asos / dsf2020

Data Science Festival Workshop 7 November 2020 – Building a fashion recommender using Tensorflow/Keras with ASOS.

Data Science Festival X ASOS

Data Science Festival Workshop 7 November 2020 – Building a fashion recommender using Tensorflow/Keras with ASOS.

First we will build a recommender model together in Google Colab. Then we will deploy the model into production.

Before the workshop you can open the notebook by visiting Google Colab and clicking on 'File/Open Notebook'. In the orange window that opens click on "GitHub". Then in the 'Enter a GitHub URL or search by organization or user' line enter 'asos/dsf2020'. Finally click on "DSF-ASOS_Build_and_Deploy_a_Recommender_in_3_Hours.ipynb".

A note about the data

This repo contains four data files which will be used for training a recommender model. They contain product ids and fake user ids.

Serving a fashion recommender using Tensorflow serving

About Tensorflow serving

Tesnorflow serving is a flexible, high performance serving system for machine learning models.

Tensorflow serving serves model without running original Python code.

In order to serve a Tensorflow model, SavedModel is exported from a Python program.

A SavedModel contains a complete TensorFlow program, including weights and a graph definitions.

The recommended way of running Tensorflow serving is with Docker image.

Environment setup

• docker engine installed and running to run a serve General installation instructions are on the Docker site, but some quick links here: Docker for macOS Docker for Windows
• http client installed to run a client Curl for mac

Running tensorflow serving in local Docker container

CMD 1

cd {recommender-model-folder}

CMD 2

docker pull tensorflow/serving

CMD 3

_**Windows**_

docker run -d -p 8501:8501 -v "$PWD/:/models/recommender" -e MODEL_NAME=recommender tensorflow/serving

_**Mac**_

docker run -d -p 8501:8501 --mount type=bind,source=${PWD}/,target='/models/recommender' -e MODEL_NAME=recommender tensorflow/serving

CMD 4

_**Windows**_

$rec_request = @"
{
"signature_name" : "call_item_item",
"inputs" : {
"item": [123123]
}
}
"@


$rec_response = Invoke-RestMethod -Uri "http://localhost:8501/v1/models/recommender:predict" -Method Post -Body $rec_request -ContentType "application/json"
$rec_response | convertto-json

_**Mac**_
curl --header "Content-Type: application/json" --request POST --data '{"signature_name":"call_item_item","inputs": {"item": [123123] } }' http://localhost:8501/v1/models/recommender:predict

CMD 5

_**Windows**_

$output = Invoke-RestMethod http://localhost:8501/v1/models/recommender/metadata
$output | convertto-json

_**Mac**_

curl http://localhost:8501/v1/models/recommender/metadata

dsf2020's Issues

tensorflow version used

Hi

When I run this in colab or my own docker instance I get syntax error

  File "<ipython-input-9-c352dfa2f358>", line 9
    self.user_embedding = tf.keras.layers.Embedding(len(dummy_users), ?)
                                                                      ^
SyntaxError: invalid syntax

Did you you a specific tensorflow version or tensorflow docker image?

Tensorflow Serving not returning any result due to node embedding issue

I am using the model.zip given by the mentors . However when I do a curl post of a product I am getting an error
related to embedding and lookup .

Can you help me please solve this problem .
Thanks !