Deep Learning
Learning paradigm using deep neural networks for automatic feature extraction and prediction.
Classification
- ComplexityHigh
- Impact areaTechnical
- Decision typeArchitectural
- Organizational maturityIntermediate
Technical context
Principles & goals
Use cases & scenarios
Compromises
- Bias in training data leads to unfair predictions.
- Overfitting due to insufficient validation.
- High operational costs due to repeated retraining.
- Use pretrained models and transfer learning for efficiency.
- Version data, code and model artifacts.
- Early monitoring and automated testing of models in production.
I/O & resources
- Representative labeled training data
- Compute resources (GPUs/TPUs) and storage
- Domain knowledge for labeling and evaluation
- Trained model artifact
- Evaluation metrics and test reports
- Deployable inference components
Description
Deep learning is a subset of machine learning that uses multi-layer neural networks to learn hierarchical representations from data. It enables state-of-the-art performance in vision, language and speech by training large models on massive datasets. Practical use requires careful model design, data engineering and substantial compute resources.
✔Benefits
- State-of-the-art performance in many perceptual tasks.
- Automatic feature extraction reduces manual effort.
- Large community and broad ecosystem of tools.
✖Limitations
- Requires large labeled datasets for good generalization.
- High compute and memory requirements for training.
- Models are difficult to interpret.
Trade-offs
Metrics
- Accuracy
Portion of correctly classified examples; basic performance metric.
- Latency per request
Average response time for inference requests in milliseconds.
- Throughput (inferences/s)
Number of concurrent inference requests the system can handle.
Examples & implementations
Image classification in research
Research demonstrates how convolutional networks achieve leading accuracies in image tasks.
Transformer models for translation
Transformer architectures enable powerful translation and language models via self-attention.
Medical image analysis
Deep learning is used to assist diagnosis from radiological images but requires strict validation.
Implementation steps
Define problem, select metrics and success criteria.
Data acquisition, cleaning and annotation.
Model selection, training, validation and hyperparameter tuning.
Optimize for inference and deploy to production environment.
⚠️ Technical debt & bottlenecks
Technical debt
- Unversioned datasets and inconsistent training pipelines.
- Ad-hoc deployment scripts instead of reproducible CI/CD processes.
- Lack of test coverage for model changes and metric regressions.
Known bottlenecks
Misuse examples
- Using deep learning on extremely small datasets without transfer learning.
- Automated decisions in sensitive contexts without auditing.
- Ignoring sources of bias in training data and labels.
Typical traps
- Overreliance on metrics without domain-specific assessment.
- Underestimating the costs of continuous retraining.
- Failing to distinguish correlation from causation.
Required skills
Architectural drivers
Constraints
- • Limited availability of labeled domain data.
- • Budget and energy constraints for training runs.
- • Privacy and compliance requirements (GDPR etc.).