Information Retrieval

Enhancing clinical information retrieval on health forums using neural ranking models

Since health forums become a rich source of information to people with medical conditions discussing treatments, doctor's opinions, side-effects to complex-drugs, while also sharing personal background medical information in a community question-answering framework, we develop a neural search engine on top of such health forums by exploring the state-of-the-art neural ranking models. We first write a set of optimal heuristic functions that maximizes the relevancy scores for a labelled dataset by training a snorkel classifier that classifies a given query-document pair as relevant or irrelevant. Later, these functions are extended to classify the unlabelled set of query-document pairs, followed by re-ranking using neural re-rankers.

Music Information Retrieval For Genre Classification

We implement k-nearest neighbors, Gaussian Mixture Model, Multi-class SVM, Convolutional Neural Network, and Convolutional Recurrent Neural Network to classify the following four genres- Dark-Forest, Hi-Tech, Full-On, and Goa. We further extract 30 temporal features using a Long Short Term Memory based Auto encoder from individual frames, and augment them with the frame-level audio features, which is a novel contribution in this work.