Abstract

We investigate the problem of parsing conversational data of morphologically-rich languages such as Hindi where argument scrambling occurs frequently. We evaluate a state-of-the-art non-linear transition-based parsing system on a new dataset containing 506 dependency trees for sentences from Bollywood (Hindi) movie scripts and Twitter posts of Hindi monolingual speakers. We show that a dependency parser trained on a newswire treebank is strongly biased towards the canonical structures and degrades when applied to conversational data. Inspired by Transformational Generative Grammar (Chomsky, 1965), we mitigate the sampling bias by generating all theoretically possible alternative word orders of a clause from the existing (kernel) structures in the treebank. Training our parser on canonical and transformed structures improves performance on conversational data by around 9% LAS over the baseline newswire parser.

Abstract

n this paper, we present a generic semi-supervised Word Sense Disambiguation(WSD) method. Currently, the existingWSD methods extensively use domain re-sources and linguistic knowledge.Ourproposed method extractscontext basedlistsfrom a small sense-tagged and un-tagged training data without using do-main knowledge. Experiments on Hindiand Marathi Tourism and Health domainsshow that it gives good performance with-out using any language specific linguisticinformation except the sense IDs presentin the sense-tagged training set and workswell even with small training data by han-dling the data sparsity issue. Other ad-vantages are that domain expertise is notneeded for crafting and selecting featuresto build the WSD model and it can handlethe problem of non availability of match-ing contexts in sense-tagged training set.It also finds sense IDs of those test wordswhich are not present in sense-tag

Abstract

Sentiment analysis in a resource scarcelanguage is a tedious task. We pro-pose a novel method for transfer learn-ing from a target language to English.Our system doesn’t rely on labeleddata for the target language but in-stead links itself onto already existingand extensively labeled word-level lex-ical resource in English (ESWN1) anda semantic parser. Our proposed sys-tem transparently needs no target lan-guage sentiment corpus, and exploitscomplex linguistic structure of the tar-get language for sentiment prediction.This cross lingual approach gives netaccuracy as 83.6%, an improvement of5.4% over the baseline system.

Abstract

We present an approach for POS tag-ging with out any labeled data. Ourmethod requires translated sentencesfrom a pair of languages. We usedfeature transfer from a resource richlanguage to resource poor languages.Across 8 different Indian Languages,we achieved encouraging accuracieswithout any knowledge of the targetlanguage and any human annotation.This will help us in creating annotatedcorpora for

Abstract

Neural Machine Translation is emerg-ing as the de facto standard for Ma-chine Translation across the globe.Statistical Machine Translation hasbeen the state-of-the-art for translationamong Indian languages. This paperprobes into the effectiveness of NMTfor Indian languages and compares thestrengths and weaknesses of NMT withSMT through a vis-a-vis qualitative es-timation on different linguistic param-eters. We compare the outputs ofboth models for the languages English,Malayalam and Hindi; and test themon various linguistic parameters. Weconclude that NMT works better inmost of the settings, however there isstill immense scope for the bettermentof accuracy for translation of IndianLanguages. We describe the challengesfaces especially when dealing with lan-guages from different language families

Abstract

Data sparsity is a key problem incontemporary neural machine transla-tion (NMT) techniques, especially forresource-scarce language pairs. NMTmodels when coupled with large,high quality parallel corpora providepromising results and are an emergingalternative to phrase-based StatisticalMachine Translation (SMT) systems.A solution to overcome data sparsitycan facilitate leveraging of NMT mod-els across language pairs, thereby pro-viding high quality translations de-spite the lack of large parallel cor-pora. In this paper, we demonstrate athree-phase integrated approach whichcombines weakly supervised and semi-supervised learning with NMT tech-niques to build a robust model usinga limited amount of parallel data. Weconduct experiments for five languagepairs (thereby generating ten systems)and our results show a substantial in-crease in translation quality over abaseline NMT model trained only

Abstract

In this paper, we propose efficient and less resource-intensive strategies for parsing of code-mixed data. These strategies are not constrained by in-domain annotations, rather they leverage pre-existing monolingual annotated resources for training. We show that these methods can produce significantly better results as compared to an informed baseline. Due to lack of an evaluation set for code-mixed structures, we also present a data set of 450 Hindi and English code-mixed tweets of Hindi multilingual speakers for evaluation.

Abstract

Thispaperpresentsourworktoapplynonlinearneuralnetworkforparsingfiver esourcep oorI ndianL anguagesbe-longingtotwomajorlanguagefamilies-Indo-AryanandDravidian.BengaliandMarathiareIndo-AryanlanguageswhereasKannada,TeluguandMalayalambelongtotheDravidianfamily.WhilelittleworkhasbeendonepreviouslyonBengaliandTelugulineartransition-basedparsing,wepresentoneofthefirstparsersforMarathi,KannadaandMalayalam.AlltheIndianlanguagesarefreewordorderandrangefrombeingmoderatetoveryrichinmorphology.Thereforeinthisworkweproposetheusageoflinguisticallymo-tivatedmorphologicalfeatures(suffixandpostposition)inthenonlinearframework,tocapturetheintricaciesofboththelan-guagefamilies.Wealsocapturechunkandgender,number,personinformationelegantlyinthismodel.Weputforwardwaystorepresentthesefeaturescosteffe

Abstract

Hindi and Urdu are spoken primarily in northern India and Pakistan; together, they constitute the third largest language spoken in the world. 1 They are two standard- ized registers of what has been called the Hindustani language, which belongs to the Indo-Aryan language family. Masica [1993] states that, while they are different languages officially, they are not even different dialects or subdialects in a linguistic sense. Rather, they are different literary styles based on the same linguistically defined

Abstract

This paper presents DILTON, a system which solves simple arithmetic word problems. DILTON first predicts the operation that is to be performed (’-’,’+’,’*’,’/’) through a deep neural network based model and then uses it to generate the answer. DILTON divides the question into two parts - world state and query as shown in Figure 1. The world state and the query are processed separately in two different networks and finally the networks are merged to predict the final operation. DILTON learns to predict operations with 8.81 % in a corpus of primary school questions. With simple similarity between the contexts of quantities appearing in the problem and the question text, we are able to identify 92.25 % of relevant quantities and solve 81% of the questions. Our code and data is publicly available