madeleine, a ravenclaw exercise in the medical …madeleine, a ravenclaw exercise in the medical...

Madeleine, a RavenClaw Exercise in the Medical Diagnosis Domain

Dan Bohus, Alex Rudnicky

MITRE Workshop on Dialog Management,Boston, October 2003

10-127-2003 Madeleine: a RavenClaw exercise in the medical diagnosis domain…

Overall Architecture

ParsingPHOENIX/HELIOS

Dialog Manag.RAVENCLAW

Back-end(perl)

Language Gen.ROSETTA

RecognitionSPHINX

SynthesisFESTIVAL


Overall Architecture (internals)



Back-end(perl)


HUB

FESTIVALSERVER

RecognitionSPHINX

SynthesisFESTIVAL

Galaxy





Back-end(perl)


RecognitionSPHINX

SynthesisFESTIVAL





Back-end(perl)


Text I/OTTYServer

RecognitionSPHINX

SynthesisFESTIVAL


Developed Resources



Back-end(perl)


Text I/OTTYServer

Grammar

Templates

RavenClawDialogTask

Specification

Back-end(perl)


Development Time



Back-end(perl)


Text I/OTTYServer

Grammar

Templates

RavenClawDialogTask

Specification

Back-end(perl)

RC Fixes 2h15, 11%

RavenClaw 4h, 19%

Design 4h, 18% Setup

1h10, 5%

Grammar3h45, 18%

Backend3h20, 16%

Templates 2h45, 13%

Total: 21:15h


RavenClaw Architecture

Captures all domain-specific dialog (task) logic with a hierarchical descriptionThe authoring effort is focused entirely here

Dialog Task (Specification)

Domain-independent Dialog Engine

Manages dialog by executing the dialog task specificationProvides domain-independent conversational strategies



Dialog Stack

Madeleine

E:LoadSymptoms GeneralFeel

R:HowAreYou? I:Glad I:Sorry

Diagnose

Fever Travel

R:AskFever E:MeasureTemp I:InformFever

I:Welcome

Expectation Agenda

general_feeling

chart

have_fever

diagnostic



Dialog Stack

Madeleine

Madeleine



Diagnose

Fever Travel


I:Welcome

Expectation Agenda

general_feeling

chart

have_fever

diagnostic



Dialog Stack

Madeleine

Welcome

Madeleine



Diagnose

Fever Travel


I:Welcome

Expectation Agenda

general_feeling

chart

have_fever

diagnostic



Dialog Stack

Madeleine

Hi, this is Madeleine, the automated…

Madeleine



Diagnose

Fever Travel


I:Welcome

Expectation Agenda

general_feeling

chart

have_fever

diagnostic



Dialog Stack

Madeleine


Madeleine



Diagnose

Fever Travel


I:Welcome

LoadSymptoms

R:Headache R: R: R:

Expectation Agenda

general_feeling

chart

have_fever

diagnostic

headache



Dialog Stack

Madeleine


Madeleine



Diagnose

Fever Travel


I:Welcome

R:Headache R: R: R:

Expectation Agenda

general_feeling

chart

have_fever

diagnostic

headache



Dialog Stack

Madeleine


Madeleine



Diagnose

Fever Travel


I:Welcome

R:Headache R: R: R:

GeneralFeel

Expectation Agenda

general_feeling

chart

have_fever

diagnostic

headache



Dialog Stack

Madeleine


Madeleine



Diagnose

Fever Travel


I:Welcome

R:Headache R: R: R:

GeneralFeel

How are you feeling today?

general_feeling

chart

have_fever

diagnostic

HowAreYou

Expectation Agenda

general_feeling: [good], [bad], [soso]

general_feeling: [good], [bad], [[good], [bad], [[good], [bad], [sosososososo]]]

general_feeling: [good], [bad], [[good], [bad], [[good], [bad], [sosososososo]]]have_fever: [fever]. ![yes], ![no]![yes], ![no]![yes], ![no]headache: [headache], ![yes], ![no]![yes], ![no]![yes], ![no]cough: [cough], ![yes], ![no]![yes], ![no]![yes], ![no]……

GeneralFeel

I:Glad I:Sorry

Not so good, I think I have a fever[soso](not so good)[fever](I think I have a fever)

headache

GeneralFeel


Illustrated FeaturesDynamic generation of dialog task structure

Symptoms loaded from backend, appropriate structures to “talk about them” created on-the-flyNew symptoms – no DM changes

Dynamic dialog control policyThe order in which symptoms are addressed is controlled by the backend

Conversational skills


Dynamic Dialog Control …

Dialog Stack

Madeleine

Hi, this is Madeleine, the automated…How are you today?Not so good, I think I have a headacheSorry to hear you’re not feeling so good,Tell me more about your symptoms…Do you have abdominal pain?

Madeleine



Diagnose

Fever Travel


I:Welcome

R:Headache R: R: R:

Diagnose

Expectation Agenda

general_feeling

chart

have_fever

diagnostic

headache

Backend Decision Tree


Illustrated FeaturesDynamic generation of dialog task structure

Symptoms loaded from backend, appropriate structures to “talk about them” created on-the-flyNew symptoms – no DM changes

Dynamic dialog control policyThe order in which symptoms are addressed is controlled by the backend

Conversational skills


Conversational SkillsCorresponding agencies added automatically to the dialog task tree

HelpWhat Can I Say?RepeatSuspend / ResumeStart OverTimeout handling (not illustrated)

Still need all the language generation prompts and grammar, but some of those are develop-once, too


ConclusionHighlights

Set task posed no challenges to the frameworkEasy to implement

Dynamic dialog structure and controlAutomatic use of domain-independent conversational skills

Lowlights?Toolkit perspective: how easy would it be for someone else to build it?Asynchronous behaviors? (timing)Couple of bugs / fixes (or is that a highlight?)…


Demo

Run


RavenClaw GroundingMadeleine



Diagnose

Fever Travel


I:Welcome

R:Headache R: R: R:

general_feeling

chart

have_fever

diagnostic

headache

Grounding EngineStateIndicators

Strategies


Other RavenClaw systemsLARRI – Language Assistant for Retrieval of Repair InformationRoomLine – Conference room reservation within SCSLet’s Go! (BusLine) – Bus schedule information in PittsburghTeamTalk – Command and control for a team of robotsEureka – Dialog interface to a clustered web search engine (Vivisimo)

madeleine, a ravenclaw exercise in the medical …madeleine, a ravenclaw exercise in the medical...

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