Semantic Search Engines

Welcome to Alpha Maps! Search for a city and get a map of the things Wolfram|Alpha relates to it.

System One offers a range of new semantic search, analytics and collaboration products that de- crease the costs of daily infor- mation workflows, enable new business strategies and are more flexible as well as cost effective.

exploring the semantic web

Access, organize and search information, files, documents, projects within your entire organization from one place.

START, the world's first Web-based question answering system, has been on-line and continuously operating since December, 1993. It has been developed by Boris Katz and his associates of the InfoLab Group at the MIT Computer Science and Artificial Intelligence Laboratory. Unlike information retrieval systems (e.g., search engines), START aims to supply users with "just the right information," instead of merely providing a list of hits. Currently, the system can answer millions of English questions about places (e.g., cities, countries, lakes, coordinates, weather, maps, demographics, political and economic systems), movies (e.g., titles, actors, directors), people (e.g., birth dates, biographies), dictionary definitions, and much, much more. Below is a list of some of the things START knows about, with example questions. You can type your question above or select from the following examples.

Our leading semantic engine, CTRL, tracks your subject of interest by fetching relevant news from the top news sources online saving you time by delivering only relevant articles (summary and original link) straight to your email.

Preview our experimental interactive features Try a new way to interact with your Wolfram|Alpha results-based on Wolfram Computable Document Format (CDF) www.wolframalpha.com/ technology.

Your Taste Engine for movies and TV shows ...

Find relevant images of Trending Topics in realtime / Nachofoto is a Semantic Time-based Vertical Image Search Engine. Our focus has been to deliver Fresh and Relevant image results for High Volume and Trending queries. Our goal is to change the way people interact with image search engines.

SIREn: Efficient semi-structured Information Retrieval for Lucene

List of semantic search engines

The ctrl semantic engine is the first product of the Research and Development group at PRAGMATECH. The main functionality of ctrl's API is to identify the set of (disambiguated) key topics. In ctrl we have moved from words to concepts, then from simple concepts to topics (which are not phrases, but complex 'disambiguated' concepts), and, subsequently, to key topics that represent what a certain document is about.

Read less know more. Enliten takes note of what you like to see in your channel and shows you those sorts of articles more often.

Precision Search & Find

ProductDB aims to be the World's most comprehensive and open source of product data. Not only do we want to create a page for every product in the world, we want to connect the underlying structured data together into one huge interlinked dataset... read more

Precision Search & Find

System One offers a range of new semantic search, analytics and collaboration products that de- crease the costs of daily infor- mation workflows, enable new business strategies and are more flexible as well as cost effective.

SOBOLEO is a system for web-based collaborative engineering of SKOS ontologies and annotation of web resources. Users collaboratively create a taxonomy, use it to annotate web resources and use it as background knowledge during search.

Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine. Jena is open source and grown out of work with the HP Labs Semantic Web Programme.