Search Results for author: Justus Mattern

Found 9 papers, 4 papers with code

FANG-COVID: A New Large-Scale Benchmark Dataset for Fake News Detection in German

1 code implementation EMNLP (FEVER) 2021 Justus Mattern, Yu Qiao, Elma Kerz, Daniel Wiechmann, Markus Strohmaier

As the world continues to fight the COVID-19 pandemic, it is simultaneously fighting an ‘infodemic’ – a flood of disinformation and spread of conspiracy theories leading to health threats and the division of society.

Fake News Detection

Membership Inference Attacks against Language Models via Neighbourhood Comparison

1 code implementation29 May 2023 Justus Mattern, FatemehSadat Mireshghallah, Zhijing Jin, Bernhard Schölkopf, Mrinmaya Sachan, Taylor Berg-Kirkpatrick

To investigate whether this fragility provides a layer of safety, we propose and evaluate neighbourhood attacks, which compare model scores for a given sample to scores of synthetically generated neighbour texts and therefore eliminate the need for access to the training data distribution.

Smaller Language Models are Better Black-box Machine-Generated Text Detectors

no code implementations17 May 2023 Niloofar Mireshghallah, Justus Mattern, Sicun Gao, Reza Shokri, Taylor Berg-Kirkpatrick

With the advent of fluent generative language models that can produce convincing utterances very similar to those written by humans, distinguishing whether a piece of text is machine-generated or human-written becomes more challenging and more important, as such models could be used to spread misinformation, fake news, fake reviews and to mimic certain authors and figures.

Misinformation

Psychologically-Inspired Causal Prompts

1 code implementation2 May 2023 Zhiheng Lyu, Zhijing Jin, Justus Mattern, Rada Mihalcea, Mrinmaya Sachan, Bernhard Schoelkopf

In this work, we take sentiment classification as an example and look into the causal relations between the review (X) and sentiment (Y).

Sentiment Analysis Sentiment Classification

Unique Identification of 50,000+ Virtual Reality Users from Head & Hand Motion Data

1 code implementation17 Feb 2023 Vivek Nair, Wenbo Guo, Justus Mattern, Rui Wang, James F. O'Brien, Louis Rosenberg, Dawn Song

With the recent explosive growth of interest and investment in virtual reality (VR) and the so-called "metaverse," public attention has rightly shifted toward the unique security and privacy threats that these platforms may pose.

Understanding Stereotypes in Language Models: Towards Robust Measurement and Zero-Shot Debiasing

no code implementations20 Dec 2022 Justus Mattern, Zhijing Jin, Mrinmaya Sachan, Rada Mihalcea, Bernhard Schölkopf

Generated texts from large pretrained language models have been shown to exhibit a variety of harmful, human-like biases about various demographics.

Benchmarking

Differentially Private Language Models for Secure Data Sharing

no code implementations25 Oct 2022 Justus Mattern, Zhijing Jin, Benjamin Weggenmann, Bernhard Schoelkopf, Mrinmaya Sachan

To protect the privacy of individuals whose data is being shared, it is of high importance to develop methods allowing researchers and companies to release textual data while providing formal privacy guarantees to its originators.

Language Modelling

The Limits of Word Level Differential Privacy

no code implementations Findings (NAACL) 2022 Justus Mattern, Benjamin Weggenmann, Florian Kerschbaum

As the issues of privacy and trust are receiving increasing attention within the research community, various attempts have been made to anonymize textual data.

Sentence Text Anonymization +1

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