Sliding window based part-of-speech tagging is used to part-of-speech tag a text.
A high percentage of words in a natural language are words which out of context can be assigned more than one part of speech. The percentage of these ambiguous words is typically around 30%, although it depends greatly on the language. Solving this problem is very important in many areas of natural language processing. For example in machine translation changing the part-of-speech of a word can dramatically change its translation.
Sliding window based part-of-speech taggers are programs which assign a single part-of-speech to a given lexical form of a word, by looking at a fixed sized "window" of words around the word to be disambiguated.
The two main advantages of this approach are:
- It is possible to automatically train the tagger, getting rid of the need of manually tagging a corpus.
- The tagger can be implemented as a finite state automaton (Mealy machine)
Read more about Sliding Window Based Part-of-speech Tagging: Formal Definition, Further Reading
Famous quotes containing the words sliding, window, based and/or tagging:
“With these I would be.
And with water: the waves coming forward, without cessation,
The waves, altered by sand-bars, beds of kelp, miscellaneous
driftwood,
Topped by cross-winds, tugged at by sinuous undercurrents
The tide rustling in, sliding between the ridges of stone,
The tongues of water, creeping in, quietly.”
—Theodore Roethke (1908–1963)
“I remember, I remember,
The house where I was born,
The little window where the sun
Came peeping in at morn.”
—Thomas Hood (1799–1845)
“Foster the labor of our country by an undeviating metallic currency ... always recollecting that if labor is depressed neither commerce nor manufactures can flourish, as they are both based upon the production of labor, produced from the earth, or the mineral world.”
—Andrew Jackson (1767–1845)
“The 5307th has collapsed. From a medical viewpoint, they’re finished as a fighting unit.... I have never seen human beings in such condition. They’re drained, physically and psychologically drained. I’m not tagging them for specific ailments. I’m simply marking every man in the outfit A.O.E.—accumulation of everything.”
—Samuel Fuller, U.S. screenwriter, and Milton Sperling. Samuel Fuller. Doc (Andrew Duggan)