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205What Are Embeddings?
206Vector Spaces and Similarity
207Dimensionality in Embeddings
208Token vs Sentence vs Document Embeddings
209Embedding Space Properties
210Contextual vs Static Embeddings
211Multilingual and Cross-lingual Embeddings
212Normalization and Preprocessing
213Limitations of Embeddings
214Embeddings vs Full-Text Search
215OpenAI Embeddings API Overview
216Cohere and Anthropic Embedding APIs
217Sentence Transformers Library
218Hugging Face Embedding Models
219Model Selection Criteria
220Batch Processing for Embeddings
221Embedding API Cost Management
222Multilingual Embedding Models
223Specialized Domain Embeddings
224Caching and Storage Patterns
225What is Semantic Search?
226The Semantic Search Pipeline
227Computing Cosine Similarity
228Dot Product vs Cosine Similarity
229Building a Simple In-Memory Search
230Batch Encoding Documents
231Top-K Retrieval Implementation
232Handling Large Document Collections
233Query Preprocessing and Normalization
234Adding Metadata Filtering
235Similarity Score Thresholds
236Evaluating Search Quality
237Measuring Embedding Quality
238Common Embedding Problems
239When to Fine-tune Embeddings
240Contrastive Learning for Embeddings
241Preparing Training Data
242Fine-tuning with Sentence Transformers
243Evaluating Fine-tuned Embeddings
244Deployment and Version Management

205What Are Embeddings?
206Vector Spaces and Similarity
207Dimensionality in Embeddings
208Token vs Sentence vs Document Embeddings
209Embedding Space Properties
210Contextual vs Static Embeddings
211Multilingual and Cross-lingual Embeddings
212Normalization and Preprocessing
213Limitations of Embeddings
214Embeddings vs Full-Text Search
215OpenAI Embeddings API Overview
216Cohere and Anthropic Embedding APIs
217Sentence Transformers Library
218Hugging Face Embedding Models
219Model Selection Criteria
220Batch Processing for Embeddings
221Embedding API Cost Management
222Multilingual Embedding Models
223Specialized Domain Embeddings
224Caching and Storage Patterns
225What is Semantic Search?
226The Semantic Search Pipeline
227Computing Cosine Similarity
228Dot Product vs Cosine Similarity
229Building a Simple In-Memory Search
230Batch Encoding Documents
231Top-K Retrieval Implementation
232Handling Large Document Collections
233Query Preprocessing and Normalization
234Adding Metadata Filtering
235Similarity Score Thresholds
236Evaluating Search Quality
237Measuring Embedding Quality
238Common Embedding Problems
239When to Fine-tune Embeddings
240Contrastive Learning for Embeddings
241Preparing Training Data
242Fine-tuning with Sentence Transformers
243Evaluating Fine-tuned Embeddings
244Deployment and Version Management

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Lesson 240 of 1,886·6. Embeddings and Semantic SearchPro lesson

Contrastive Learning for Embeddings

Learn the fundamentals of contrastive learning: positive/negative pairs and how models learn to cluster similar items.

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