Nihar Vanjara

Experience

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  HCL Infosystems Ltd.

  May 2013 - Jul 2013

  Software Developer Intern
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  Computational Biomedicine Lab, RIT

  Jan 2017 - Dec 2017

  Researcher

  • Assisted in designing and implementing data-driven models at the Computational Biomedicine Lab at RIT to solve health domain problems.• Suggested and presented state of the art deep learning ideas to solve the problem of classifying unstructured electrocardiogram signals.• Improved performance of a hybrid deep learning architecture comprising of Convolutional Neural Networks and Long Short-Term Memory Model by 10%. The improved model showed better performance than previous traditional machine learning models.• Worked on feature engineering and addressing issues related to highly unbalanced (non-uniformly distributed) datasets. Show less

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  Cisco

  Jan 2019 - Nov 2019

  Data Scientist

  ● Designed, Implemented and fine-tuned Deep Bidirectional Transformer networks (BERT) and XLNet for the task of classifying sentiments of Customer Feedbacks and Net Promoter Score data. Set up training, testing and validation pipelines for modelling training and fine tuning. ● Successfully improved the performance by 3 % on the sentiment classification task by using data augmentation. ● Experimented with different NLP techniques (Word Embeddings, LSTM seq2seq paraphrase models ) to increase the training dataset in order to improve the performance of the sentiment classification task on the test data. ● Helped in designing the guidelines for data labelling for internal Cisco Data for sentiment classification and labelled Cisco internal data. ● Set up evaluation environments for speech-to-text libraries (IBM, Google, Kaldi) for evaluating their performance on customer feedback recordings. Show less

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  Walmart Global Tech

  Nov 2019 - Jun 2023

  Data Scientist