AoC 2022 in pure TensorFlow: day 5. tf.strings, regex, undefined shapes variables and multidimensional indexing

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Hi folks,

slowly, I’m going on with the solution of the Advent of Code 2022 puzzles in pure TensorFlow.

This time, the article is dedicated to a single solution because things are getting more complicated :slight_smile: Check it out!

A deep dive into the tf.strings module, regexp, and some hints for a different solution using variables with undefined shapes!

Moreover, I tried to explain a little bit about how to use tf.meshgrid for creating indexes when working with sparse updates - or at least, I demonstrated how to use it in the hope of sharing knowledge about this way of working with sparse tensors.

Any resharing and feedback are appreciated :slight_smile:

Greetings