Your Stats
0
Total XP
0/24
Badges
0
Day Streak
0
Total Score
0 /5 levels
0 pts
Your task
Easy · 1× ptsYou are auditing a training dataset. Sort each example as Clean or Noisy.
How to play: Read each item, then tap the category it belongs to.
Levels
0 pts
Label: "Cat" — Image shows a clear photo of a tabby cat.
Label: "Dog" — Image is completely black with no visible subject.
Label: "Spam" — Email text: "CONGRATULATIONS!!! You won a free iPhone!!!"
Label: "Positive Review" — Text: "asdfgh jkl 12345 random"
Label: "Stop Sign" — Image shows a red octagonal stop sign on a clear road.
Label: "Healthy" — Medical record is completely empty.
What this means
"Garbage in, garbage out" is the golden rule of AI. A model trained on bad data produces bad results — no matter how clever the algorithm. Data cleaning means finding and removing duplicates, errors, bias, and noise before training. It’s the least glamorous and most important part of AI.