36x72 poster template

1
INTEGRATING SEMANTIC WEB TO IMPROVE ONLINE
Marta
Gatius Meritxell González
TALP Research
Center (UPC)
The system consists of three layers 1
Presentation. It controls interaction with the
user. a. The Audio Web Server connected
with a VoiceXML Platform acting as
Voice Browser. b. The Text Server and the
Natural Language Analyzer for text
interaction. 2 Dialogue Management. It
controls the dialogue flow. a. The
Application Manager, controlling the language
and the service identification.
b. The Dialogue Manager, controlling dialogue.
3 Knowledge Layer. It manages data for the
application. a. The Ontology Manager,
for ontology access. b. Action Query
Manager, for backend access.
DIALOGUE SYSTEMS FOR ACCESSING THE WEB

• They are friendly and easy to use.
• They support different types of interactions
  menus, form filling
• and commands.
• They can tackle complex questions.
• They can be integrated with other modes.
• They are adaptable to different types of users
  languages, skills, ages and cultural sensitivity.
  
• Voice mode improves web usability, especially for
  people with impairments

THE DIALOGUE SYSTEM
Following a Service Oriented Architecture The
components of the system are interrelated between
themselves using FADA (Federated Advanced
Directory Architecture)

• The dialogue system was developed in the
  context of the
• European project HOPS (http//www.hops-fp6.or
  g)
• It was designed to enhance the usability and
  accessibility of
• online public services and information.
• It integrates language and semantic web
  technologies.
• The current implementation of the system
  supports
• speech (through the telephone)
• text mode (through the web)
• in several languages English, Spanish, Catalan
  and Italian.

CHART or PICTURE
Registration and lease renewal life-cycle
ARCHITECTURE OF THE SYSTEM

• In FADA the service registry is a network of
  nodes keeping
• information about the services.
• It provides to the system a more fault tolerant
  nature.

CHART or PICTURE
CHART or PICTURE
Service proxy look-up mechanism
THE USE OF ONTOLOGIES

• The system uses ontologies modelling the
  service tasks.
• The service tasks are represented by a set of
  concepts
• described by attributes.
• The attributes represent the information
  required/resulting
• when performing these tasks (input and output
  parameters).
• Domain and task-restricted ontologies are used
  for improving
• The communication the dialogue flow and
  language
• processing
• The obtaining of the linguistic resources
  for new services
• - Grammars following the standard SRGS
  for voice
• - Context-free grammars and lexicon
  for text
• Ontologies are implemented in the standard
  language OWL

2
AND LANGUAGE TECHNOLOGIES PUBLIC SERVICES
Sheyla Militello
Pablo Hernández
Loquendo S.p.A SUN
Microsystems
SAMPLE SERVICE 1 THE LARGE OBJECTS COLLECTION
The three tasks performed by the transactional
service Large Objects Collection are represented
in three separated concepts Information,
Collection and Cancellation. The collection task
sets a date for collection. The attributes
describing this concept correspond to the service
back-end parameters. The attribute objectype
represents the type of the object to be
collected. It is linked to a specific furniture
taxonomy providing all its possible values. It
is used to obtain the service-restricted
linguistic resources.
CONCLUSIONS

• Ontologies are specially appropriate in dialogue
  systems
• 1.   In complex and changing domains
• 2.   In mutli-modal and/or multilingual
  systems
• 3. In multi-domain systems
• In the Hops system ontologies modelling service
  tasks and
• domain knowledge are used for
• Dialogue management modelling
• Language processing
• Language generation
• Ontologies are used to generate the systems
  messages,
• the grammars and the lexicon adapted to
• Each service
• The speech and text modes
• The different languages

SAMPLE SERVICE 2 THE CULTURAL AGENDA
The Cultural Agenda is an informational service
giving information about the cultural events in
a city. Two possible consulting tasks are
allowed - Consult the list of events
matching a specific information - Consult
specific information about a particular
event These two tasks are represented in
separated concepts. The attributes describing
these concepts are those parameters of the query
back-end involved in the communication.
FUTURE WORK

• Integrating the ontologies used in a general
  e-government
• infrastructure.
• Incorporating service discovering and
  composition techniques.

REFERENCES
CULTURAL AGENDA

• Dupriez, C. Multilingual Vocal Access to
  Databases the Central Role of Ontology
  Management in VocaBase. Sixth International
  Protégé Workshop, England, 2003.
• Milward, D., Beveridge, M. Ontology-Based
  Dialogue Systems. Third Workshop on Knowledge and
  Reasoning in Practical Dialogue Systems, 2003.
• Wahlster, W. SmartKom Symmetric Multimodality
  in an Adaptive and Reusable Dialogue Shell. Human
  Computer Interaction Status Conference, 2003.
• Wilcock, G., Jokinen, K. Generating Responses
  and Explanations from RDF/XML and DAMLOIL. Third
  Workshop on Knowledge and Reasoning in Practical
  Dialogue Systems, 2003.

SINGLE EVENT location title participant date d
escription
EVENT LIST event type location date participan
t price