EXTRACTING COMPLEX PREDICATES IN HINDI ACROSS PARALLEL CORPORA GUIDE : Prof. Amitabha Mukerjee By : Amit Kumar (10074) Ankit Modi (10104)

INTRODUCTION A Complex Predicate (CP) is a multi-word compound that functions as a single verb Ex : उसने किताब वापस कर दिया मुझे बच्चों के माता-पिताओं के साथ काम करना भी अच्छा लगता है जो कि अक्सर सलाह लेने आते हैं - यह जानकार खुशी होती है कि आप किसी की मदद कर सकते हैं |

INTRODUCTION CP = Word + Light Verb Ex : उसने किताब वापस कर दिया कर दिया (CP) = कर (W) + दिया (LV) A Light Verb is a verb that has little semantic content of its own and it therefore forms a predicate  with some additional expression, which is usually a noun. Ex : देना, लेना, पाना, उठाना

PROBLEM STATEMENT Given a parallel English­Hindi corpora, we have to detect complex predicates  (CPs) Using the fact that a CP is a multi­word expression with its meaning being distinct from the light verb (LV).

MOTIVATION CPs improve expressiveness of a language and Hindi is abundant in it

MOTIVATION CPs improve expressiveness of a language and Hindi is abundant in it Detection of CPs is a tough task

MOTIVATION CPs improve expressiveness of a language and Hindi is abundant in it Detection of CPs is a tough task Their detection provides important resource for tasks such as Wordnet construction, Linguistic analysis etc

Aligned English-Hindi corpus Framework Aligned English-Hindi corpus I also enjoy working with the children's parents who often come to me for advice - it's good to know you can help मुझे बच्चों के माता-पिताओं के साथ काम करना भी अच्छा लगता है जो कि अक्सर सलाह लेने आते हैं - यह जानकार खुशी होती है कि आप किसी की मदद कर सकते हैं |

Framework Search for Hindi LV & its morphological forms Aligned English-Hindi corpus Search for Hindi LV & its morphological forms I also enjoy working with the children's parents who often come to me for advice - it's good to know you can help मुझे बच्चों के माता-पिताओं के साथ काम करना भी अच्छा लगता है जो कि अक्सर सलाह लेने आते हैं - यह जानकार खुशी होती है कि आप किसी की मदद कर सकते हैं |

Framework Aligned English-Hindi corpus Search for Hindi LV & its morphological forms Search for equivalent English meaning of LVs I also enjoy working with the children's parents who often come to me for advice - it's good to know you can help मुझे बच्चों के माता-पिताओं के साथ काम करना भी अच्छा लगता है जो कि अक्सर सलाह लेने आते हैं - यह जानकार खुशी होती है कि आप किसी की मदद कर सकते हैं |

Framework Aligned English-Hindi corpus Search for Hindi LV & its morphological forms Search for equivalent English meaning of LVs Scan left of those LVs whose English meaning is not found I also enjoy working with the children's parents who often come to me for advice - it's good to know you can help मुझे बच्चों के माता-पिताओं के साथ काम करना भी अच्छा लगता है जो कि अक्सर सलाह लेने आते हैं - यह जानकार खुशी होती है कि आप किसी की मदद कर सकते हैं |

Framework Aligned English-Hindi corpus Search for Hindi LV & its morphological forms Search for equivalent English meaning of LVs Collect the Hindi word (W) if it is not a stop word or else keep scanning Scan left of those LVs whose English meaning is not found I also enjoy working with the children's parents who often come to me for advice - it's good to know you can help मुझे बच्चों के माता-पिताओं के साथ काम करना भी अच्छा लगता है जो कि अक्सर सलाह लेने आते हैं - यह जानकार खुशी होती है कि आप किसी की मदद कर सकते हैं |

Framework Aligned English-Hindi corpus Search for Hindi LV & its morphological forms Search for equivalent English meaning of LVs CP = W+LV unless W is an exit word Collect the Hindi word (W) if it is not a stop word or else keep scanning Scan left of those LVs whose English meaning is not found I also enjoy working with the children's parents who often come to me for advice - it's good to know you can help मुझे बच्चों के माता-पिताओं के साथ काम करना भी अच्छा लगता है जो कि अक्सर सलाह लेने आते हैं - यह जानकार खुशी होती है कि आप किसी की मदद कर सकते हैं |

Sample Results As of now, we have extracted 10,000 CPs But we need to add more morphological forms in Hindi LV list.

Code Snapshot

Resources English- Hindi parallel Corpora: http://ufal.mff.cuni.cz/euromatrixplus/downloads.html List of Hindi Light Verbs : Reverse Complex Predicates by Shakthi Poornima, Department of Linguistics, SUNY university of Buffalo Morphological forms of English verbs : http://www.englishpage.com/irregularverbs/irregularverbs.html Morphological forms of Hindi verbs : Extracted from the large Hindi corpus (Blog Corpus)

References [1] Mining Complex Predicates In Hindi Using A Parallel HindiEnglish Corpus, R. Mahesh K. Sinha, IIT Kanpur [2] Detecting Complex Predicates in Hindi using POS Projection across Parallel Corpora, Amitabha Mukerjee, Ankit Soni and Achla M Raina, IIT Kanpur [3] Complex Predicates in Indian Languages and wordnets. Pushpak Bhattacharyya, Debasri Chkrabarti and Vaijayanthi M. Sarma. Language Resources and Evaluation 40(34): 331355 Wikepedia: 1. http://en.wikipedia.org/wiki/Light_verb 2. http://en.wikipedia.org/wiki/Compound_verb

Thank you Questions ?

Other Approaches [2] This problem was solved using word alignment and POS tagging of parallel sentences [3] Derivation of complex predicates has also been dealt with linguistically and computationally CPs had been mined using computational methods and then, were categorized using statistical analysis [Sriram and Joshi, 2005]. Chakrabarti et al (2008) present a method for automatic extraction of CPs only from a corpus based on linguistic features