Search Results for author: Ishaan Bhat

Found 6 papers, 4 papers with code

Effect of latent space distribution on the segmentation of images with multiple annotations

1 code implementation26 Apr 2023 Ishaan Bhat, Josien P. W. Pluim, Max A. Viergever, Hugo J. Kuijf

We propose the Generalized Probabilistic U-Net, which extends the Probabilistic U-Net by allowing more general forms of the Gaussian distribution as the latent space distribution that can better approximate the uncertainty in the reference segmentations.

Generalized Probabilistic U-Net for medical image segementation

1 code implementation26 Jul 2022 Ishaan Bhat, Josien P. W. Pluim, Hugo J. Kuijf

We propose the Generalized Probabilistic U-Net, which extends the Probabilistic U-Net by allowing more general forms of the Gaussian distribution as the latent space distribution that can better approximate the uncertainty in the reference segmentations.

Influence of uncertainty estimation techniques on false-positive reduction in liver lesion detection

1 code implementation22 Jun 2022 Ishaan Bhat, Josien P. W. Pluim, Max A. Viergever, Hugo J. Kuijf

We study the role played by features computed from neural network uncertainty estimates and shape-based features computed from binary predictions in reducing false positives in liver lesion detection by developing a classification-based post-processing step for different uncertainty estimation methods.

Lesion Detection

Using uncertainty estimation to reduce false positives in liver lesion detection

no code implementations12 Jan 2021 Ishaan Bhat, Hugo J. Kuijf, Veronika Cheplygina, Josien P. W. Pluim

We find that the use of a dropout rate of 0. 5 produces the least number of false positives in the neural network predictions and the trained classifier filters out approximately 90% of these false positives detections in the test-set.

Lesion Detection

The GCE in a New Light: Disentangling the $γ$-ray Sky with Bayesian Graph Convolutional Neural Networks

1 code implementation22 Jun 2020 Florian List, Nicholas L. Rodd, Geraint F. Lewis, Ishaan Bhat

In simulated data, our neural network (NN) is able to reconstruct the flux of inner Galaxy emission components to on average $\sim$0. 5%, comparable to the non-Poissonian template fit (NPTF).

A black box for dark sector physics: Predicting dark matter annihilation feedback with conditional GANs

no code implementations1 Oct 2019 Florian List, Ishaan Bhat, Geraint F. Lewis

Traditionally, incorporating additional physics into existing cosmological simulations requires re-running the cosmological simulation code, which can be computationally expensive.

Cosmology and Nongalactic Astrophysics

Cannot find the paper you are looking for? You can Submit a new open access paper.