4. VL3
• Prototype of a virtual language learning lab
Focus: Dialogue System Technology
Technological Platform: Sintagma (Natural Language Inc.)
Sintagma: allows for a complete, coherent and flexible treatment of
natural language comprehension and dialogue management.
Virtual Laboratory for Language Learning (VL3)
5. SINTAGMA
•Based on grammatical analysis strategies (superior to using keyword
spotting)
•Lexical level: words are analyzed in microseconds
•Representation of anaphoric expressions
•Allows for immediate correction
•Memory
Virtual Laboratory for Language Learning (VL3)
6. THE STAGES OF THE VL3
Virtual Laboratory for Language Learning (VL3)
8. Lexicon
Database with over 1,200,000 words in Spanish
clasified in lexical categories and annotated with
values for certain features.
Virtual Laboratory for Language Learning (VL3)
15. Features (III)
The syntactic categories inherit some features
from the lexical categories that form them.
Virtual Laboratory for Language Learning (VL3)
16. Grammar
A grammar is a set of rules that determine how to
build correct expressions.
They are formed by lexical and syntactic
categories in a specific order.
AdjP = adverb? + adjective
NP = noun + AdjP?
DP = article + NP
VP = verb + DP
P = DP + VP
Virtual Laboratory for Language Learning (VL3)
17. Features (IV)
Common features are taken.
DP = article + noun
Virtual Laboratory for Language Learning (VL3)
18. Features (V)
Features provide feedback.
DP = article + noun, but also
IF article.gender ≠ noun.gender THEN
Error: gender agreement
IF article.number ≠ noun.number THEN
Error: number agreement
ELSE
DP.gender = noun.gender
DP.number = noun.number
Virtual Laboratory for Language Learning (VL3)
19. Scenarios
Specific rules supported by syntactic categories.
“¿Cómo está tu hermano?”
“¿Cómo está su hijo pequeño?”
“¿Cómo está la madre de tu amigo?”
HOWRU = interrogative + verb + DP, but also
interrogative = “cómo” AND
verb = “está”
Virtual Laboratory for Language Learning (VL3)
