Artificial Intelligence (AI) Interview Questions and Answers | AI Interview Preparation | Edureka

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11 Apr 2019106:08

TLDRIn this informative session, Lake Hoff from Edureka discusses the fundamentals and applications of Artificial Intelligence (AI) in the context of interview preparation. The presentation is structured into basic, intermediate, and scenario-based levels of AI interview questions. Hoff explains the evolution and differences among AI, Machine Learning, and Deep Learning, and their roles in data science. He delves into the practical applications of AI, such as Google's search engine, and outlines various types of AI, including reactive machines, limited memory AI, and self-aware AI. The discussion also covers domains of AI like machine learning, neural networks, robotics, and natural language processing. Hoff further explores machine learning types, including supervised, unsupervised, and reinforcement learning, and their applications. He introduces Q-learning and Deep Learning, explaining neural networks and their layers. The session also touches on Bayesian networks, the Turing test, and the importance of hyperparameter optimization in neural networks. Hoff addresses common issues like overfitting and its prevention, the role of deep learning frameworks, and the distinction between NLP and text mining. The video concludes with applications of AI in targeted marketing, fraud detection, loan approval predictions, and the potential of AI in agriculture for disease detection in crops.

Takeaways

  • 📚 Artificial Intelligence (AI) is crucial for structuring and analyzing the massive amounts of data generated in the digital age, which is essential for business growth.
  • 🤖 AI represents simulated intelligence in machines, while Machine Learning (ML) allows machines to make decisions without explicit programming, using data.
  • 🧠 Deep Learning involves using artificial neural networks to solve complex problems by mimicking the human brain's neural networks.
  • 🔍 Google's search engine is a prevalent example of AI in daily use, providing quick and relevant search results through machine learning algorithms.
  • 🧐 Different types of AI include Reactive Machines, Limited Memory AI, Theory of Mind AI, Self-Aware AI, Artificial Narrow Intelligence, and Artificial General Intelligence.
  • 📈 Machine Learning is a subset of AI, with three types: Supervised Learning, Unsupervised Learning, and Reinforcement Learning, each used for different kinds of problems and data.
  • 🎯 Reinforcement Learning involves an agent learning to achieve a goal through trial and error, maximizing rewards, and balancing exploration and exploitation.
  • 🔧 Deep Learning works based on artificial neural networks, with layers including an input layer, multiple hidden layers for computation, and an output layer.
  • 🔗 Bayesian Networks are statistical models that represent variables and their conditional dependencies, useful for predicting the likelihood of different causes for an event.
  • 🤖 The Turing Test is a method to determine a machine's ability to exhibit intelligent behavior that is indistinguishable from a human's.
  • 🔧 Hyperparameter optimization in deep neural networks is vital for model efficiency and can be done through methods like Grid Search, Random Search, and Bayesian Optimization.

Q & A

  • What are the three levels of AI interview questions discussed in the video?

    -The three levels of AI interview questions discussed are basic level, intermediate level, and scenario-based questions.

  • Why is artificial intelligence necessary for business growth?

    -Artificial intelligence is necessary for business growth because it helps structure and analyze the immeasurable amount of data generated post-technical revolution, which is key to drawing useful insights and solving complex problems for business expansion.

  • How does AI differ from machine learning and deep learning?

    -AI represents simulated intelligence in machines, machine learning is the practice of enabling machines to make decisions without explicit programming, using data, and deep learning is a process that uses artificial neural networks to solve complex problems, mimicking the human brain.

  • What is the primary aim of machine learning?

    -The primary aim of machine learning is to allow machines to learn and improve from experience by providing them with a lot of data, enabling them to solve complex problems and find solutions.

  • What is an example of AI used in daily life?

    -An example of AI used in daily life is the Google search engine, which provides recommendations and relevant search results using machine learning algorithms and deep neural networks.

  • What are the different types of AI?

    -Different types of AI include reactive machines AI, limited memory AI, theory of mind AI, self-aware AI, artificial narrow intelligence, and artificial general intelligence. Some of these, like theory of mind AI and self-aware AI, are theoretical and not yet implemented in the real world.

  • How is machine learning related to artificial intelligence?

    -Machine learning is a subset of artificial intelligence. AI uses machine learning algorithms and concepts to solve problems, as machine learning provides the techniques to allow machines to learn from data and make decisions.

