute Web solutions are awesome to work with. They're super intuitive on what best suits your needs and the end product is even better. We will be using them exclusively for our web design and hosting.

Dean Eardley

Beautifully functional websites from professional, knowledgeable team.

Along with hosting most of my url's Paul's business has helped me with website development, graphic design and even a really cool back end database app! I highly recommend him as your 360 solution to making your business more visible in today's social media driven marketplace.

I hate dealing with domain/site hosts. After terrible service for over a decade from Dreamhost, I was desperate to find a new one. I was lucky enough to win...

Paul Stoute has been extremely helpful in helping me choose the best package to suite my needs. Any time I had a technical issue he was there to help me through it. Superb customer service at a great value. I would recommend his services to anyone that wants a hassle free and quality experience for their website needs.

Paul is the BEST! I am a current customer and happy to say he has never let me down. Always responds quickly and if he cant fix the issue right away, if available, he provides you a temporary work around while researching the correct fix! Thanks for being an honest and great company!!

Paul Stoute is absolutely wonderful. Paul always responds to my calls and emails right away. He is truly the backbone of my business. From my fantastic website to popping right up on Google when people search for me and designing my business cards, Paul has been there every step of the way. I would recommend this company to anyone.

I can't say enough great things about Green Tie Hosting. Paul was wonderful in helping me get my website up and running quickly. I have stayed with Green...