First officially approved Level 3 self-driving system in Germany.
This is significant because it is the first time an autonomous system that takes the *driving responsibility* from the driver is approved for mass production!
The main difference between Level 2 and Level 3 systems is that self-driving systems become legally responsible for the actions of the cars when in autonomous mode!
All driver assist systems on the market now (including Tesla) are Level 2 systems.
While Waymo and Cruise have Level 4 systems running as a beta in some cities, there are different challenges putting this tech in consumer vehicles and in cars that don't have a huge sensor rack costing tens of thousands of dollars on the roof.
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Sure, the use-cases of Mercedes' system are very limited - it only works in traffic jams on the Autobahn, but if you think about it, these are really the cases where you need self-driving most.
It will be interesting to see how this develops and how accidents are handled!
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Let's talk about a common problem in ML - imbalanced data ⚖️
Imagine we want to detect all pixels belonging to a traffic light from a self-driving car's camera. We train a model with 99.88% performance. Pretty cool, right?
Actually, this model is useless ❌
Let me explain 👇
The problem is the data is severely imbalanced - the ratio between traffic light pixels and background pixels is 800:1.
If we don't take any measures, our model will learn to classify each pixel as background giving us 99.88% accuracy. But it's useless!
What can we do? 👇
Let me tell you about 3 ways of dealing with imbalanced data:
▪️ Choose the right evaluation metric
▪️ Undersampling your dataset
▪️ Oversampling your dataset
▪️ Adapting the loss
The creator and lead dev of the popular NFT exchange Hic Et Nunc on the Tezos blockchain decided to shut down the project. He pulled the plug on the whole website and the official Twitter account.
Yet, the damage is not fatal 👇
How come?
✅ NFTs are fine - they are stored on the blockchain
✅ NFT metadata is fine - stored on IPFS
✅ Exchange backend code is fine - it is in an immutable smart contract
✅ The website is back online - it is open-source, so a clone was deployed by the community fast
👇
Of course, this is a dramatic event and the quick recovery was only possible because of the immense effort of the community. But it is possible and it took basically 1 day.
Imagine the damage that the creator and lead dev could do if they want to destroy a Web 2.0 company!