Fix val.py zero-TP bug

[glenn-jocher]

Resolves #9400

Signed-off-by: Glenn Jocher [email protected]

🛠️ PR Summary

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🌟 Summary

Improved evaluation metric calculations in the validation script.

📊 Key Changes

• Replaced mixed variable dt, p, r, f1, mp, mr, map50, map with separate variables for tp (true positives), fp (false positives), and various performance metrics.
• Isolated the Profile() instances to a standalone variable dt for better code readability.

🎯 Purpose & Impact

• 💡 Clarity: The separation of variables clarifies the purpose of each, making the code more readable and maintainable.
• 🔍 Precision: By distinguishing true positives (tp) and false positives (fp), the script potentially allows for more accurate performance tracking.
• 📈 Performance Evaluation: The update could help both developers and users to better understand and evaluate the model's performance on validation data.
• 🤖 User Experience: Non-expert users may find the performance metrics easier to interpret, contributing to a more user-friendly interface for model evaluation.