  • What are the three types of machine learning?

    -The three types of machine learning are supervised learning, unsupervised learning, and reinforcement learning.

  • What is the concept behind deep learning?

    -Deep learning is inspired by the neural networks in the human brain. It uses artificial neural networks to solve complex problems by processing information through layers of neurons, including an input layer, multiple hidden layers, and an output layer.

  • What is the Turing test and why is it significant?

    -The Turing test is a test proposed by Alan Turing to determine whether a computer is capable of thinking like a human. If a machine passes the Turing test, it is considered to have artificial intelligence, as it can make decisions and interpret data independently.

  • How does reinforcement learning work in the context of a game like Counter Strike?

    -In reinforcement learning, an agent explores an environment and takes actions to maximize rewards. In the context of a game like Counter Strike, the agent (player) performs actions to achieve objectives and receives rewards (points, weapons) for successful actions, leading to a progression in the game states.

Outlines

00:00

📖 Introduction to Artificial Intelligence Interview Questions

Lake Hoff introduces a session on common AI interview questions, categorizing them into basic, intermediate, and scenario-based levels. The necessity of AI is emphasized due to the exponential data generation from the technological revolution, requiring structured analysis for business growth, leveraging AI, machine learning, deep learning, and data science.

05:01

🔍 Exploring Basic Concepts and Types of AI

Lake Hoff clarifies the confusion among AI, machine learning, and deep learning, tracing their evolution and defining their distinct roles. AI simulates human intelligence, machine learning enables machines to make decisions with data without explicit programming, and deep learning uses neural networks to solve complex problems. Different AI types, including reactive, limited memory, theory of mind, and self-aware AI, are discussed, highlighting their theoretical and practical aspects.

10:01

🤖 Overview of AI Domains and Machine Learning

The discussion transitions into various domains within AI such as machine learning, neural networks, robotics, and expert systems, illustrating their unique approaches to problem-solving. Additionally, Lake tackles common misconceptions about the relationship between AI and machine learning, explaining the hierarchy of learning types: supervised, unsupervised, and reinforcement learning.

15:01

🧠 Deep Learning and Neural Networks Explained

Lake provides an in-depth look at deep learning and its core component, neural networks. He explains the structure of neural networks, including input, hidden, and output layers, and how they mimic the human brain to solve advanced problems. Key concepts of perceptrons, artificial neurons, and commonly used neural networks like feed-forward and convolutional neural networks are detailed.

20:01

🌐 Practical Applications of Advanced Neural Networks

This section covers recurrent neural networks, autoencoders, and Bayesian networks, explaining their functionality and practical applications, especially in signal and image processing. The focus then shifts to assessing machine intelligence through tests like the Turing Test, and discussing the theoretical aspects of more advanced AI, including types of intelligence and their potential for realization.

25:04

🏗️ Intermediate AI Concepts: Reinforcement Learning

Lake delves into the intermediate level AI topics, starting with reinforcement learning (RL). He uses analogies and examples, such as being stranded on an island, to explain how RL works through interaction with the environment, learning from actions and rewards. The section includes explanations of key concepts in RL like the policy, reward maximization, and the exploration-exploitation trade-off.

30:05

🛠️ Advanced Techniques in Machine Learning

Continuing with intermediate AI topics, Lake explains Markov decision processes and reward maximization strategies in reinforcement learning, including techniques like alpha-beta pruning to optimize minimax strategies in games. The discussion includes practical applications of these strategies in game theory and real-world scenarios.

35:07

🔬 Using AI in Practical Scenarios: From Gaming to Business

Lake outlines how AI is utilized in real-world scenarios, such as Facebook's face verification and targeted marketing. He explains the technologies behind these applications, including the algorithms and machine learning models involved, and discusses their implications for privacy and user interaction.

40:09

🌟 Advanced AI Interview Questions: Scenario-Based Challenges

The final segment offers an in-depth look at scenario-based interview questions, which test an applicant's understanding of complex AI concepts and their ability to apply these in practical situations. Examples include optimizing game strategies using AI, and leveraging machine learning for market analysis and fraud detection.

45:10

📚 Conclusion and Further Learning in AI

The video concludes with Lake encouraging viewers to engage with the content by asking questions and exploring further learning opportunities in AI. He emphasizes the importance of continuous learning and staying updated with the latest developments in AI technology.

