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1. Word features
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Words feature describe different aspects of the words present in the buffer or in the stack.
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They are composed of an *address function* identifying a particular word and an *attribute function* selecting a specific attribute of the word, such as its form, lemma, part of speech ... |
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They are composed of an *address function* identifying a particular word and an *attribute function* selecting a specific attribute of the word, such as its form, lemma, part of speech ...
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Such features are represented as strings that are the concatenation of the address function and the attribute function.
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Address function can be one of the following:
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* b0 the current word in the buffer
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* b1 the word following b0
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* b2 the word following b1
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* b3 the word following b2
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* bm1 the word preceding b0
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* bm2 the word preceding b1
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* bm3 the word preceding b2
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* s0 the word on the top of the stack
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* s1 the word below s0
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* s2 the word below s1
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* s3 the word below s2 |
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