Deep Gravity – Telegram
Deep Gravity
393 subscribers
60 photos
35 videos
17 files
495 links
AI

Contact:
DeepL.Gravity@gmail.com
Download Telegram
How to Develop a Cost-Sensitive Neural Network for Imbalanced Classification

After completing this tutorial, you will know:

How the standard neural network algorithm does not support imbalanced classification.
How the neural network training algorithm can be modified to weight misclassification errors in proportion to class importance.
How to configure class weight for neural networks and evaluate the effect on model performance.

Link

🔭 @DeepGravity
A Gentle Introduction to Cross-Entropy for Machine Learning

After completing this tutorial, you will know:

How to calculate cross-entropy from scratch and using standard machine learning libraries.
Cross-entropy can be used as a loss function when optimizing classification models like logistic regression and artificial neural networks.
Cross-entropy is different from KL divergence but can be calculated using KL divergence, and is different from log loss but calculates the same quantity when used as a loss function.

Link
🔭 @DeepGravity
Methods in Computational Neuroscience

Course Date: August 2 – August 28, 2020
Deadline: March 16, 2020

Link

🔭 @DeepGravity
#Microsoft Research Webinar Series

Data Visualization: Bridging the Gap Between Users and Information

Link

🔭 @DeepGravity
Model Zoo
Discover open source deep learning code and pretrained models.

Link

🔭 @DeepGravity
A deep learning system accurately classifies primary and metastatic cancers using passenger mutation patterns

Abstract
In cancer, the primary tumour’s organ of origin and histopathology are the strongest determinants of its clinical behaviour, but in 3% of cases a patient presents with a metastatic tumour and no obvious primary. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, we train a deep learning classifier to predict cancer type based on patterns of somatic passenger mutations detected in whole genome sequencing (WGS) of 2606 tumours representing 24 common cancer types produced by the PCAWG Consortium. Our classifier achieves an accuracy of 91% on held-out tumor samples and 88% and 83% respectively on independent primary and metastatic samples, roughly double the accuracy of trained pathologists when presented with a metastatic tumour without knowledge of the primary. Surprisingly, adding information on driver mutations reduced accuracy. Our results have clinical applicability, underscore how patterns of somatic passenger mutations encode the state of the cell of origin, and can inform future strategies to detect the source of circulating tumour DNA.

Paper

🔭 @DeepGravity