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+# Machine Learning
+
+- [Machine Learning](#machine-learning)
+  - [Amazon Rekognition](#amazon-rekognition)
+  - [Amazon Transcribe](#amazon-transcribe)
+  - [Amazon Polly](#amazon-polly)
+  - [Amazon Translate](#amazon-translate)
+  - [Amazon Lex \& Connect](#amazon-lex--connect)
+    - [Amazon Lex: (same technology that powers Alexa)](#amazon-lex-same-technology-that-powers-alexa)
+    - [Amazon Connect](#amazon-connect)
+  - [Amazon Comprehend](#amazon-comprehend)
+  - [Amazon SageMaker](#amazon-sagemaker)
+  - [Amazon Forecast](#amazon-forecast)
+  - [Amazon Kendra](#amazon-kendra)
+  - [Amazon Personalize](#amazon-personalize)
+  - [Amazon Textract](#amazon-textract)
+  - [Summary](#summary)
+
+## Amazon Rekognition
+
+- Identifies objects, people, text, and scenes in images and videos using ML
+- Facial analysis and facial search for user verification and people counting
+- Create a database of familiar faces or compare against celebrities
+- Key uses:
+  - Labeling
+  - Content Moderation
+  - Text Detection
+  - Face Detection and Analysis (gender, age range, emotions)
+  - Face Search and Verification
+  - Celebrity Recognition
+- More info: [Amazon Rekognition](https://aws.amazon.com/rekognition/)
+
+## Amazon Transcribe
+
+- Converts speech to text using Automatically speech recognition (ASR)
+- Accurate and quick transcription
+- Key uses:
+  - Transcribing customer service calls
+  - Automating closed captioning and subtitling
+  - Generating metadata for media assets for searchable archives
+
+## Amazon Polly
+
+- Turns text into lifelike speech using deep learning
+- Enables creation of talking applications
+
+## Amazon Translate
+
+- Provides natural and accurate language translation
+- Localizes content for international users
+- Efficiently translates large volumes of text
+
+## Amazon Lex & Connect
+
+### Amazon Lex: (same technology that powers Alexa)
+
+- Uses ASR to convert speech to text
+- Natural Language Understanding to recognize text and caller intent
+- Helps build chatbots and call center bots
+
+### Amazon Connect
+
+- Cloud-based virtual contact center
+- Receives calls and creates contact flows
+- Integrates with CRM systems or AWS
+- No upfront payments, 80% cheaper than traditional contact centers
+
+## Amazon Comprehend
+
+- Fully managed and serverless NLP service
+- Uses machine learning to find insights and relationships in text
+- Key features:
+  - Identifies language of the text
+  - Extracts key phrases, places, people, brands, or events
+  - Determines sentiment of the text
+  - Analyzes text using tokenization and parts of speech
+  - Organizes text files by topic
+- Key uses:
+  - Analyzing customer interactions for positive or negative experiences
+  - Grouping articles by topics
+
+## Amazon SageMaker
+
+- Fully managed service for developers / data scientists to build ML models
+- Typically, difficult to do all the processes in one place + provision servers
+- Machine learning process (simplified): predicting your exam score
+
+## Amazon Forecast
+
+- Fully managed service that uses ML to deliver highly accurate forecasts
+- Example: predict the future sales of a raincoat
+- 50% more accurate than looking at the data itself
+- Reduces forecasting time from months to hours
+- Key uses:
+  - Product Demand Planning
+  - Financial Planning
+  - Resource Planning
+
+## Amazon Kendra
+
+- Fully managed document search service powered by ML
+- Extracts answers from various document types (text, PDF, HTML, PowerPoint, MS Word, FAQs)
+- Offers natural language search capabilities
+- Learns from user interactions to promote preferred results
+- Allows manual fine-tuning of search results
+
+## Amazon Personalize
+
+- Fully managed ML service for real-time personalized recommendations
+- Key uses:
+  - Personalized product recommendations
+  - Customized direct marketing
+- Integrates into websites, applications, SMS, email marketing systems
+- Implemented in days, not months
+
+## Amazon Textract
+
+- Automatically extracts text, handwriting, and data from scanned documents using AI and ML
+- Reads and processes various document types (PDFs, images)
+- Key uses:
+  - Financial Services (invoices, financial reports)
+  - Healthcare (medical records, insurance claims)
+  - Public Sector (tax forms, ID documents, passports)
+
+## Summary
+
+- **Rekognition**: Face detection, labeling, celebrity recognition
+- **Transcribe**: Audio to text (e.g., subtitles)
+- **Polly**: Text to audio
+- **Translate**: Language translation
+- **Lex**: Build conversational bots (chatbots)
+- **Connect**: Cloud contact center
+- **Comprehend**: Natural language processing
+- **SageMaker**: Machine learning for developers and data scientists
+- **Forecast**: Accurate forecasts
+- **Kendra**: ML-powered search engine
+- **Personalize**: Real-time personalized recommendations
+- **Textract**: Detect text and data in documents