An Alfresco Apache Stanbol Integration
(port of OpenCalais Integration)
Steve Reiner
CTO
Integrated Semantics

OpenCalais Integration Features
• Share, FlexSpaces, and Explorer UI
• Auto tagging action (manual and
rules) in all
• List semantic tags in details in all
• Share, FlexSpaces: Semantic Tag
Clouds, Geo-Tagged Map
• FlexSpaces: Suggest Tags, Add /
Remove Tags on Doc
• Open Source

OpenCalais Share Integration Features
• Auto tag menu in Doc Lib, Repo, Details
• Semantic Tag Cloud Dashlets with category drop-down
• Geo-tagged map dashlet
• Dashlets work both on site and overall dashboards
• Search results list when click tags in these dashlets

OpenCalais Advantages / Disadvantages
• Advantages:
• Good Recognition Results on Names, Cities,
Companies
• Good for news, public website text
• Disadvantages:
• Doc Size limit on All versions (100k bytes)
• Daily submission items limits on Free OpenCalais (50k)
and Calais Professional (100k)
• Keep metadata extracted
• Focused on English, some support for French,Spanish
• Not Customizable in Taxonomy or in recognition code
• Not Open Source

Apache Stanbol
• Disadvantages:
• OpenNLP Recognition of Names, Cities, Companies
not as good as OpenCalais (can chain other
engines/services including OpenCalais)
• Advantages:
• No doc size or submission item limits
• Multi language focused
• Customizable in Taxonomy and in recognition code
• Open Source

Apache Stanbol
• More of a full semantic platform, not just text enhancement
• Focused on semantic content management
• Could be used for a more general semantic platform
• Componentized, OSGi based
• Enhancer, Enhancement Engines, Entity Hub, ContentHub,
Ontology Mgr, Rules, Reasoners, CMS Adapter, FactStore

Port of OpenCalais Integration to Apache
Stanbol
• Prototype download available now
• http://code.google.com/p/semantics4alfresco/
• Open Source
• All previous features in Share and Explorer are available
• Alfresco extension (4.x) and Share extension (4.0 and 4.2)
• Share auto-tag menus, semantic tag clouds dashlet, geo-tagged dashlet, semantic tags listed in
details
• Action can be used in content rules to auto-tag all submissions to a folder, etc.
• Auto tag action also available in Explorer, semantic tags listed on details page
• Suggest tag webscript not complete
• FlexSpaces doesn’t have support yet (need to add additional calls to different webscript URLs and
add preference options of to use OpenCalais or
• Leveraged a Java client API library contributed by Zaizi to Stanbol that makes
REST calls to Stanbol

Apache Stanbol Integration Features
Roadmap
• Finish Suggest Tag WebScript and add support to FlexSpaces for Stanbol
• Display of dbpedia info / webpage on entity next to search results list on page
displayed after semantic tag click
• Add using Stanbol contenthub instead of stateless entityhub to retain semantic
enhancement of docs
• If Zaizi Stanbol integration is not made available as open source, will add some
things such as Solr Facets search UI of semantic categories / entities
• Other things considering
• SKOS taxonomy editor
• Semantic Categories Graph (single doc, multiple docs)
• Tie in Alfresco as the content mgr of versions of Proté gé GWT Web UI ontology editor / tie in with
Stanbol
• Stanbol support for enhancing any CMIS repository
• Stanbol as platform semantic data integration of structured data in addition to unstructured

Links to Find out more
• http://code.google.com/p/semantics4alfresco/
• www.integratedsemantics.org blog
• www.integratedsemantics.com
• http://stanbol.apache.org
• http://www.iks-project.eu/
• http://www.opencalais.com/
• Twitter: @stevereiner