Lesson 2 - Official Topic

[jeremy (Jeremy Howard)]

This is a wiki post - feel free to edit to add links from the lesson or other useful info.

Lesson resources

• Lesson video (private)
• Covid-19 masks video (public)
• fastbook chapter 2
• fastbook Chapter 2 questionnaire solutions - feel free to contribute!
• Non-beginner discussion
• Part 1 (2020) - Weekly Beginner Only Review and Q&A
• Anki deck for Lessons 1 and 2

Links from lesson

• Masks research
• masks4all - from Czech Republic
• Publication “The ASA Statement on p -Values” & article " Null Hypothesis Significance Testing Never Worked"
• Designing great data products
• Bing Image Search API

Deployment guides

• Deploying the Bear Detector app with Flask + Gunicorn + Domain name with SSL certificate, plus Dockerizing the app: https://github.com/fastai/course-v3/blob/master/docs/deployment_flask_gunicorn_docker.md (just sent pull request to correct missing /docs in link to image oops)
• Deployment Platform: SeeMe.ai - the AI marketplace: Easily deploy and share your Fastai (v1 and v2) models on the web, mobile, Python SDK, … We have added support for fastai2 and will continue to support it throughout its development to a stable version.
  We created a fastai2 deployment quick guide, taking you through all the steps of training, deploying, using, and sharing your model with your friends and the world.
  Additional links: Deployment platform: Seeme.ai - wiki topic | Fastai v1 quick guide
• Deployment Platform: Amazon SageMaker. Follow the steps outlined in the following post to train and deploy your fastai2 model with Amazon SageMaker.
• Deployment Platform: Azure Functions. Follow the steps outlined in this Github repo to deploy a trained fastai2 model on Azure cloud’s serverless infrastructure service – the Azure Functions. Welcome your feedback and questions on this topic thread.

Deployment examples

• Bear Detector web app: a Starlette example for deployment in fastai2
• Derotate: a code template for image-to-class and image-to-image fastai2 deployments with web app, mobile app (in Flutter), and a notebook showing how to call the model remotely as an API.
• Bear detector web app deployed with flask: example of the bear detector app deployed with fast.ai v2, flask, gunicorn and nginx

Other useful links

• Lesson Summaries + Things Jeremy Says to do + Qs
• Notes by @Lankinen
• Statistical tests, P values, confidence intervals, and power: a guide to misinterpretations

[wgpubs (WG)]

@rachel : can you add this to the wiki : 2020 Weekly Beginner Only Review (zoom) https://forums.fast.ai/t/part-1-2020-weekly-beginner-only-review-and-q-a/66203?u=wgpubs

Jeremy said I should @ mention you if he forgot to mention it at start of class (maybe add to wiki above).

Thanks

[JPKab (JP Kabler)]

I wonder if the fact that Tennessee has two very large cities is impacting this. Grew up in that area of the country, and Kentucky has lower population density by far. Not questioning the value of these lockdowns, just curious what impacts the greater urbanization of TN would have?
Pay no attention to those morons saying “let people die.” They are a small, loud minority.

[Albertotono]

COVID-19 Global Hackathon 1.0

This is a Nice Global Hackathon if someone is interested.

[chho6822 (Chuan-Hsien)]

Taiwan is 23 million people!
Mask is a must!
We wear masks all the time when in public places, buses, subways, etc.
Masks will safe your life and of your dear family!

[yfrancois (Yann François)]

In Cambodia, if you don’t wear a mask many people will feel offended that you do not respect their health. Especially if you are a Westerner right now…

[Sree (K Sreelakshmi)]

What Are The Best Materials for Making DIY Masks? - Smart Air Filters

[rachel (Rachel Thomas)]

It is linked in the masks4all doc (which is linked in the wiki)

Edited to add: Here is the link https://youtu.be/K5xy2n941jM

[chho6822 (Chuan-Hsien)]

India is going through a lockdown today! Wish the best to all the Indian classmates!

Cheers!

[hiromi (Hiromi Suenaga)]

I started sewing this last week. Simple to make and fits nicely:

A.B. Mask - for a Nurse by a Nurse

[harish3110 (Harish Vadlamani)]

Suggestion: Could these slides be put up as a series of tweets explaining the advantages of using masks to help reduce transmission? Might help convey the message better than sharing the video link…

[Moody (Sarada Lee)]

Check this out

Masks for covid-19

This is a wiki post for discussing creating and sourcing masks. Please add resources, information about sourcing supplies, requests for help, offers of help, or anything else that might be useful. Resources Saving The Mask: requires surgical masks and specialist machinery, but creates “real” reusable masks with a good seal (from @moody) Suggestions based on Cambridge University analysis of effectiveness (Dish Towel can filter 63%!) How to make a Face Mask from Deaconess Health System; basi…

[Albertotono]

Relevant projects to help COVID19. let’s act together

• Neighborexpress.org
• Projectn95.com
• Bailout.nyc
• Covidactnow.org
• Saveourfaves.org

[sgugger]

And masks can be fashionable:

Here the prime minister of Slovakia with her government.

[huitseeker (François)]

Jeremy just advised to check mask fit by verifying it’s making it impossible to smell something with a strong odor. Beware asnomia (loss of smell) is a possible Covid-19 symptom, so do check you’re able to smell without the mask before you perform this test.

[go_go_gadget (Laura Langdon)]

Thank you so much for continuing to perform this service during this horrific time. We all appreciate it, so much.

[init_27 (Sanyam Bhutani)]

A famous actor from India: Shah Rukh Khan (SRK) also made a fun(ny) video spreading awareness about the virus . He too has mentioned the important of masks towards the end.

[ilovescience (Tanishq)]

You can check out the questionnaire solutions over here (in progress):

Fastbook Chapter 2 questionnaire solutions (wiki)

fastbook Chapter 2 solutions (Remaining solutions will be added soon) Here are the questions: Provide an example of where the bear classification model might work poorly, due to structural or style differences to the training data. There are many cases that the bear classification model could fail, especially if these cases were not represented in the training data: The bear is partially obstructed Nighttime images are passed into the model Low-resolution images are passed into the model T…

[jona (Jona R)]

Does the question “How many cats are in this picture?” count as classification or regression?