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ViSoar A Graphical Agent Development Environment for Soar
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Soar may be also used as an agent architecture for the ... high level structured editor and reverse engineering tool (Phoebe) deViSoar. Text editor ... Phoebe ... – PowerPoint PPT presentation
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Title: ViSoar A Graphical Agent Development Environment for Soar
1
ViSoar - A Graphical Agent Development
Environment for Soar
- Tony Hirst
- ICSRG
2
Overview
- What is Soar?
- What is ViSoar?
- Why Bother?
- Demo
3
What is Soar?
- A production system architecture
- Developed as a cognitive modelling architecture
- BUT
- Soar may be also used as an agent architecture
for the construction of psychologically
plausible autonomous agents
4
Knowledge in Soar Agents
- Architectural constraints on representation
- lead to idea of Idealised Soar Model (ISM)
- Explicit scaffolding knowledge
- production names
- file structure for larger rulesets
- Implicit knowledge
- operator/problem-space hierarchy
- avtree ontology
5
Typing Soar Productions I
- State elaboration
- default/context defining elaborations
- contingent attributes and values
- Productions for making permanent changes to state
elements - operator proposition, search control,
application, (termination)
6
Typing Soar Productions II
- Productions for interfacing with an external
environment - input-link
- receiver information about the environmental
state - receive messages from other agents
- output-link
- perform actions on the environment
- transmit messages to other agents
7
Explicit Scaffolding Knowledge
- File conventions (partitioned production storage)
- file contents
- filenames
- Production name conventions
- reflect problem-space/operator hierarchy
- reflect production type
8
Operator Problem-Space Hierarchies
- Operator hierarchy
- (ltsgt superstate (ltssgt operator.name parent)
- (ltsgt operator.name child)
- Problem-space hierarchy
- explicit
- (ltsgt problem-space.name whatever)
- (ltsgt superstate.operator.name whatever)
- implicit
9
The avtree I - Implicit vs. Explicit Problem
Spaces
- Explicit problem-spaces are identified with the
problem-space.name attribute - Implictly defined problem-spaces reflect the
state elements manipulated by productions acting
within the problem-space - The avtree for productions whose behaviour we
associate with activity in a given problem-space
defines the problem-space
10
The avtree II - Example
- (state ltsgt lev1a (ltlev1agt lev2 ltlev2gt)
lev1b val1) - (ltlev2gt lev3a ltlt val3a val3b gtgt -lev3b ltxgt)
- --gt
- (ltlev2gt lev3b val3c )
- results in the avtree
- lev1a
- lev2
- lev3a
- val3a, val3b
- lev3b
- val3c
- lev1b
- val1
11
The avtree III - Element Types
- The avtree for a ruleset essentially provides a
hierarchically structured ontology - major attributes (have attributes as values)
- minor attributes (have constant values)
- (fixed) values
- single attributes
- multi-attributes
12
ViSoar
- ViSoar - an integrated visual development and
debugging environment for the Soar cognitive
agent architecture.
13
Available Tools
- Coding Tools
- Soar Development Environment (SDE)
- emacs addon developed for Soar 6
- Debugging Tools
- Soar architecture commands
- GUI front end in form of Tcl-Soar Interface (TSI)
- Development Tools
- Task AcQuisition Language (TAQL)
- Visual Soar
14
Philosophy
- Visual environment
- Written in Tcl/Tk
- Exploit Soar architecture at command rather than
code level - Facilitate the construction of typo free Soar code
15
What does ViSoar provide?
- An integrated visual Soar development environment
- code generation tools (deViSoar)
- offline reverse engineering tools (reViSoar)
- high level structured editor and reverse
engineering tool (Phoebe)
16
deViSoar
- Text editor
- avtree ontology editor
- Automatically generated skeleton productions
- Various Soar code manipulating tools
- OR
- NOT
17
reViSoar
- Reverse engineering of legacy Soar agents
- Utilises an offline operator hierarchy analyser
(OpHelia) - extracts implicit structure of rulesets
- operator/problem space hierarchy
- productions related to particular
operators/problem spaces - Generates avtree that may be passed to deViSoar
18
Phoebe
- High level, structured editor for building task
hierarchies using Idealised Soar Model (ISM) - Automatic code generation and structured
code-save capabilities - Automated reverse engineering of Soar code into
ISM format - Awaiting full integration with deViSoar and
reViSoar
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