Search Results for author: Matthew Groh

Found 14 papers, 5 papers with code

Towards Reliable Dermatology Evaluation Benchmarks

1 code implementation13 Sep 2023 Fabian Gröger, Simone Lionetti, Philippe Gottfrois, Alvaro Gonzalez-Jimenez, Matthew Groh, Roxana Daneshjou, Labelling Consortium, Alexander A. Navarini, Marc Pouly

Benchmark datasets for digital dermatology unwittingly contain inaccuracies that reduce trust in model performance estimates.

Augmenting medical image classifiers with synthetic data from latent diffusion models

no code implementations23 Aug 2023 Luke W. Sagers, James A. Diao, Luke Melas-Kyriazi, Matthew Groh, Pranav Rajpurkar, Adewole S. Adamson, Veronica Rotemberg, Roxana Daneshjou, Arjun K. Manrai

While hundreds of artificial intelligence (AI) algorithms are now approved or cleared by the US Food and Drugs Administration (FDA), many studies have shown inconsistent generalization or latent bias, particularly for underrepresented populations.

Attribute Image Generation

Art and the science of generative AI: A deeper dive

no code implementations7 Jun 2023 Ziv Epstein, Aaron Hertzmann, Laura Herman, Robert Mahari, Morgan R. Frank, Matthew Groh, Hope Schroeder, Amy Smith, Memo Akten, Jessica Fjeld, Hany Farid, Neil Leach, Alex Pentland, Olga Russakovsky

A new class of tools, colloquially called generative AI, can produce high-quality artistic media for visual arts, concept art, music, fiction, literature, video, and animation.

Improving dermatology classifiers across populations using images generated by large diffusion models

no code implementations23 Nov 2022 Luke W. Sagers, James A. Diao, Matthew Groh, Pranav Rajpurkar, Adewole S. Adamson, Arjun K. Manrai

Dermatological classification algorithms developed without sufficiently diverse training data may generalize poorly across populations.

Computational Empathy Counteracts the Negative Effects of Anger on Creative Problem Solving

1 code implementation15 Aug 2022 Matthew Groh, Craig Ferguson, Robert Lewis, Rosalind Picard

In an online experiment with 1, 006 participants randomly assigned to an emotion elicitation intervention (with a control elicitation condition and anger elicitation condition) and a computational empathy intervention (with a control virtual agent and an empathic virtual agent), we examine how anger and empathy influence participants' performance in solving a word game based on Wordle.

Towards Transparency in Dermatology Image Datasets with Skin Tone Annotations by Experts, Crowds, and an Algorithm

1 code implementation6 Jul 2022 Matthew Groh, Caleb Harris, Roxana Daneshjou, Omar Badri, Arash Koochek

As a start towards increasing transparency, AI researchers have appropriated the use of the Fitzpatrick skin type (FST) from a measure of patient photosensitivity to a measure for estimating skin tone in algorithmic audits of computer vision applications including facial recognition and dermatology diagnosis.

Identifying the Context Shift between Test Benchmarks and Production Data

no code implementations3 Jul 2022 Matthew Groh

Moreover, we identify three methods for addressing context shift that would otherwise lead to model prediction errors: first, we describe how human intuition and expert knowledge can identify semantically meaningful features upon which models systematically fail, second, we detail how dynamic benchmarking - with its focus on capturing the data generation process - can promote generalizability through corroboration, and third, we highlight that clarifying a model's limitations can reduce unexpected errors.

Benchmarking BIG-bench Machine Learning +6

Human Detection of Political Speech Deepfakes across Transcripts, Audio, and Video

no code implementations25 Feb 2022 Matthew Groh, Aruna Sankaranarayanan, Nikhil Singh, Dong Young Kim, Andrew Lippman, Rosalind Picard

Recent advances in technology for hyper-realistic visual and audio effects provoke the concern that deepfake videos of political speeches will soon be indistinguishable from authentic video recordings.

Face Swapping Human Detection +1

Social influence leads to the formation of diverse local trends

no code implementations17 Aug 2021 Ziv Epstein, Matthew Groh, Abhimanyu Dubey, Alex "Sandy" Pentland

How does the visual design of digital platforms impact user behavior and the resulting environment?

Deepfake Detection by Human Crowds, Machines, and Machine-informed Crowds

1 code implementation13 May 2021 Matthew Groh, Ziv Epstein, Chaz Firestone, Rosalind Picard

The recent emergence of machine-manipulated media raises an important societal question: how can we know if a video that we watch is real or fake?

DeepFake Detection Face Swapping

Evaluating Deep Neural Networks Trained on Clinical Images in Dermatology with the Fitzpatrick 17k Dataset

2 code implementations20 Apr 2021 Matthew Groh, Caleb Harris, Luis Soenksen, Felix Lau, Rachel Han, Aerin Kim, Arash Koochek, Omar Badri

We train a deep neural network model to classify 114 skin conditions and find that the model is most accurate on skin types similar to those it was trained on.

Human detection of machine manipulated media

no code implementations6 Jul 2019 Matthew Groh, Ziv Epstein, Nick Obradovich, Manuel Cebrian, Iyad Rahwan

Here we report on a randomized experiment designed to study the effect of exposure to media manipulations on over 15, 000 individuals' ability to discern machine-manipulated media.

Causal Identification Human Detection

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