Commonsense Knowledge Base

Commonsense Knowledge Base

In artificial intelligence research, commonsense knowledge is the collection of facts and information that an ordinary person is expected to know. The commonsense knowledge problem is the ongoing project in the field of knowledge representation (a sub-field of artificial intelligence) to create a commonsense knowledge base: a database containing all the general knowledge that most people possess, represented in a way that it is available to artificial intelligence programs that use natural language or make inferences about the ordinary world. Such a database is a type of ontology of which the most general are called upper ontologies.

The problem is considered to be among the hardest in all of AI research because the breadth and detail of commonsense knowledge is enormous. Any task that requires commonsense knowledge is considered AI-complete: to be done as well as a human being does it, it requires the machine to appear as intelligent as a human being. These tasks include machine translation, object recognition, text mining and many others. To do these tasks perfectly, the machine simply has to know what the text is talking about or what objects it may be looking at, and this is impossible in general unless the machine is familiar with all the same concepts that an ordinary person is familiar with.

Information in a commonsense knowledge base may include, but is not limited to, the following:

  • An ontology of classes and individuals
  • Parts and materials of objects
  • Properties of objects (such as color and size)
  • Functions and uses of objects
  • Locations of objects and layouts of locations
  • Locations of actions and events
  • Durations of actions and events
  • Preconditions of actions and events
  • Effects (postconditions) of actions and events
  • Subjects and objects of actions
  • Behaviors of devices
  • Stereotypical situations or scripts
  • Human goals and needs
  • Emotions
  • Plans and strategies
  • Story themes
  • Contexts

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Famous quotes containing the words base and/or knowledge:

    Your top has sunk too low,
    Your base has spread too wide,
    For you to roll one stone
    Down if you tried.
    Robert Frost (1874–1963)

    But a mother is like a broomstick or like the sun in the heavens, it does not matter which as far as one’s knowledge of her is concerned: the broomstick is there and the sun is there; and whether the child is beaten by it or warmed and enlightened by it, it accepts it as a fact in nature, and does not conceive it as having had youth, passions, and weaknesses, or as still growing, yearning, suffering, and learning.
    George Bernard Shaw (1856–1950)