Nina Poerner, Dr. Benjamin Roth
Introduction to Keras
Nina Poerner, Dr. Benjamin Roth
CIS LMU Mu?nchen
Nina Poerner, Dr. Benjamin Roth (CIS LMU Mu?nchen) Introduction to Keras
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Outline
1 Introduction 2 The Sequential Model 3 Compiling 4 Training, Evaluation, Validation
Nina Poerner, Dr. Benjamin Roth (CIS LMU Mu?nchen) Introduction to Keras
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Outline
1 Introduction 2 The Sequential Model 3 Compiling 4 Training, Evaluation, Validation
Nina Poerner, Dr. Benjamin Roth (CIS LMU Mu?nchen) Introduction to Keras
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Keras
Python-based Neural Network library with three backends: tensorflow, CNTK, Theano
Very high-level does much of the hard work for you ... but powerful enough to implement interesting architectures Little redundancy: Architectural details are inferred when possible Reasonable defaults (e.g. weight matrix initialization). Pre-implements many important layers, loss functions and optimizers Easy to extend by defining custom layers, loss functions, etc. Documentation:
Nina Poerner, Dr. Benjamin Roth (CIS LMU Mu?nchen) Introduction to Keras
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Keras vs. PyTorch
graph definition defining simple NNs defining complex NNs training and evaluation convenience (callbacks, ...) debugging + printing
Keras static
PyTorch dynamic
*
*The ignite package contains PyTorch-compatible callbacks
Nina Poerner, Dr. Benjamin Roth (CIS LMU Mu?nchen) Introduction to Keras
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