VoiceXML Data Logging Specification

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VoiceXML Data Logging Specification
David ThomsonCTO, SpeechPhone SpeechTEK Aug.
20, 2007
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VoiceXML Tools Charter

• VoiceXML Tools Committee Objective
• Make VoiceXML easy to use through better tools.
• Metalanguage Working Group Objective
• Create a uniform intermediate application
  format.
• Data Logging Working Group Objective
• Create a specification for logging runtime data.
• Open Source Grammars Working Group Objective
• Create a set of high-quality ASR grammars.

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Typical VoiceXML System
Data Log
Runtime Data
Application Server
VoiceXML Browser
ASR/TTS Servers
Devel. Tools
VoiceXML
Metalanguage
Data Log
Data Log
Data Log
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Data Logging Specification Motivation
Problem Runtime data format is proprietary,
different for each platform, making analysis
across vendors difficult. Solution Define a
uniform specification with elements, structure,
and syntax.
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Status

• Draft specification announced today (Aug. 20,
  2007)
• Draft available at www.voicexml.org/datalogging
• Comments invited through November 9, 2007
• Did I mention this is a draft?

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Data Logging Entities

• Application server
• VoiceXML browser
• ASR/TTS servers
• Databases
• Business transaction servers
• Human agents
• Human annotations
• Development tools (?)

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Data Logging Use Cases users

• Application tuning developer
• Service usage statistics operations, marketing
• Service quality reporting support staff
• Traffic engineering buyer, service provider
• Real-time system health monitor (?) operations,
  support
• Bill generation service provider
• Find grammar dialog problems dialog designer
• Quantify traffic loading QA
• Analyze caller behavior marketing
• Pre/post-deployment system testing QA, testing
  engineers
• Usability analysis User interface designer

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Data Logging Types ( examples)

• Universal attributes (date/time)
• Telephony-related events (transfer initiated)
• Prompts (transcription, coder type)
• Recordings (record ended)
• Speech Detection and Recognition (start of
  speech)
• Application-Related Events (VoiceXML URI, turn)
• Reusable Components (component executed)
• VoiceXML Gateway (audio cache hit)
• Billing (session duration)
• Configuration (time zone)
• System (temperature)

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Data Logging Data Examples

• VoiceXML session ID
• ANI
• Conferencing 3rd party
• Playback completed
• VoiceXML audio cache hits/misses
• Call duration
• Database response time
• ASR version number
• CPU idle percentage
• Initializing speech channel

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High-Level Requirements

• XML-based
• Proprietary format is OK if a mapping exists
• Not limited to VoiceXML
• Minimum set of data must be logged
• Intra-entity linkages are timestamp-independent.
• Easily developer extendable

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The first few lines of a log record
lt?xml version"1.0" encoding"UTF-8"?gt ltslslaml
xmlnssl"http//voicexml.org/2006/slaml
slversion"1.0"gt ltslmanifestgt
ltslsession name"Session-12345"
start"asr-session-req-1"
slclass"ASREngine" sllog-tag"asr-log-1"/gt
lt/slmanifestgt ltsllog tag"svr-log-tag-1"
slclass"ASREngine"
slentity"LumenVox Resource112"
xmlns"http//voicexml.org/2006/asr-log"gt
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Sample code Loading a grammar
ltgrammar-define-handler slstart"1124126927613
" slend"1124126927617" name"Global"
rank"0" uri"http//server.example.com/globalg
ram.xml" format"SRGS_ABNF" lang"en-US"
slhandle-request"define-grammar-msg-1"
outcome"success"gt ltgrammar-contentgt
ABNF 1.0 UTF-8 mode voice
tag-format ltlumenvox/1.0gt root MainMenu
MainMenu operator customer service
main menu lt/grammar-contentgt lt/grammar-define-
handlergt
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Data Logging Specification Organization
Draft documents exist for the overall SLAML
model, the application server, the VoiceXML
browser, and the speech recognizer.
SLAML Model
Speech Recognizer
Application Server
VoiceXML Browser
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Five documents found at the website

• Data Logging Overview
• Introduction and high-level description
• Session Log Annotation Markup Language
  Specification
• Defines the overall data logging model
• Application Server Logging Specification (ASLS)
• Automatic Speech Recognition Logging
  Specification
• VoiceXML Browser Data Logging Specification

DRAFT
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Domain Teams

• Application server Intervoice France Telecom
• Voice browser VoiceGenie West
• ASR server Lumenvox Nuance
• Overview style guide Genesys SpeechPhone
• Lead members

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For More Information
Draft voicexml.org/datalogging Feedback DL_at_vo
icexml.org Slides David David_at_SpeechPhone.com
Join Cindy c.tiritilli_at_ieee.org