Conjunctive learning

  • What is a conjunctive concept in English?

    A conjunction is a word that is used to connect words, phrases, and clauses.
    There are many conjunctions in the English language, but some common ones include and, or, but, because, for, if, and when..

  • What is a conjunctive concept in learning?

    a concept that is defined by a set of attributes, every member of which must be present for the concept to apply.
    For example, the concept brother requires the joint presence of the attributes (a) male and (b) sibling, neither of which may be omitted..

  • What is a conjunctive concept?

    a concept that is defined by a set of attributes, every member of which must be present for the concept to apply.
    For example, the concept brother requires the joint presence of the attributes (a) male and (b) sibling, neither of which may be omitted..

  • What is conjunctive rule in psychology?

    Answer: Conjunctive rule uses the logical relation AND to relate stimulus attributes, such as small and square. Attribute learning on the other hand refers to the process of discovering relevant attributes based on a known logical rule..

  • What is the conjunctive rule in psychology?

    Answer: Conjunctive rule uses the logical relation AND to relate stimulus attributes, such as small and square. Attribute learning on the other hand refers to the process of discovering relevant attributes based on a known logical rule..

  • An example of an experimental definition of a disjunctive concept is “a triangle, a blue figure, or both.” By this definition any triangle whether or not blue and any blue figure whether or not triangular would qualify for membership in the category; all other instances would be excluded.
  • Conjunctive concepts are defined as those where positive instances display all the values named by the con- cept.
    Positive instances of disjunctive concepts, on the other hand, need display only one of the values named by the concept.
by deciding which of the properties are relevant for the concept “chair,” and which of them have to be fulfilled or not to be fulfilled, respectively.
Here the learning algorithm asks if a hypothesis is contained in (i.e., equal to or more specific than) the target concept. We assume an oracle is available 
Humans are able to distinguish between different “things,” e.g., chair, table, sofa, book, newspaper, car, airplane, a.s.o. Also, there is no doubt that 

Are conjunctive hypotheses intractably large?

The target binary categorization function in principle could be any of the possible 22^n functions on n input bits.
Therefore, conjunctive hypotheses are a small subset of the space of possible functions, but both are intractably large.
All reasonable hypothesis spaces are intractably large or even infinite.

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How did Pennypacker learn conjunctive concepts?

Pennypacker, a masters student of Banerji at the Case Institute of Technology, implemented the recognition procedure and also used Bruner, Goodnow, and Austin’s Conservative Focussing Strategy to learn conjunctive concepts (Pennypacker, 1963 ).
Bruner, Goodnow, and Austin describe the strategy as follows:.

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How do you know if a concept is conjunctive?

Conjunctive descriptions are easily learned by finding all commonalities shared by all positive examples.
Must check consistency with negative examples.
If inconsistent, no conjunctive rule exists.
Concept may be disjunctive.
Neither of and is more general than the other.


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