Approaches
Three standard approaches are now widely accepted
- Hand-written regular expressions (perhaps stacked)
- Using classifiers
- Generative: naïve Bayes classifier
- Discriminative: maximum entropy models
- Sequence models
- Hidden Markov model
- CMMs/MEMMs
- Conditional random fields (CRF) are commonly used in conjunction with IE for tasks as varied as extracting information from research papers to extracting navigation instructions.
Numerous other approaches exist for IE including hybrid approaches that combine some of the standard approaches previously listed.
Read more about this topic: Information Extraction
Famous quotes containing the word approaches:
“You should approach Joyce’s Ulysses as the illiterate Baptist preacher approaches the Old Testament: with faith.”
—William Faulkner (1897–1962)
“I should say that the most prominent scientific men of our country, and perhaps of this age, are either serving the arts and not pure science, or are performing faithful but quite subordinate labors in particular departments. They make no steady and systematic approaches to the central fact.... There is wanting constant and accurate observation with enough of theory to direct and discipline it. But, above all, there is wanting genius.”
—Henry David Thoreau (1817–1862)
“Bloody men are like bloody buses—
You wait for about a year
And as soon as one approaches your stop
Two or three others appear.”
—Wendy Cope (b. 1945)