Coverage Statistics

The ATB3 (Arabic Treebank: Part 3 v1.0) Corpus contains 340,281 tokens, 
of which 47,246 are punctuation, numbers, and Latin strings, and 
293,035 are Arabic word tokens. 

Punctuation, Numbers, Latin strings	47,246
Arabic Word Tokens	               293,035
----------------------------------------------
TOTAL	                               340,281


Of the 293,035 Arabic word tokens, 290,842 (99.25%) were provided 
with an accurate morphological analysis and POS tag by the Buckwalter 
Arabic Morphological Analyzer, and 2,193 (0.75%) Arabic word tokens 
were judged to be incorrectly analyzed, and were flagged with a 
Comment describing the nature of the inaccuracy. (Note that 237 of 
the 2,193 tokens for which no correct analysis was found were found 
to be typos in the original text, so the Analyzer overall accuracy 
rate is actually 99.33%).

Accurately parsed Arabic Word Tokens	290,842	 99.25%
Commented Arabic Word Tokens	          2,193	  0.75%
-------------------------------------------------------
TOTAL	                                293,035	100.00%



The Annotator Comments show that most of the words that were not 
provided with a correct morphological analysis were words missing 
in the Analyzer lexicon (see table below). 

============================================
ANNOTATOR COMMENTS ON ITEMS WITH NO SOLUTION
============================================
NOT_IN_LEXICON (MISC)             796  36.30
NOT_IN_LEXICON ADJ                317  14.46
NOT_IN_LEXICON NOUN               279  12.72
PASSIVE_FORM                      251  11.45
TYPO                              237  10.81
DIALECTAL_FORM                     70   3.19
NOT_IN_LEXICON PLURAL              56   2.55
IMPERATIVE                         49   2.23
NOT_IN_LEXICON FOREIGN WORD        44   2.01
NOT_IN_LEXICON VERB                24   1.09
GRAMMAR_PROBLEM                    13   0.59
NOT_IN_LEXICON ADV                 13   0.59
NOUN_SHOULD_BE_ADJ                 11   0.50
ABBREV                             10   0.46
INTERR_PARTICLE                    10   0.46
NOT_IN_LEXICON DUAL                 9   0.41
ADJ_SHOULD_BE_NOUN                  4   0.18
--------------------------------------------
TOTAL                            2193 100.00
============================================