What is Recall?Recall kya hai?

🧸 Think of it likeAise samjho

Of all the real fires, how many did the alarm catch? High recall means few fires are missed.Saari asli aag mein se alarm ne kitni pakdi? High recall matlab kam aag chhooti.

📘 ExplainedVistaar se

Recall = true positives ÷ (true positives + false negatives). High recall means few misses, which matters when missing a case is costly, like cancer screening or fraud. Lowering the threshold usually increases recall and lowers precision.Recall = true positives ÷ (true positives + false negatives). High recall matlab kam miss, jo tab zaroori hai jab case miss karna mehenga ho, jaise cancer screening ya fraud. Threshold ghataane se aam taur pe recall badhta aur precision ghatti hai.

💡 Real exampleAsli example

There were 10 frauds and the model caught 8: recall is 80%.10 fraud the aur model ne 8 pakde: recall 80%.

📖 Learn it step by stepStep by step seekho

• Measuring models: accuracy, precision and recallModels ko measure karna: accuracy, precision aur recall

🔗 Related termsJude hue shabd

• PrecisionOf everything the model flagged as positive, the share that really was positive.Model ne jitne positive flag kiye, unme se sach mein positive ka hissa.
• F1 scoreOne number that balances precision and recall.Ek number jo precision aur recall ko balance karta hai.
• ThresholdThe cut off that turns a model's probability into a yes or no decision.Woh cut off jo model ki probability ko haan ya nahi ke faisle mein badalta hai.