1Inria Rhône-AlpesEMGnet meeting - December 98

A Platform for EMG Studies

Danielle Ziébelin, Martine Maumeand Philippe Genoud

INRIA Rhône-AlpesProjet Sherpa

http://www.inrialpes.fr/sherpa/Firstname.Lastname@inrialpes.fr

2Inria Rhône-AlpesEMGnet meeting - December 98

Goals of the EMGnet Project

• share the different resources of the EMGnet nodes­ software­­ specialized­equipment­...

• exchange data that require analysis

• enhance knowledge and profit from it

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Difficulties

• each node should have access to the competence of the other nodes

but ...

• complex software libraries / modules• heterogeneous computer environments• physicians are not programmers

4Inria Rhône-AlpesEMGnet meeting - December 98

The JACOMO Platform

JAva & COmponents for electroMyOgraphy

• a common platform for the different partners that allows them:

- to integrate their own software- to access software of the other partners

5Inria Rhône-AlpesEMGnet meeting - December 98

JACOMO’s Features

• use of software components to encapsulate data processing

• ability to distribute processing• visual programming interface• aid to the users through the use of a knowledge

base• JAVA language: the glue to assemble different

parts of the platform

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Software Components

• modules to be integrated in the environment• modules with different levels of granularity• related components to link the modules (filters,

choice, loop, …)

• creation of « scripts » (chains of components)

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Visual Programming

• GUI to dynamically­ load ­ configure­ connect­ execute

components

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Knowledge Based Supervision

Knowledge Based Problem Solving System

• The user submits a problem to be solved• The system helps him/her in

­ selecting the right components­ interacting with the components (parameters)­ linking the components

9Inria Rhône-AlpesEMGnet meeting - December 98

Types of Knowledge

• Methodological (strategies of resolution)­ decomposition of a problem to

several subproblems (tasks)­ association of one or more

components with each elementary task

­ assembling the components to solve a higher level problem

Methodological KB

Component library

10Inria Rhône-AlpesEMGnet meeting - December 98

Types of Knowledge

• Methodological• Descriptive

­ functionality of the components­ nature of the information used by

the tasks• input, output

Methodological KB

Components library

KB related to the EMG domain

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Distribution

• Domain (descriptive) knowledge ­ common­knowledge­shared­by­all­the­partners

• Components and the operative knowledge associated with them­ developed­and­maintained­locally­under­responsibility­of­each­EMGnet­node

­ accessible­by­the­other­nodes­through­the­network

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Distribution (cont.)

• A task can be published to allow its use from other sites• A distant task used in a problem solving strategy is

seen as a terminal task

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Distribution (cont.)

• When a distant task is invoked­ the resolution graph is

downloaded

­ the resolution process continues until elementary tasks are obtained

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Distribution

• Execution of a distant component­ Download of the

component and then its local execution

­ Remote execution

Data

Results

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How far we are ?INRIA:has long-term and valuable experience in

program supervision based on tasksobject-based knowledge representations

+is currently focusing on technology components and building the EMG knowledge base +has to develop the distributed environment (RMI, CORBA, etc.) ------------------------------------ JACOMO

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Contribution of INRIA to the Project

• creation of a knowledge base of the EMG concepts

• specification and development of the visual distributed environment based on components

• implementation of a component to record medical cases