Table 1

condition . | feature . | instance . |
---|---|---|

all edges | category + size | (S, 3) |

category + head word | (S\NP, bought) | |

category + size + head word | (NP, 1, Lotus) | |

category + head POS | (S\NP, VBD) | |

#words > 1 | category + leftmost word | (S, IBM) |

category + rightmost word | (S\NP, Lotus) | |

category + leftmost POS bigram | (S, (NNP, VBD)) | |

category + rightmost POS bigram | (S, (VBD, NNP)) | |

category + lmost POS + rmost POS | (S, (NNP, NNP)) | |

binary edges | the binary rule | NP (S\NP) ⇒ S |

the binary rule + head word | (NP (S\NP) ⇒ S, bought) | |

rule + head word + non-head word | (NP (S\NP) ⇒ S, bought, IBM) | |

bigrams resulting from combination | (IBM, bought) | |

POS bigrams resulting from combination | (NNP, VBD) | |

word trigrams resulting from combination | (IBM, bought, Lotus) | |

POS trigrams resulting from combination | (NNP, VBD, NNP) | |

resulting lexical category trigrams | (NP, (S\NP)/NP, NP) | |

resulting word + POS bigrams | (IBM, VBD) | |

resulting POS + word bigrams | (VBD, Lotus) | |

resulting POS + word + POS trigrams | (NNP, bought, NNP) | |

Unary | unary rule | |

Edges | unary rule + head word |

condition . | feature . | instance . |
---|---|---|

all edges | category + size | (S, 3) |

category + head word | (S\NP, bought) | |

category + size + head word | (NP, 1, Lotus) | |

category + head POS | (S\NP, VBD) | |

#words > 1 | category + leftmost word | (S, IBM) |

category + rightmost word | (S\NP, Lotus) | |

category + leftmost POS bigram | (S, (NNP, VBD)) | |

category + rightmost POS bigram | (S, (VBD, NNP)) | |

category + lmost POS + rmost POS | (S, (NNP, NNP)) | |

binary edges | the binary rule | NP (S\NP) ⇒ S |

the binary rule + head word | (NP (S\NP) ⇒ S, bought) | |

rule + head word + non-head word | (NP (S\NP) ⇒ S, bought, IBM) | |

bigrams resulting from combination | (IBM, bought) | |

POS bigrams resulting from combination | (NNP, VBD) | |

word trigrams resulting from combination | (IBM, bought, Lotus) | |

POS trigrams resulting from combination | (NNP, VBD, NNP) | |

resulting lexical category trigrams | (NP, (S\NP)/NP, NP) | |

resulting word + POS bigrams | (IBM, VBD) | |

resulting POS + word bigrams | (VBD, Lotus) | |

resulting POS + word + POS trigrams | (NNP, bought, NNP) | |

Unary | unary rule | |

Edges | unary rule + head word |

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