News from the last week's meeting publications and talk/job opportunities!

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News from last 2 weeks, new meeting time, publications and talk/job opportunities!

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I train a very simple and basic mnist classification network with a lot of overkill: I use minibatching, batch normalization, and save the network weights to disk. This tutorial can be done on a CPU. In Part 2, I restore the model, run on the validation set, and analyze the results.

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See Part 1 first! There, I trained an mnist classifier. Here, I restore the trained network, run the network on the validation script, and do some analysis on the output. This is meant as a template for new users to see "how do I actually use a trained network?" Lots of this information exists elsewhere too, I've just tried to consolidate the basics.

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Here's a report for a naive data rate profiling of ThreadProcessor, larcv's threaded data reader we often use for network training. Measured on my macbook pro early 2013 model (old!) but reproduced similar numbers on dell xps15 (9560).

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List of tutorials covering basics of tensorflow, slim, image classification and semantic segmentation using MNIST images. All notebooks can be run on free Google colaboratory with GPU. No need to own your own GPU machine!

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An example of training a classification network on the 5-particle LArCV training data using pytorch.

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A demonstration to train U-ResNet (convolutional neural network for semantic segmentation) for track/shower separation using a (practice) public data sample (v0.1.0). I show the network's learning curve as well as visualization of how the network's performance improved during the training on a specific track/shower sample image. This notebook can also serve as a generic example of configuring larcv IO to train a semantic segmentation network.

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Browse through the file contents of the first semantic-segmentation data release (v0.1.0). I go over an introduction to semantic-segmentation image analysis task, sample generation configurations, and further cover information that can be used for training algorithms for object detection and even instance-wise semantic segmentation. I also show some physics of the included physics events.

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Browse through the file contents of the first classification data release (v0.1.0). I go over sample generation configurations, dump some images, and analyze particles' kinematic distributions. I cover an important aspect of image filtering that was a part of sample generation.

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