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Arabic Natural Language Processing
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RDI's Automatic Arabic Phonetic Transcriptor (Diacritizer/Vowelizer)
This large-scale technology takes input crude Arabic text and produces the corresponding fully diacritized text with a word accuracy rate
exceeding 96%, which is vital for Arabic speech technologies; e.g. Arabic TTS.
To achieve such a mission; ArabDiac© is built over RDI's Arabic NLP infrastructure (see below) esp. RDI's Arabic Morphological Analyzer, Arabic PoS Tagger, Arabic Phonetic Grammar, Arabic Text Normalizer
... etc. as rule-based language factorizers. along with extensive statistical processing.
To contexually disambiguate the resulting multiple possible
factorizations (analyses) for each word in i/p text, extensive
dual-mode statistical techniques hybridizing its operation back
and forth on linguistically factorized and un-factorized entity
sequences.
Fore more detailed info, download...
(Arabic PDF,
457 KB)
(WinZipped
Arabic material, 3,940 KB)
(English
PPS, 1,509 KB)
(English PDF, 140 KB)
(English
PDF, 234 KB)
(English PDF, 1421 KB)
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RDI's Arabic Morphological Analyzer
This main RDI’s NLP
core engine is the basis of Arabic morphological analysis,
Arabic PoS tagging, and Arabic Lexical
Semantic Analysis. ArabMorpho© is a morpheme-based lexical
analyzer/synthesizer which distinguishes it from its
vocabulary-based rivals, that boosts its flexibility and
coverage beyond 99.8%.
After morphological rules are exhausted,
deep-horizon dynamic statistical analysis is deployed to realize
disambiguation word accuracy rate exceeding 96%.
Try Online...
Fore more detailed info, download...
(Arabic
Narrated; EXE, 2,400 KB)
(English PDF, 1,992 KB)
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RDI's Arabic Part-of-Speech Tagger
Arabic PoS tags are the essential input features for many
fundamental Arabic NLP process; e.g.'s Syntax Analysis,
Diacritization, ..
The underlying compact Arabic PoS tags set of
RDI's ArabTagger© is originally designed to comply with Arabic
syntax and morphology, which is a major distinctive feature of
this engine over its rivals.
Try Online...
Fore more detailed info, download...
(English PDF, 234 KB)
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RDI's Arabic Lexical Semantic
Analyzer can do four basic lexical semantic functions:
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To retrieve the Arabic
words under a a given semantic field belonging to a
predefined closed set of global semantic fields; i.e.
Forward Mapping.
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To map any given Arabic
word to one or many of the aforementioned pre-defined semantic
fields; i.e. Backward Mapping.
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To retrieve the semantic
relation(s) between a given pair of the semantic fields.
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To infer the semantic fields
related with a given semantic relation to a given semantic field.
These basic functions can be indirectly
deployed to infer the semantic relation(s) between a given pair of
Arabic words, and/or to retrieve the words related with a given semantic
relation to a given Arabic word. These operations are vital ones for
many applications; IR, Text Mining, MT ... etc.
With tens of semantic relations being
defined, and with Arabic NLP tools handling the highly derivative and
inflecive nature of Arabic, this system is heading to be the best Arabic
Lexical Semantic Analyzer regarding the coverage.
For more info ...
(PDF, 602 KB)
(PDF, 665 KB)
(PDF, Arabic Content, 255 KB)
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RDI's Arabic Text Search
Engine
This is RDI's Arabic derivative
text search engine based on RDI's Arabic morphological analyzer;
ArabMorpho©. Search may be done at the root, pattern,
or word level, where single and multiple search queries with
various neighborhoods are possible.
While Swift© Indexing Server can index up to 4G
words, Swift©
Searching Server can handle multi-threaded search queries. SDK's
are available for web, MS-Windows, Linux, .., and any other OS's.
Try Online...
Fore more detailed info, download...
(Arabic Narrated; EXE, 5,636 KB)
(English/Arabic DOC, 112 KB)
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RDI's Arabic Lexical
Dictionaries
Given a text that is
morphologically analyzed using ArabMorpho©, the root,
the pattern, the prefix, and the suffix of any word of this text
can be automatically bound to its corresponding dictionary
entry.
ArabDictions©'s rich
Arabic dictionary entries make it easier for readers - esp. the
junior - to understand Arabic text at all levels.
Fore more detailed info, download...
(Arabic Narrated; EXE, 2,416 KB)
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