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    History (Forward N-Gram) or future (Backward N-Gram)? Which model to consider for N-Gram analysis in Bangla?

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    Date
    2006
    Publisher
    BRAC University
    Author
    Khan, Naira
    Habib, Md. Tarek
    Alam, Md. Jahangir
    Rahman, Rajib
    UzZaman, Naushad
    Khan, Mumit
    Metadata
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    URI
    http://hdl.handle.net/10361/627
    Abstract
    This paper presents a directional advantage of n-gram modeling in terms of backward or forward n-gram modeling in Bangla. The most commonly used n-gram analysis is predominantly a forward n-gram. However in Bangla it appears that a backward n-gram is repeatedly more successful and yields more grammatical results than a forward n-gram. This paper hypothesizes that the rationale behind this success is the syntactic ordering of constituents in Bangla. Bangla is a head-final specifier-initial language as opposed to English, which is head-initial specifier-initial. Hence in Bangla, the head comes after its argument in a phrase. If an n-gram analysis begins with a head and moves backwards it will stretch to its own argument but if you move for-wards then you'll probably grab the argument of an-other head. As probability of occurrence of heads is higher, probability of depending on a head is also higher and hence a backward n-gram will probably have a greater chance of yielding grammatical results. We carried out several experiments to compare different directional results in different applications with an advantage in the backward direction. This will prove a useful linguistic insight in terms of n-gram based analysis depending upon variations of constituent analysis.
    Keywords
    N-Gram analysis
    Description
    Includes bibliographical references (page 5).
    Department
    Center for Research on Bangla Language Processing, BRAC University
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    • Conference Papers (Centre for Research on Bangla Language Processing)

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