Search Results for author: Jurek Leonhardt

Found 9 papers, 4 papers with code

Data Augmentation for Sample Efficient and Robust Document Ranking

no code implementations26 Nov 2023 Abhijit Anand, Jurek Leonhardt, Jaspreet Singh, Koustav Rudra, Avishek Anand

We then adapt a family of contrastive losses for the document ranking task that can exploit the augmented data to learn an effective ranking model.

Data Augmentation Document Ranking

Distribution-Aligned Fine-Tuning for Efficient Neural Retrieval

no code implementations9 Nov 2022 Jurek Leonhardt, Marcel Jahnke, Avishek Anand

Dual-encoder-based neural retrieval models achieve appreciable performance and complement traditional lexical retrievers well due to their semantic matching capabilities, which makes them a common choice for hybrid IR systems.

Retrieval

Supervised Contrastive Learning Approach for Contextual Ranking

no code implementations7 Jul 2022 Abhijit Anand, Jurek Leonhardt, Koustav Rudra, Avishek Anand

This paper proposes a simple yet effective method to improve ranking performance on smaller datasets using supervised contrastive learning for the document ranking problem.

Contrastive Learning Data Augmentation +2

Efficient Neural Ranking using Forward Indexes

1 code implementation12 Oct 2021 Jurek Leonhardt, Koustav Rudra, Megha Khosla, Abhijit Anand, Avishek Anand

In this paper, we propose the Fast-Forward index -- a simple vector forward index that facilitates ranking documents using interpolation of lexical and semantic scores -- as a replacement for contextual re-rankers and dense indexes based on nearest neighbor search.

Document Ranking Retrieval +2

Extractive Explanations for Interpretable Text Ranking

1 code implementation23 Jun 2021 Jurek Leonhardt, Koustav Rudra, Avishek Anand

We introduce the Select-and-Rank paradigm for document ranking, where we first output an explanation as a selected subset of sentences in a document.

Document Ranking Retrieval +1

Exploiting Sentence-Level Representations for Passage Ranking

1 code implementation14 Jun 2021 Jurek Leonhardt, Fabian Beringer, Avishek Anand

Recently, pre-trained contextual models, such as BERT, have shown to perform well in language related tasks.

Open-Domain Question Answering Passage Ranking +3

Boilerplate Removal using a Neural Sequence Labeling Model

1 code implementation22 Apr 2020 Jurek Leonhardt, Avishek Anand, Megha Khosla

The extraction of main content from web pages is an important task for numerous applications, ranging from usability aspects, like reader views for news articles in web browsers, to information retrieval or natural language processing.

Information Retrieval Retrieval

Node Representation Learning for Directed Graphs

no code implementations22 Oct 2018 Megha Khosla, Jurek Leonhardt, Wolfgang Nejdl, Avishek Anand

We also unearth the limitations of evaluations on directed graphs in previous works and propose a clear strategy for evaluating link prediction and graph reconstruction in directed graphs.

General Classification Graph Reconstruction +4

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