System and method for measuring domain independence of semantic classes
AssigneeLucent Technologies Inc.
InventorsJ. Eric Fosler-Lussier, Chin-Hui Lee, Andrew N. Pargellis, Alexandros Potamianos
Life of this patent
Estimating the term…
Abstract
A system for, and method of, measuring a degree of independence of semantic classes in separate domains. In one embodiment, the system includes: (1) a cross-domain distance calculator that estimates a similarity between n-gram contexts for the semantic classes in each of the separate domains to determine domain-dependent relative entropies associated with the semantic classes and (2) a distance summer, associated with the cross-domain distance calculator, that adds the domain-dependent distances over a domain vocabulary to yield the degree of independence of the semantic classes.
Claims21
A system for measuring a degree of independence of semantic classes in separate domains, comprising:
- a cross-domain distance calculator that estimates a similarity between n-gram contexts for said semantic classes in each of said separate domains to determine domain-dependent relative entropies associated with said semantic classes;
- and
- a distance summer, associated with said cross-domain distance calculator, that adds said domain-dependent distances over a domain vocabulary to yield said degree of independence of said semantic classes.
A method of measuring a degree of independence of semantic classes in separate domains, comprising:
- estimating a similarity between n-gram contexts for said semantic classes in each of said separate domains to determine domain-dependent relative entropies associated with said semantic classes;
- and
- adding said domain-dependent distances over a domain vocabulary to yield said degree of independence of said semantic classes.
A method of porting a semantic class from a first domain into a second domain, comprising:
- measuring a degree of independence of said semantic class, said measuring including:
- estimating a similarity between n-gram contexts for said semantic class in said first domain and said second domain to determine a domain-dependent relative entropy associated with said semantic class, and
- adding said domain-dependent distances over a domain vocabulary to yield said degree of independence of said semantic classes;
- and
- employing said degree of independence to determine whether said semantic class is properly portable into said second domain.
Dependencies are inferred from the claim text.