At Paris Open Source Summit, Vigile Prevosto, CEA List researcher and DECODER technical project leader, presents the H2020 project objectives, along with some results and the roadmap. The DECODER project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement number 824231.

1. DEveloper COmpanion for Documented and annotatEd code Reference
The DECODER project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 824231.
DECODER Project Overview
Virgile Prevosto
with DECODER's partners
Paris Open Source Summit
2019-12-11

2. DEveloper COmpanion for Documented on annotatEd
code Reference
Persistent Knowledge Monitor
Database storing all relevant
documents for a software project
documentation (manuals,
comments, bug tracker, ...)
formal specifications
source code
analysis and testing results
and evolutions (e.g. commits)
Tools for feeding the database
Tools for querying the database
Common schema to ease interactions
PKM
Testar
Frama-C
OpenJML
Specification
synthesis
Moskitt
Documentation
generation
NLP
knowledge
formalizer
NLP
knowledge
extractor
Syntactic
analyses
Augmented
IDE
ASFMmodels
inferred
properties
analysis results
infer properties
UM
L
m
odels
Inferredproperties
M
odels, Properties
Code, documentation
raw code information
Advancedqueriesoncode
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3. Encompassing the Whole Development Lifecycle
Requirements
Preliminary Design
Detailed Design
Implementation
Unit Checking
Integration Checking
System Validation
Maintenance
Evolution
NLP
spec generation
Modeling
ASFM
doc generation
IDE queries
invariant
generation
PKM
traceability
doc generation
PKM
Impact analysis
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4. From Informal to Formal Documents
Natural Language Processing
Knowledge extraction from informal documents and correspondance with relevant
code pieces
Knowledge extraction from code and semi-automated documentation generation
Abstract Semi-Formal Models (ASFM)
Graphical language to describe effects of a function on the data structures involved
Semi-automated generation of ASFM diagrams
Animation of the diagrams (graphical debugging)
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5. Use Cases
Evaluation and Improvement of DECODER toolset
Linux Drivers Quickly and accurately assess the quality of an external Linux driver for
inclusion in embedded systems
OpenCV Build a better knowledge of OpenCV API and its usage in some
applications
MyThaiStar UI/UX design and verification
Java Usage of Decoder toolset on selected Open Source Java projects
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6. PKM Meta Model
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7. PKM Server Design
Json as main interchange format
Start working on a Json Schema
Take advantage of existing
proposals:
SARIF
JCDB
Others?
Back-end: Document-oriented DB
MongoDB: licence issues
CouchDB
OrientDB: graph model used by
Testar
Others?
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8. Information Extraction
Dataset Gathering
Collect existing datasets (code and documents) outside Decoder
Start looking at use cases (MyThaiStar and OpenCV)
DeepAPI training corpus for natural language/call sequences correspondance
Initial experiments
Code to NL:
features extraction and grouping tokens
NL to Code:
Consider programming language as a foreign language
Neural Machine Translation
Objective: compute semantic similarity between source code and informal description
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9. Dissemination Activities
Public website at
https://decoder-project.eu
Present on LinkedIn and Twitter
Decoder poster, presented at OW2 Conf
Contact with other projects
https://openreq.eu/
https://www.chariotproject.eu/
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10. Current Roadmap
Progress according to plan
PKM implementation underway
First draft of schema design finalized
Early version of MongoDB-based server taking shape
NLP and code processing have produced their first results
Use cases investigation and methodology discussions ramping up
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11. Thank You!
The DECODER project has received funding from the European Union’s Horizon 2020 research and innovation programme under
grant agreement number 824231.
If you need further information, please contact the coordinator: TECHNIKON Forschungs- und Planungsgesellschaft mbH, Burgplatz
3a, 9500 Villach, AUSTRIA, Tel: +43 4242 233 55, Fax: +43 4242 233 55 77, E-Mail: coordination@DECODER.eu
The information in this document is provided “as is”, and no guarantee or warranty is given that the information is fit for any particular purpose. The content of
this document reflects only the author`s view – the European Commission is not responsible for any use that may be made of the information it contains.
The users use the information at their sole risk and liability.
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