13. AT products help peoples with disabilities to achieve greater independence, enhance their quality of life and compete in the real world ( inclusive society ).
30. Multitude of MCC concepts: switch-related systems (sip/puff switches), head pointing systems, eye tracking systems, BCI etc.
31. None of them provide a standardized general system for subjects with severe disabilities.
32.
33.
34. Use of innovative technologies, such as AI approaches, methods and tools (e.g. automated reasoning, first-order logic, fuzzy logic, neural-networks etc.).
47. Multi-channel inputs and action outputs (MIMO) can further improve performance and robustness, however fuzzy logic and control applications become extremely complex.
59. Drools-Chance (still in development) makes Drools capable of dealing with imperfect information natively. Also adds possibility to configure behavior of the engine to reason with different type of imperfection without changing the production rules.
65. Provides background to build modular and scalable AT systems, such as integrate additional sensors for a specific user and develop rules, without influencing specific application (e.g. computer or assistive device control).
66. Rules can be modified by different group of users (technicians, physicians, end-users).
77. Consumers: receive and act upon events (Applications, Systems, Data Stores, Business Processes, etc)
78. Intermediary Processing: rout / filter (raw events), produce (derived events). Consists of a number of building blocks (Agents) Intermediary Processing Event Producers Event Consumers
79. Event Processing Agents Building Blocks for: Translation, Composition, Aggregation, Enrichment, Splitting, Projection, Pattern Detection, etc. Even Filtering Event Matching Event Derivation time time time
93. Creating Derived Events: declare Direction @role( event ) @timestamp( timestamp ) @expires( 1m ) end declare Strength @role( event ) @expires( 1m ) end declare DoubleClick @role( event ) direction : Direction strength : Strength delay : int end rule detectDoubleClick when $direction : Direction( ) from entry-point "Raw-Direction-Stream" ... $strength : Strength( ) from entry-point "Raw-Strength-Stream" ... then DoubleClick dc = new DoubleClick($direction, $strength, 0); entryPoints[ "Cursor-Control-Endpoint-Stream" ). insert (dc); end
94.
95. Negative patterns, waiting for events to happen: declare Click @role( event ) @expires( 1m ) delay : int end declare Drag @role( event ) @expires( 1m ) direction : Direction strength : Strength delay : int end rule invalidDragMotion when $dragEvent : Drag( ) from entry-point "Cursor-Control-Endpoint-Stream" not ( Click( this before $dragEvent ) from entry-point "Cursor-Control-Endpoint-Stream" ) // click starts drag event then # notify user+system of invalid command ... end rule lenientDragMotion when $dragEvent : Drag( ) from entry-point "Cursor-Control-Endpoint-Stream" not ( Click( this before $dragEvent ) from entry-point "Cursor-Control-Endpoint-Stream" ) Click( this after[0s,5s] $dragEvent ) from entry-point "Cursor-Control-Endpoint-Stream" then # allow drag motion... ... end
98. Event processing from specific streams in rules: StatefulKnowledgeSession ksession = ... ... WorkingMemoryEntryPoint rawDirectionEntryPoint = ksession.getWorkingMemoryEntryPoint( "Raw-Direction-Stream" ); WorkingMemoryEntryPoint rawStrengthEntryPoint = ksession.getWorkingMemoryEntryPoint( "Raw-Strength-Stream" ); … // Every time we get input from direction sensor do: rawDirectionEntryPoint.insert(direction); // Every time we get input from flow sensor do: rawStrengthEntryPoint.insert(strength); ... rule detectVerticalScrolling When ... $direction : Direction( ) from entry-point "Raw-Direction-Stream" $strength : Strength( ) from entry-point "Raw-Strength-Stream" ... then ...
103. Push derived events for distribution in rules: StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(config, null ); ksession.registerChannel( "cursor-control" , new CursorControlChannel()); ... public class CursorControlChannel implements Channel { private List<MouseControlService> controlServices ; @Override public void send(Object command) { for (MouseControlService service : controlServices ) { service.publishCommand(command); } } ... rule detectDoubleClick when ... then DoubleClick dc = new DoubleClick(); ... channels[ "cursor-control" ].send( dc ); end
104.
105. Choose a Clock type (realtime or pseudo for testing): ... KnowledgeBaseConfiguration config = KnowledgeBaseFactory. newKnowledgeBaseConfiguration (); config.setOption( EventProcessingOption. STREAM ); KnowledgeBase kbase = KnowledgeBaseFactory. newKnowledgeBase (config); ... ... KnowledgeSessionConfiguration config = KnowledgeBaseFactory. newKnowledgeSessionConfiguration (); config.setOption( ClockTypeOption. get ( "realtime" ) ); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(config, null ); ...
Expert – Rule Engine side, Logic side Flow – advanced process engine, tight integration of processes and rules Fusion – Even Processing , CEP integration into Drools Guvnor - about server-side management, web stuff
Expert – Rule Engine side, Logic side Flow – advanced process engine, tight integration of processes and rules Fusion – Even Processing , CEP integration into Drools Guvnor - about server-side management, web stuff
