
05/07/2023 06:38 PM 975
What Does an AI Engineer Do?
- Supervised learning: The algorithm is trained using labeled data, meaning data that has been previously tagged with the right outputs. The algorithm can then apply what it has learned to new unlabeled data. This is useful for classification and prediction tasks. For example, an AI engineer could use supervised learning to create an algorithm that analyzes images and identifies whether there is a dog in the image or not.
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- Reinforcement learning: The algorithm learns by interacting with its environment and receiving feedback in the form of rewards or penalties. It learns to optimize its actions to maximize the reward. Reinforcement learning is behind technologies like self-driving cars. The AI engineer programs driving rules but allows the algorithm to learn from experience on the road.
In addition to developing machine learning models, AI engineers are also responsible for preparing data for the models. Real-world data is often messy and needs preprocessing before it can be fed to algorithms. Data preprocessing tasks include:
- Feature selection: Selecting the most relevant attributes in the data for the model.
- Data transformation: Converting data into appropriate formats and normalizing values.
- Data augmentation: Techniques like cropping, flipping, and adding noise to expand and enhance training data.
Ongoing model validation and monitoring is another important duty. AI engineers need to analyze systems to monitor their performance and make necessary adjustments to ensure the project stays on track. They must be quick thinkers, able to identify potential problems before they occur and develop solutions to keep the project moving forward.
- Setting evaluation metrics: Choose metrics like accuracy, precision, recall, F1 score that align with project goals.
- Monitoring for bias: Check for unfair bias in model predictions across different demographics.
- Tracking model performance: Monitor precision and accuracy over time as conditions change.
- Updating models: Retrain models on new data to keep predictions relevant.
- Model optimization: Tune model hyperparameters and architecture for improved performance.
- Error analysis: Investigate why models make certain mistakes and address weaknesses.
Some of the key concepts in speech recognition that AI engineers work with include:
- Acoustic modeling: Recognizing speech sounds and mapping them to words. AI engineers build statistical models analyzing speech audio.
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- Speech databases: Massive collections of audio clips needed to train models, labeled with corresponding text.
- Natural language processing (NLP): Understanding speech in context using AI to analyze grammar, meanings, and sentiment.
- Neural networks: Deep learning models that excel at processing speech data. Engineers optimize network architecture for accuracy.
- Beam search decoding: Generated multiple probable transcriptions and pruning down to get the best predictions.
- SQL and NoSQL databases: Storing and querying large datasets efficiently.
- Data pipelines: Moving and transforming data through various processing steps.
- Cloud computing: Leveraging scalable cloud platforms like AWS, GCP, Azure.
- Data visualization: Using charts, graphs, and plots to extract insights.
- Feature engineering: Creating new attributes from raw data to help models.
- Statistical analysis: Applying methods like regression, clustering, decision trees.
AI engineers working in robotics need expertise in areas such as:
- Sensor fusion: Combining data from vision, lidar, radar, and other sensors.
- Motion planning: Enabling robots to navigate environments and avoid obstacles.
- Computer vision: Allowing robots to perceive and understand visual data.
- Natural language processing: Enabling verbal communication between robots and humans.
- Reinforcement learning: Programming robots to learn from experience.
- Robotic mechanics: Designing physical robots optimized for specific tasks.
Here are some of the key soft skills and abilities needed to thrive as an AI engineer:
- Creativity: Devising clever new approaches and techniques.
- Problem-solving: Tackling challenges methodically and strategically.
- Collaboration: Working closely with data scientists, engineers, product teams.
- Communication: Explaining complex concepts clearly to various audiences.
- Ethics: Ensuring AI is deployed responsibly and ethically.
- Agility: Continuously learning and adapting to stay relevant.
- Patience: Persisting through lengthy development, testing, and training cycles.
- Attention to detail: Catching subtle bugs that can undermine model performance.
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