Updates

2019:

July: Attending spaCy IRL, 2019 in Berlin.
June: Paper accepted at ISWC 2019 research track.
June: Co-organized and presented our tutorial on Question Answering at ESWC 2019.
June: Relocated to Dresden, šŸ‡©šŸ‡Ŗ and started working full time @ Fraunhofer IAIS as a research engineer.
May: Submitted my Thesis and Graduated! šŸŽ‰šŸŽŠšŸŽˆ
March: Submitted "Learning to Rank Query Graphs for KGQA" research paper to ISWC 2019.
Jan: Paper accepted at JURIX 2018.

2018

Dec: Knowledge Graph Question Answering tutorial accepted for ESWC 2019. Visit tutorial page here.
Sept: Submitted paper at JURIX 2018.
June: Co-organized the ESWC 2018 tutorial on Building a Question Answering System Overnight.

2017

Oct: Presented our paper at ISWC 2017. Nominated for best student paper in resource track. Also presented our poster.
Sept: Joined Fraunhofer IAIS as a research assistant. Will continue working with Prof. Jens Lehmann, there.
June: Paper and Poster accepted at ISWC 2017.
sometime: Paper accepted at K-Cap 2017.

2016

Sept: Started my Masters Program at Uni. Bonn, in Computer Science.
Sept: Started working at SDA Lab as a research assistant.
May: Successfully graduated from DA-IICT, šŸ‡®šŸ‡³, successfully completing the B-Tech (ICT) program.

Research Works

Domain Adversarial Training for Recurrent Language Models

Priyansh Trivedi,
Thesis, 2019

I investigate whether the domain shift incurred when transferring the language models on to the target task can be actively bridged using domain adversarial training. The experimental results suggest that it can be beneficial in low resource scenarios, but is redundant on tasks with ample training data.

Introduction to Neural Network based Approaches for Question Answering over Knowledge Graphs

We provide an overview of deep learning approaches for question answering over knowledge graphs where we discuss numerous family of approaches, and the challenges they tackle best. We hope this paper provides an excellent resource to get started with research in the field.

Build a Question Answering System Overnight

Priyansh Trivedi Gaurav Maheshwari, Denis Lukovnikov, Mohnish Dubey, Jens Lehmann
Tutorial @ ESWC 2019, 2019

In this tutorial, we provided the participants with an overview of the field of Question Answering over Knowledge Graphs, insights into commonly faced problems, its recent trends and developments.
Alongwith, a hands-on session aimed at introducing the participants with a barebones implementation of a neural ranking based QA system.

Learning to Rank Query Graphs for Question Answering over Knowledge Graphs

We propose a new neural ranking architecture for predicting the correct logical form given a question. We experiment with this schema using RNN, and Transformers (BERT) based encoders. We also demonstrate that domain adaption is an effective technique to offset the lack of training data in some scenarios.

A Question Answering System on Regulatory Documents

We demonstrate that reading comprehension over large legal documents can be reasonably accomplished using a paragraph selection mechanism, and a neural question answering model.

LC-QuAD: A Corpus for Complex Question Answering over Knowledge Graphs

Priyansh Trivedi, Gaurav Maheshwari, Mohnish Dubey, Jens Lehmann
ISWC, 2017 (Spotlight)

Gold standard Question Answering dataset over DBpedia, with 5,000 datapoints.
And a framework to substantially reduce human efforts involved in making one such.

Over 400 downloads as of Sept 2018.

SimDoc: Topic Sequence Alignment based Document Similarity Framework

Gaurav Maheshwari, Priyansh Trivedi, Harshita Sahijwani, Kunal Jha, Sourish Dasgupta, Jens Lehmann
K-Cap, 2017

Computing document similarity by computing local alignment in the documents' topics, thereby capturing and comparing its thematic flow.

Formal Ontology Learning from English IS-A Sentences

Sourish Dasgupta, Ankur Padia, Gaurav Maheshwari, Priyansh Trivedi, Jens Lehmann
arXiv Preprint, 2018

We create a rule based automatic Description Logics (DL) ontology learner over constrained, unstructured text.
We also propose mechanisms to check the validity of generated ontology.

BitSim: An Algebraic Similarity Measure for Description Logics Concepts

Sourish Dasgupta, Gaurav Maheshwari, Priyansh Trivedi,
arXiv Preprint, 2015

We propose an algebraic similarity measure for assigning semantic similarity score to concept definitions in ALCH+ (a fragment of Description Logics).