Mindmap

Keywords

💡Artificial Intelligence (AI)

Artificial Intelligence, often abbreviated as AI, refers to the simulation of human intelligence in machines that are programmed to think like humans and mimic their actions. In the context of the video, AI is the foundational concept that enables machines to perform tasks that typically require human intelligence, such as learning and problem-solving. It is used to discuss the evolution and application of AI in various domains like data science, machine learning, and deep learning.

💡Machine Learning

Machine Learning is both a subset of AI and a technique that allows machines to learn from data and make decisions without being explicitly programmed. The video explains that machine learning is crucial for AI as it provides the mechanism for machines to improve their performance over time through experience. It is the basis for many applications, including Google's search engine recommendations.

💡Deep Learning

Deep Learning is a subset of machine learning that involves the use of artificial neural networks to solve complex problems. It is inspired by the human brain's neural networks and is particularly effective for tasks like image and speech recognition. The video discusses deep learning as a more advanced field within AI that aims to create artificial 'brains' capable of advanced pattern recognition and decision-making.

💡Data Science

Data Science is the broader field that encompasses AI, focusing on extracting useful insights from structured or unstructured data. The video establishes data science as a process that involves using various techniques, including AI, to derive actionable insights from data, which is essential for business growth and decision-making.

💡Reinforcement Learning

Reinforcement Learning is a type of machine learning where an agent learns to make decisions by taking actions in an environment to maximize some notion of cumulative reward. The video uses the example of a game like Counter Strike to illustrate how reinforcement learning works, where the agent (player) learns to navigate the game environment and achieve goals through a series of actions and rewards.

💡Neural Networks

Neural Networks are computing systems inspired by the human brain's neural networks. They are a core component of deep learning and are used to model complex patterns in data. The video explains that neural networks consist of layers of interconnected nodes, and they are designed to recognize patterns and solve problems by learning from data.

💡Q Learning

Q Learning is a specific type of reinforcement learning algorithm that seeks to learn a policy, which tells an agent the best action to take under given circumstances. The video describes Q Learning as a method where an agent interacts with its environment, learns from its experiences, and aims to find the optimal sequence of actions that lead to the most rewards.

💡Markov Decision Process

A Markov Decision Process (MDP) is a mathematical framework used to model decision-making in situations where outcomes are uncertain. The video explains MDP in the context of reinforcement learning, where it helps to find the optimal policy for an agent to maximize its rewards. An MDP involves states, actions, rewards, and transition probabilities.

💡Natural Language Processing (NLP)

Natural Language Processing is a field of AI that focuses on the interaction between computers and human languages. It includes techniques for understanding, interpreting, and generating human language. In the video, NLP is mentioned as a domain of AI that is used in applications like sentiment analysis on social media platforms.

💡Fuzzy Logic

Fuzzy Logic is a form of logic that deals with reasoning based on degrees of truth rather than strict true/false boolean logic. The video describes fuzzy logic systems as those that can handle uncertainty and imprecision by allowing for partial truth values, which is different from traditional binary systems.

💡Turing Test

The Turing Test is a measure of a machine's ability to exhibit intelligent behavior that is indistinguishable from that of a human. The video discusses the Turing Test as a benchmark for AI, where if a machine passes the test, it is considered to have demonstrated human-like intelligence.

Highlights

Introduction to different levels of AI interview questions, from basic to scenario-based.

Explanation of why AI is essential for analyzing immense data sets to grow businesses.

Clarification of the differences between AI, machine learning, deep learning, and data science.

Detailed discussion on the evolution of AI from the 1950s to the emergence of deep learning.

Introduction to the concepts of reactive machines and limited memory AI.

Insights into the development and applications of self-aware AI and artificial general intelligence.

Overview of neural networks and their role in deep learning.

Explanation of supervised, unsupervised, and reinforcement learning in machine learning.

Detailed explanation of Q-learning, a type of reinforcement learning algorithm.

Insight into how deep learning mimics the human brain's functioning.

Discussion of various types of artificial neural networks, including feedforward and recurrent networks.

Introduction to Bayesian networks and their application in disease and symptom analysis.

Exploration of the Turing Test and its significance in assessing AI's ability to mimic human thought.

Discussion on the use of AI in practical applications like Google's search engine and self-driving cars.

Detailed exploration of reinforcement learning, illustrated with practical examples and games.