GSP634

Overview

In other labs the Fashion MNIST dataset is used to train an image classifier. In this case you had images that were 28x28 where the subject was centered. In this lab you'll take this to the next level, training to recognize features in an image where the subject can be anywhere in the image!

You'll do this by building a horses-or-humans classifier that will tell you if a given image contains a horse or a human, where the network is trained to recognize features that determine which is which.

Objectives

In this lab, you will learn how to:

• Look at the the starting model
• Add convolutions, gather the data, and define the model
• Compile and train the model
• Visualize the Convolutions and pooling

Prerequisites

Although this is a self-standing lab, to maximize your learning, consider taking the lab, Classify Images with TensorFlow Convolutional Neural Networks.

Setup and requirements

Before you click the Start Lab button

Read these instructions. Labs are timed and you cannot pause them. The timer, which starts when you click Start Lab, shows how long Google Cloud resources will be made available to you.

This hands-on lab lets you do the lab activities yourself in a real cloud environment, not in a simulation or demo environment. It does so by giving you new, temporary credentials that you use to sign in and access Google Cloud for the duration of the lab.

To complete this lab, you need:

• Access to a standard internet browser (Chrome browser recommended).

Note: Use an Incognito or private browser window to run this lab. This prevents any conflicts between your personal account and the Student account, which may cause extra charges incurred to your personal account.

• Time to complete the lab---remember, once you start, you cannot pause a lab.

Note: If you already have your own personal Google Cloud account or project, do not use it for this lab to avoid extra charges to your account.

How to start your lab and sign in to the Google Cloud console

1. Click the Start Lab button. If you need to pay for the lab, a pop-up opens for you to select your payment method. On the left is the Lab Details panel with the following:

   • The Open Google Cloud console button
   • Time remaining
   • The temporary credentials that you must use for this lab
   • Other information, if needed, to step through this lab

2. Click Open Google Cloud console (or right-click and select Open Link in Incognito Window if you are running the Chrome browser).

   The lab spins up resources, and then opens another tab that shows the Sign in page.

   Tip: Arrange the tabs in separate windows, side-by-side.

   Note: If you see the Choose an account dialog, click Use Another Account.

3. If necessary, copy the Username below and paste it into the Sign in dialog.

   {{{user_0.username | "Username"}}}

   You can also find the Username in the Lab Details panel.

4. Click Next.

5. Copy the Password below and paste it into the Welcome dialog.

   {{{user_0.password | "Password"}}}

   You can also find the Password in the Lab Details panel.

6. Click Next.

   Important: You must use the credentials the lab provides you. Do not use your Google Cloud account credentials. Note: Using your own Google Cloud account for this lab may incur extra charges.

7. Click through the subsequent pages:

   • Accept the terms and conditions.
   • Do not add recovery options or two-factor authentication (because this is a temporary account).
   • Do not sign up for free trials.

After a few moments, the Google Cloud console opens in this tab.

Note: To view a menu with a list of Google Cloud products and services, click the Navigation menu at the top-left.

Activate Cloud Shell

Cloud Shell is a virtual machine that is loaded with development tools. It offers a persistent 5GB home directory and runs on the Google Cloud. Cloud Shell provides command-line access to your Google Cloud resources.

1. Click Activate Cloud Shell at the top of the Google Cloud console.

When you are connected, you are already authenticated, and the project is set to your Project_ID, . The output contains a line that declares the Project_ID for this session:

Your Cloud Platform project in this session is set to {{{project_0.project_id | "PROJECT_ID"}}}

gcloud is the command-line tool for Google Cloud. It comes pre-installed on Cloud Shell and supports tab-completion.

2. (Optional) You can list the active account name with this command:

gcloud auth list

3. Click Authorize.

Output:

ACTIVE: * ACCOUNT: {{{user_0.username | "ACCOUNT"}}} To set the active account, run: $ gcloud config set account `ACCOUNT`

4. (Optional) You can list the project ID with this command:

gcloud config list project

Output:

[core] project = {{{project_0.project_id | "PROJECT_ID"}}} Note: For full documentation of gcloud, in Google Cloud, refer to the gcloud CLI overview guide.

Task 1. Enable Google Cloud services

• In Cloud Shell, use gcloud to enable the services used in the lab

gcloud services enable \ compute.googleapis.com \ monitoring.googleapis.com \ logging.googleapis.com \ notebooks.googleapis.com \ aiplatform.googleapis.com \ artifactregistry.googleapis.com \ container.googleapis.com

This will allow access to running model training, deployment, and explanation jobs with Vertex AI.

Click Check my progress to verify the objective. Enable Google Cloud services

Task 2. Deploy Vertex Notebook instance

For this lab, a Vertex Notebook instance configured with JupyterLab and many machine learning frameworks has been pre-provisioned for you.

Navigate to it and and open it:

1. In the Cloud Console, navigate to Vertex AI > Workbench.

2. Go to User-managed-notebooks.

3. Click OPEN JUPYTERLAB next to the name of your pre-provisioned Vertex Notebook instance. It may take a few minutes for the OPEN JUPYTERLAB option to appear.

Task 3. Navigate to lab notebook

1. In your Vertex Notebook, navigate to the following directory:

training-data-analyst/self-paced-labs/learning-tensorflow/convolutions-with-complex-images/

2. Open CLS_Vertex_AI_CNN_horse_or_human.ipynb

3. Continue the lab in the notebook, and run each cell by clicking the Run ( ) icon at the top of the screen. Alternatively, you can execute the code in a cell with SHIFT + ENTER.

Read the narrative and make sure you understand what's happening in each cell.

In order to view the status of training and deployment on Vertex AI, you can follow the instructions in the notebook containing illustrations.

Check your progress on notebook

Create a Cloud Storage Bucket

Note: While creating the bucket change the REGION that has been assigned to you in the student resource panel.

Click Check my progress to verify whether the bucket is created. Create a Cloud Storage Bucket

Train the Model on Vertex AI

Click Check my progress to verify the objective. Train the Model on Vertex AI

Copy the Batch Prediction Results

Click Check my progress to verify the objective. Copy the Batch Prediction Results

Congratulations!

In this lab, you used convolution to identify features in an image where the subject could be anywhere in the image!

Next steps / learn more

• Check out the Tensorflow documentation on ImageDataGenerator
• Learn more about the at Keras DataGenerator.

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Manual Last Updated February 26, 2024

Lab Last Tested February 26, 2024

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