Node Parsing posid

Appendix E: Node Parsing and IPADIC Part-of-Speech ID

When parsing nodes using the IPADIC dictionary, Natto::MeCabNode will have a posid value identifying the node's part-of-speech per the table below. The definitions come from the pos-id.def file that comes with mecab-ipadic.

POS, Sub-Class 1, Sub-Class 2, and Sub-Class 3 values refer to the part-of-speech classifications that you will see displayed in the MeCab's default output format as 品詞,品詞細分類1,品詞細分類2,品詞細分類3.

Part-of-Speech Table

POS	Sub-Class 1	Sub-Class 2	Sub-Class 3	POS ID
other	interjection	*	*	0
filler	*	*	*	1
exclamation	*	*	*	2
symbol	alphabetic	*	*	3
symbol	miscellaneous	*	*	4
symbol	left parenthesis	*	*	5
symbol	right parenthesis	*	*	6
symbol	comma	*	*	7
symbol	space	*	*	8
symbol	period	*	*	9
adjective	main	*	*	10
adjective	suffix	*	*	11
adjective	aux	*	*	12
particle	case	miscellaneous	*	13
particle	case	quote	*	14
particle	case	compound	*	15
particle	dependency	*	*	16
particle	final	*	*	17
particle	conjunctive	*	*	18
particle	special	*	*	19
particle	adverbializer	*	*	20
particle	adverbial	*	*	21
particle	adverbial/conjunctive/final	*	*	22
particle	coordinate	*	*	23
particle	adnominalizer	*	*	24
aux	*	*	*	25
conjunction	*	*	*	26
prefix	adjectival	*	*	27
prefix	numerical	*	*	28
prefix	verbal	*	*	29
prefix	nominal	*	*	30
verb	main	*	*	31
verb	suffix	*	*	32
verb	aux	*	*	33
adverb	miscellaneous	*	*	34
adverb	particle conjunction	*	*	35
noun	verbal	*	*	36
noun	nai adjective	*	*	37
noun	common	*	*	38
noun	quote	*	*	39
noun	adjective	*	*	40
noun	proper	miscellaneous	*	41
noun	proper	person	miscellaneous	42
noun	proper	person	surname	43
noun	proper	person	given name	44
noun	proper	organization	*	45
noun	proper	place	miscellaneous	46
noun	proper	place	country	47
noun	numeral	*	*	48
noun	suffix conjunctive	*	*	49
noun	suffix	verbal	*	50
noun	suffix	miscellaneous	*	51
noun	suffix	adjective	*	52
noun	suffix	classifier	*	53
noun	suffix	aux	*	54
noun	suffix	person	*	55
noun	suffix	place	*	56
noun	suffix	special	*	57
noun	suffix	adverbal	*	58
noun	pronoun	miscellaneous	*	59
noun	pronoun	contraction	*	60
noun	verbal aux	*	*	61
noun	special	aux	*	62
noun	affix	miscellaneous	*	63
noun	affix	adjective	*	64
noun	affix	aux	*	65
noun	affix	adverbial	*	66
noun	adverbial	*	*	67
adnominal	*	*	*	68

For further details, please refer to this resource on MeCab 品詞IDの定義, and also this page on IPA POS codes in Japanese and English.

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