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SMILA is an extensible framework for building search solutions to access unstructured information in the enterprise. Besides providing essential infrastructure components and services, SMILA also delivers ready-to-use add-on components, like connectors to most relevant data sources. Using the framework as their basis will enable developers to concentrate on the creation of higher value solutions, like semantic driven applications etc.
Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems. It could crawl and extract information from File system, Websites, Mail boxes and Mail servers. It supports various file formats like Office, PDF, Zip and lot more. Metadata information is extracted from image files. Aperture has a strong focus on semantics, metadata extracted could be mapped to predefined properties.
GATE excels at text analysis of all shapes and sizes. It provides support for diverse language processing tasks such as parsers, morphology, tagging, Information Retrieval tools, Information Extraction components for various languages, and many others. It provides support to measure, evaluate, model and persist the data structure. It could analyze text or speech. It has built-in support for machine learning and also adds support for different implementation of machine learning via plugin.
UIMA analyzes large volumes of unstructured information in order to discover knowledge that is relevant to an end user. It is a framework with different set of components. The components include Language Identification, Language specific segmentation, Sentence boundary detection, Entity detection (person/place names) etc. The framework manages these components and the data flows between them.
OpenPipe is an open source scalable platform for manipulating a stream of documents. A pipeline is an ordered set of steps / operations performed on a document to convert from its raw form to something ready to be put into the index. The operations performed on documents include language detection, field manipulation, POS tagging, entity extraction or submitting the document to a search engine.
ManifoldCF is an effort to provide an open source framework for connecting source content repositories like Microsoft Sharepoint, EMC Documentum FileNet, LiveLink (OpenText), Patriarch, Meridio (Autonomy), Windows shares to target repositories or indexes such as Apache Solr, QBase (formerly MetaCarta). It could also retrieve content from file system, JDBC connector, RSS crawler, and web crawler.