Uncertain inference
Uncertain inference was first described by Rijsbergen[1] as a way to formally define a query and document relationship in Information retrieval. This formalization is a logical implication with an attached measure of uncertainty.
Definitions
Rijsbergen proposes that the measure of uncertainty of a document d to a query q be the probability of its logical implication, i.e.:
P(d → q)
By doing this it acomplishes two things:
- Separate the processes of revising probabilities from the logic
- Separate the treatment of relevance from the treatment of requests
References
- ^ C. J. van Rijsbergen (1986), A non-classical logic for information retrieval, The Computer Journal, pp. 481–485