features.md

Feature documentation

otype

There are the following node types

otype	description
word	logical word. It may be a prefix or suffix attached to a main word
lex	lexeme. These are nodes that are linked to all words with the same lexeme
group	word group. These are the pieces that are separated by spaces
aya	a line of text. This is also section level 2
sura	a book. This is section level 1
juz	a type of section
hizb	a type of section
manzil	a type of section
ruku	a type of section
page	a type of section
sajda	a type of section

oslots

Links every non-word node to all the word nodes it "contains". You do not need this feature directly.

Generic features

name	node type	example values	description
number	all types except lex	1 2 3	the number of the section or word group or word

Section features

name	node type	example values	description
name	sura	الفاتحة البقرة الناس	name of sura in Arabic
nameTrans	sura	Al-Faatiha Al-Baqara An-Naas	name of sura in transcribed Arabic
nameAscii	sura	AlfAtHp Albqrp AlnAs	name of sura in transliterated Arabic
name@en	sura	The Opening The Cow Mankind	name of sura in English
type	sura sajda	Meccan Medinan (suras); recommended obligatory (sajdas)	type of sura
order	sura	5 87 21	ordinal number of sura
translation@en	aya	I serve not what you serve	english translation of whole aya
translation@nl	aya	Ik zal niet dienen wat jullie dienen.	dutch translation of whole aya

Word features: text

name	example values	description
ascii	bi somi n~aAsi	transliterated text of word
unicode	بِ سْمِ نَّاسِ	arabic text of word (uthmani)
space	empty	a single space if the word is followed by a space, else empty

Word/lemma features: lemmatisation

name	node types	example values	description
lemma	word lex	None {som n~aAs	lemma of word; not all words have a lemma
root	word	None smw nws	root of word; not all words have a root
sp	word	None <in~ kaAn	??

Word features: morphology

features with part-of-speech tags

The morphological labels in the source have been converted to more explicit names according to the documentation on Quranic Arabic Corpus, especially part-of-speech tag set and morphological features

There is a rich set of tags for part-of-speech. We have split the tags over two features, pos and posx, where pos contains the primary classification, e.g. noun, particle, and posx contains a subclassification, e.g. proper, cause, certainty.

For a precise division of the original labels into the TF features, see the conversion program, especially the valTrans dictionary.

Besides pos, there are a few other features that have pos tags as values, they have been treated in the same way: a and ax, f and fx, l and lx, w and wx, and n.

name	example values	description
pos	noun particle conjunction	part of speech, main classification
posx	proper negative coordinating	part of speech, refined classification
a	None particle	??
ax	None equalization interrogative	??
f	None particle conjunction	??
fx	None resumption coordinating	??
l	None preposition prefix	??
lx	None emphatic purpose imperative	??
w	None particle conjunction	??
wx	None resumption coordinating	??
n	None emphatic	??

features with nominal morphology

name	example values	description
case	nominative accusative genitive	grammatical case
gn	m f	grammatical gender (masculine, feminine)
nu	s d p	grammatical number (singular, dual, plural)
definite	None 1	definiteness (the value is a number)

features for verb morphology

name	example values	description
formation	II V X	stem formation of a verb
voice	active passive	voice of a verb
tense	perfect participle	tense(like) form of a verb
mood	jussive subjunctive	mood form of a verb
ps	1 2 3	grammatical person (1st, 2nd, 3rd) (the value is a string, not a number)

features for other purposes

name	example values	description
component	prefix stem suffix	role of the word in its word group
interjection	None allahuma	assumes the value 5 times only