Artificial Intelligence Overview
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Questions and Answers

What are tasks that cannot easily be automated by machines?

Tasks that require human intelligence, creativity, or emotional understanding, such as art, music, writing, and complex decision-making.

How do computers abilities compare to that of humans?

Computers are better at tasks like calculations and data storage, while humans excel at creativity, problem-solving, and emotional intelligence.

Which of the following tasks can computers do better than humans?

  • Adding a thousand four-digit numbers
  • Drawing complex, 3D images
  • Storing and retrieving massive amounts of data
  • All of the above (correct)
  • What is an example of a task that is difficult for computers to perform?

    <p>Identifying a cat in a picture, or matching it to another photo of a cat.</p> Signup and view all the answers

    Which of these occupations could (or should) be performed by computers?

    <p>Librarian</p> Signup and view all the answers

    What is Artificial Intelligence (AI)?

    <p>The study of computer systems designed to mimic and apply human intelligence.</p> Signup and view all the answers

    What defines intelligence?

    <p>The ability to learn, understand, and apply knowledge to solve problems and adapt to new situations.</p> Signup and view all the answers

    The Turing Test is a test to determine if a computer can think like a human.

    <p>True</p> Signup and view all the answers

    What are the two types of equivalences in the Turing Test?

    <p>Weak Equivalence</p> Signup and view all the answers

    What is the Loebner prize?

    <p>The first formal instantiation of the Turing Test, held annually.</p> Signup and view all the answers

    What is a chatbot?

    <p>A program designed to engage in conversation with a human user.</p> Signup and view all the answers

    What is knowledge representation?

    <p>The methods used to store and organize information in a computer system.</p> Signup and view all the answers

    What is a semantic network?

    <p>A knowledge representation technique that focuses on relationships between objects.</p> Signup and view all the answers

    What is the definition of artificial intelligence (AI) as presented in the text?

    <p>The study of computer systems that attempt to model and apply the intelligence of the human mind.</p> Signup and view all the answers

    What did Alan Turing ask in his 1950 paper, "Computing Machinery and Intelligence"?

    <p>Can machines think?</p> Signup and view all the answers

    What is the purpose of the Turing Test?

    <p>To empirically determine whether a computer has achieved intelligence.</p> Signup and view all the answers

    Passing the Turing Test definitively proves that a machine is thinking.

    <p>False</p> Signup and view all the answers

    What are the three main aspects that are compared between computers and humans in the context of AI?

    <p>Reasoning</p> Signup and view all the answers

    What is a search tree?

    <p>A structure that represents alternatives in adversarial situations such as game playing.</p> Signup and view all the answers

    What is the goal of the simplified Nim game?

    <p>To place the last mark in the rightmost space.</p> Signup and view all the answers

    What is the purpose of pruning a search tree?

    <p>To reduce the size of the tree, making it easier and faster to analyze.</p> Signup and view all the answers

    What are the two main techniques for pruning search space?

    <p>Breadth-first</p> Signup and view all the answers

    What is an expert system?

    <p>A software system based on the knowledge of human experts.</p> Signup and view all the answers

    What are the two key components of a rule-based expert system?

    <p>Rule-based system and inference engine.</p> Signup and view all the answers

    What is an artificial neural network?

    <p>A computer representation of knowledge that attempts to mimic the neural networks of the human body.</p> Signup and view all the answers

    What is a neuron in the context of neural networks?

    <p>A single cell that conducts a chemically-based electronic signal.</p> Signup and view all the answers

    What is a synapse in a neural network?

    <p>The gap between an axon and a dendrite.</p> Signup and view all the answers

    What is the process of adjusting the weights and threshold values in a neural network called?

    <p>Training.</p> Signup and view all the answers

    What are the three basic types of processing during human/computer voice interaction?

    <p>Natural Language Comprehension</p> Signup and view all the answers

    What is dynamic voice generation?

    <p>A computer examines the letters that make up a word and produces the sequence of sounds that correspond to those letters in an attempt to vocalize the word.</p> Signup and view all the answers

    What are phonemes?

    <p>The sound units into which human speech has been categorized.</p> Signup and view all the answers

    What is a voiceprint?

    <p>The plot of frequency changes over time representing the sound of human speech.</p> Signup and view all the answers

    What are the three types of ambiguity in natural language?

    <p>Syntactic</p> Signup and view all the answers

    What is mobile robotics?

    <p>The study of robots that move relative to their environment, while exhibiting a degree of autonomy.</p> Signup and view all the answers

    What is the sense-plan-act (SPA) paradigm?

    <p>The world of the robot is represented in a complex semantic net in which the sensors on the robot are used to capture the data to build up the net.</p> Signup and view all the answers

    What is the main idea behind subsumption architecture for robots?

    <p>Instead of trying to model the entire world, robots are given simple behaviors tailored for specific parts of the world.</p> Signup and view all the answers

    According to Asimov's laws of robotics, what is the first rule a robot must follow?

    <p>A robot may not injure a human being or, through inaction, allow a human being to come to harm.</p> Signup and view all the answers

    Study Notes

    Artificial Intelligence

    • Artificial intelligence (AI) is the study of computer systems that aim to mimic human intelligence.
    • AI involves writing programs to identify objects in images.
    • Key questions in AI include: are there tasks that cannot be automated, and how do computers compare to humans in abilities?
    • The speed of neurotransmitters (roughly 1000 ft/second) is contrasted with the light speed of electrons in computers.
    • Differences also exist in memory capacity: human brains have roughly 100 billion neurons and 50 trillion bits, while sophisticated computer models may only approach similar capacities.
    • The number of connections per neuron (roughly 1000) in the human brain is quite different from computer systems, which sometimes employ hundreds of parallel processors.

