Cource: Natural Language Processing

1a) Find a target language sentence in English for the given source language in Bengali using the corpus-based approach.

Source sentence-I: Target sentence-II: They are playing.

Source sentence-II: Target sentence-II: Farmers are working in the paddy field.

Source sentence-III: Target sentence-III: Boys are playing cricket in the field.

Source sentence-IV: Target sentence-IV: They repair football in the shop.

Source sentence-V: Target sentence-V: They buy paddy from the shop.

Source language sentence: Target language sentence: ??? [ ]

1b) Find the lexical translation probabilities of the foreign words a, b, c, d, e from the following bilingual corpora using the statistical approach. Also find the best translation for the foreign sentence, cde calculating the lexical translation probability in IBM Model-I

Foreign Sentences	Target Sentences
a b c d e	X Y Z P Q
a b c c d	X Y Z Z R
a c d d b	M K R P N
a e e b e	M Q O Y T

1c) Show an alignment function for the following cases where the source and target languages are English and Bengali, respectively.

Reordering. One to many. Dropping words. Inserting words.