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Bhoop singh Gurjar

AI Deep Explorer | f... • 1d

"A Survey on Post-Training of Large Language Models" This paper systematically categorizes post-training into five major paradigms: 1. Fine-Tuning 2. Alignment 3. Reasoning Enhancement 4. Efficiency Optimization 5. Integration & Adaptation 1️⃣ Fine-Tuning: Adapting AI for Specific Tasks Fine-tuning involves training an LLM on specialized datasets to improve accuracy in domain-specific tasks. 🔹 Types of Fine-Tuning ✓Supervised Fine-Tuning (SFT) – Uses labeled data to train AI for task-specific expertise (e.g., legal, finance, healthcare). ✓Instruction Tuning – Improves how LLMs follow complex prompts and generate structured responses. ✓Reinforcement Fine-Tuning – AI learns dynamically based on rewards or penalties from user interactions. 🔹 Example Use Cases ✅ Fine-tuning an AI chatbot for customer service in banking. 2️⃣ Alignment: Ensuring Ethical AI Behavior AI must align with human preferences to prevent misinformation, bias, or harmful content. 🔹 Key Alignment Methods ✓Reinforcement Learning with Human Feedback (RLHF) – AI learns from human-generated reward signals to improve responses. ✓Direct Preference Optimization (DPO) – AI is trained directly on user preferences rather than just reward models. ✓Reinforcement Learning with AI Feedback (RLAIF) – AI learns by evaluating itself, reducing reliance on human supervision. 🔹 Example Use Cases ✅ Preventing biased or toxic content generation in AI chatbots. 3️⃣ Reasoning Enhancement: Teaching AI to Think More Logically Pre-trained LLMs often struggle with multi-step reasoning, requiring specialized post-training. 🔹 Key Techniques for Reasoning Improvement ✓Chain-of-Thought (CoT) prompting – AI breaks problems into smaller logical steps for better reasoning. ✓Self-Consistency Training – AI verifies its own responses to improve accuracy. ✓Graph-Based Learning – AI models relationships between different concepts for better inferencing. 🔹 Example Use Cases ✅ Improving AI’s math problem-solving ability. 4️⃣ Efficiency Optimization: Making AI Faster & More Cost-Effective AI models are resource-intensive, requiring optimizations to reduce computational costs. 🔹 Key Efficiency Techniques ✓Parameter-Efficient Fine-Tuning (PEFT) – Updates only specific parts of a model instead of retraining everything. ✓LoRA (Low-Rank Adaptation) – Reduces memory usage while maintaining performance. 🔹 Example Use Cases ✅ Running AI models on mobile devices with limited resources. 5️⃣ Integration & Adaptation: Expanding AI’s Capabilities Beyond Text Modern AI systems need to process more than just text—they must understand images, audio, and real-time data. 🔹 Key Multi-Modal AI Techniques ✓Vision-Language Models (VLMs) – AI interprets both text and images simultaneously. ✓Cross-Modal Learning – AI integrates audio, video, and sensor data for broader applications. 🔹 Example Use Cases ✅ AI-powered medical diagnosis using text + image analysis.

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