    Thinking Machines

    • Computers excel at tasks like adding thousands of four-digit numbers and creating complex 3D images.
    • Humans excel at tasks like identifying cats in pictures.
    • Computers have difficulty with complex reasoning and interpretation..

    Computers vs Humans

    • Computers can perform tasks better than humans, such as adding thousands of four-digit numbers and creating 3D images.
    • Humans can better perform tasks requiring complex reasoning or interpretation, such as identifying a cat.

    What is AI?

    • AI is the study of computer systems that attempt to mimic human intelligence.

    Turing Test

    • A Turing test determines if a computer has achieved human-level intelligence.
    • The interrogator in the test tries to determine which respondent is the computer and which is the human.

    Weak and Strong Equivalence

    • Weak equivalence refers to the case where two systems (human and computer) produce the same results, but they don't necessarily use the same processes.
    • Strong equivalence is when both systems use identical internal processes to yield comparable results.

    Loebner Prize

    • The Loebner Prize is an annual competition that tests computer programs on their ability to generate human-like conversation.

    Chatbots

    • Chatbots are programs designed to carry on conversations with human users.

    Knowledge Representation

    • Comparing human and computer work can offer insights into their respective strengths.
    • Processing models, knowledge representation, and reasoning are important aspects of AI.

    Semantic Networks

    • A semantic network is a knowledge representation technique that focuses on the relationships between objects.
    • These networks use directed graphs.
    • Semantic networks represent real-world objects and their relationships, guiding inquiries.

    Search Trees

    • Search trees represent possible alternative solutions for situations, such as game playing.
    • Paths on the tree depict a series of decisions made by players in a game.
    • Nim (a simplified game) is an illustrative, simplified example.

    Search Tree Strategies for Pruning

    • Depth-first search explores selected paths all the way down the tree.
    • Breadth-first search analyzes all possible paths but only for a short distance down the tree.

    Expert Systems

    • Expert systems are software designed to use knowledge of experts to solve problems.
    • They typically rely on if-then rules and an inference engine to draw conclusions.
    • An expert system is a specific kind of knowledge-based system built upon rules.

    Gardner Expert System Example

    • An example of an expert system application is a system that decides on a lawn treatment strategy using specific named abbreviations.

    Data for Expert Systems

    • Data like lawn condition (such as "bare", "sparse", "weedy" and "buggy"), date of last treatment, and current date/season are helpful inputs for expert systems.

    Rules of Expert Systems

    • If-then statements provide rules within expert systems.

    Artificial Neural Network

    • A representation of knowledge that tries to mirror human neural networks, mimicking the human body's processes
    • Individual nodes (neurons) accept multiple input values (dendrites) and produce a single output of zero or one (axon).
    • Each value input has an associated numerical weight (synapse).

    Neural Network

    • A series of neurons connected to one another.
    • Excited neurons create a strong pathway.
    • A biological neuron features multiple input tentacles (dendrites) and one primary output tentacle (axon).
    • The gap between the axon and dendrite is called the synapse.
    • Neural networks have a constant state of flux learning involves creating new strong pathways.
    • Training involves adjusting weights and thresholds in a neural network.

    Natural Language Processing

    • Natural language processing (NLP) focuses on various types of human/computer voice interactions, such as voice recognition, understanding human language, and speech synthesis.
    • NLP faces challenges related to ambiguity in natural language.

    Voice Synthesis

    • A method to convert words into spoken form using sounds.
    • Phonemes are the fundamental units of speech.
    • Two approaches to voice synthesis exist: dynamic voice generation, and recorded speech

    Problems with Voice Recognition

    • Identifying speech is difficult because it varies between speaker and speaker, due to factors like mouth shape, tongue position, tone, and voice volume/regional accents.
    • Speakers may use different contexts, causing ambiguity, as the same word might be said in different contexts, with different tones/expressions/etc.
    • Humans use continuous speech; voice recognition systems often need multiple recordings of the same word in different contexts due to this.

    Voiceprints

    • It's a plot of frequency changes over time in human speech, used for speaker identification and security.
    • Training is needed to generate an average voiceprint for a word.

    Natural Language Comprehension

    • Natural language is often ambiguous:
      • Lexical Ambiguity: Words having multiple meanings and usages.
      • Syntactic Ambiguity: Sentences being constructed in various ways, resulting in distinct interpretations.
      • Referential Ambiguity: Pronouns having multiple references to different nouns within the context of a statement.

    Robotics

    • Mobile robotics studies robots moving in their environments independently.
      • Sense-plan-act (SPA) paradigm represents the robot's world using a complex semantic network, with sensors capturing data for building the network.
      • Subsumption Architecture is a simplified approach to robot modeling; rather than modelling the whole world, the process is made simpler by using multiple layers of behaviors, each connected to a specific part of the world that is needed .
    • Asimov's laws of robotics (a set of basic rules)
    • Robot examples include the Sony Aibo, the Sojourner Rover, and Spirit/Opportunity Rovers

    Other Topics/Examples

    • Examples of robots include Sony's Aibo, the Sojourner Rover, and Spirit/Opportunity Rovers.

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    Description

    This quiz explores the fundamental concepts of artificial intelligence, including its definition, comparisons between computer and human abilities, and key components like the Turing test. Discover how AI attempts to replicate human intelligence and the tasks that are best suited for either computers or humans.

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