Browsing by Author "Naushad UzZaman,"

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A comprehensive Bangla spelling checker
(BRAC University, 2006) Naushad UzZaman,; Khan, Mumit
We present a comprehensive Bangla spelling checker that improves the quality of suggestions for misspelled words. The complex rules for Bangla spelling presents a significant challenge in producing suggestions for a misspelled word when employing the traditional methods; one must take phonetic similarity into account for suggested alternatives to be reasonably accurate. In Bangla there are several algorithms available for spell checking, however, none of these considers the complex orthographic rules of Bangla. As a result, spelling checker application does not perform well. In this paper, we describe the process of checking the spelling of a Bangla document (i.e. detecting misspelled words, generating suggestions for misspelled word, and ranking the suggestions), compare the methodologies with existing solutions available in the literature, and then propose solutions for each step. Finally, we conclude by showing the performance and evaluation of our proposed solution.
A comprehensive roman (English)-to-Bangla transliteration scheme
(BRAC University, 2006) Naushad UzZaman,; Zaheen, Arnab; Khan, Mumit
A transliteration scheme from Roman (English) to Bangla can help increase the use of Bangla in essential and diverse computing areas such as word processing, Internet and mobile communication and information query and retrieval. The Bangla script’s irregular phonetic nature and its large repertoire of consonant clusters (juktakkhors) create a large gap between the pronunciation and the orthography for a given Bangla word. In this paper, we describe a comprehensive Roman (English)-to-Bangla transliteration scheme that is designed to handle the full complexity of the Bangla script. We apply a phonetic encoding scheme to produce intermediate code-strings that facilitate matching pronunciations of input strings and the desired outputs. We also provide graceful degradation to a more conventional direct phonetic mapping in special circumstances. A prototype of our scheme shows significant success in test cases.
A double metaphone encoding for approximate name searching and matching in Bangla
(BRAC University, 2005) Naushad UzZaman,; Khan, Mumit
Almost any word can be a Bangali name, and the name in turn is often spelled in many different ways, all of which are considered correct and interchangeable. The reason for the spelling complication is two-fold: (1) there is a large gap between the script and pronunciation in Bangla, largely attributed to the large scale Sanskritization process that started in the 12th century and continued throughout the middle ages, and (2) typical Bangla names have very different origins, from the indigenous names derived primarily from Sanskrit, to the imported Muslim names from Persian and Arabic, Christian names from Portuguese, and even the names from popular Western TV soap-operas. However, there is always a large degree of phonetic similarity in the spelling variants of a name, which is the key to searching and matching names in records. We present a Double Metaphone encoding for Bangla names, taking into account the various spelling and phonetic rules in use, which can be used by applications to search for and match names. We encode the spelling variants of a large number of names found in the literature to demonstrate that the encoding does indeed show that the variants of a name are equivalent. A name searching algorithm may employ various figures of merit to narrow the list of possibilities when searching for similar names; we demonstrate one such figure of merit using name encoding and edit distance that has shown good promise.