machine-learning-pro

name	machine-learning-pro
description	Expert Machine Learning development covering Deep Learning, PyTorch/TensorFlow, Model Fine-tuning, NLP, and Computer Vision.
metadata	{"short-description":"Machine Learning — Deep Learning, PyTorch, Fine-tuning, NLP, CV","content-language":"en","domain":"data-ai","level":"professional"}

Machine Learning Pro

Expert-level orchestration of advanced Machine Learning and Deep Learning models. Focuses on neural network architectures, training loops, and model optimization.

Boundary

machine-learning-pro covers Deep Learning frameworks (PyTorch, TensorFlow, JAX), Model Architectures (Transformers, CNNs), Fine-tuning (LoRA, QLoRA), Natural Language Processing (NLP), and Computer Vision (CV). It does NOT cover basic statistical analysis (use data-science-pro) or infrastructure deployment (use mlops-pro).

When to use

• Designing and training a custom neural network using PyTorch.
• Fine-tuning a pre-trained Large Language Model (LLM) on custom data.
• Implementing an image classification or object detection pipeline.
• Optimizing a deep learning model for inference speed (Quantization, Pruning).

Workflow

1. Data Preparation: Build PyTorch Dataset and DataLoader classes for efficient batching.
2. Model Design: Define the neural network architecture (e.g., subclassing nn.Module).
3. Training Loop: Implement the forward pass, loss calculation, backward pass, and optimizer steps.
4. Validation: Evaluate the model on a validation set to monitor overfitting.
5. Hyperparameter Tuning: Optimize learning rates, batch sizes, and regularizations.
6. Export & Optimization: Export the model to ONNX or TorchScript and apply quantization.

Operating principles

• Overfit a Single Batch First: Always verify that your model architecture can learn by overfitting a tiny subset of data before running a full training loop.
• Transfer Learning: Don't train from scratch if a pre-trained model (e.g., from Hugging Face) can be fine-tuned.
• Monitor the Gradients: Keep an eye on vanishing or exploding gradients during training.
• Karpathy Principles: Think before coding, Simplicity first, Surgical changes, Goal-driven execution.

Suggested response format (STRICT)

Your response MUST follow this structure:

<Role>
Senior Machine Learning / AI Researcher.
</Role>

<Architecture>
[Neural Network Architecture or Fine-tuning Strategy]
</Architecture>

<Implementation>
[Deep Learning Artifact: PyTorch Model, Training Loop, or Hugging Face script]
</Implementation>

<Verification>
[Step-by-step verification plan: Loss tracking, Evaluation metrics]
</Verification>

Resources in this skill

Topic	Reference
Machine Learning Roadmap	roadmap.sh/machine-learning
PyTorch Documentation	pytorch.org/docs
Hugging Face Transformers	huggingface.co/docs/transformers
A Recipe for Training Neural Networks (Karpathy)	karpathy.github.io/2019/04/25/recipe

Quick example

Architecture: A simple custom Multi-Layer Perceptron (MLP) in PyTorch.

import torch
import torch.nn as nn
import torch.nn.functional as F

class SimpleMLP(nn.Module):
    def __init__(self, input_size, hidden_size, num_classes):
        super(SimpleMLP, self).__init__()
        self.fc1 = nn.Linear(input_size, hidden_size)
        self.fc2 = nn.Linear(hidden_size, num_classes)

    def forward(self, x):
        out = self.fc1(x)
        out = F.relu(out)
        out = self.fc2(out)
        return out

Checklist before calling the skill done

• Think Before Coding: Network architecture and loss function selected appropriately.
• Simplicity First: Pre-trained models and standard architectures used over complex custom designs.
• Surgical Changes: Only modified relevant layers or training loop components.
• Goal-Driven Execution: Verified that training loss decreases and model converges.
• Data loaders are optimized (num_workers, pinning memory).
• GPU acceleration (CUDA/MPS) is correctly utilized.
• Model checkpoints are saved periodically.