Machine learning ਦੀਆਂ ਤਿੰਨ ਮੁੱਖ ਕਿਸਮਾਂ ਹਨ — supervised learning (labeled examples ਤੋਂ ਸਿੱਖਣਾ), unsupervised learning (unlabeled data ਵਿੱਚ patterns ਲੱਭਣਾ), ਅਤੇ reinforcement learning (trial ਅਤੇ reward ਰਾਹੀਂ ਸਿੱਖਣਾ)। ਇਹਨਾਂ ਨੂੰ ਸਮਝਣਾ ਸਪੱਸ਼ਟ ਕਰਦਾ ਹੈ ਕਿ ML ਵੱਖ-ਵੱਖ ਸਮੱਸਿਆਵਾਂ ਨੂੰ ਕਿਵੇਂ ਹੱਲ ਕਰਦਾ ਹੈ।
ਤਿੰਨ ਮੁੱਖ ਕਿਸਮਾਂ
SUPERVISED LEARNING → learn from LABELED data (input → known correct output):
→ trained on examples with answers → learns to predict outputs for new inputs
→ for: classification (categorize), regression (predict numbers)
→ e.g. spam detection (labeled spam/not-spam), price prediction
UNSUPERVISED LEARNING → find patterns in UNLABELED data (no given answers):
→ discovers structure/groupings on its own
→ for: clustering (group similar items), dimensionality reduction, anomaly detection
→ e.g. customer segmentation, finding patterns
REINFORCEMENT LEARNING → learn through TRIAL and ERROR with REWARDS:
→ an agent takes actions, gets rewards/penalties, learns to maximize reward over time
→ for: game playing, robotics, control, decision-making
