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Semantic Nets [1]

Example 1 Represent the following sentences using a semantic net: (a) Tom is a cat. (b) Tom caught a bird. (c) Tom is owned by John. (d) Tom is ginger in colour. (e) Cats like cream. (f) The cat sat on the mat. (g) A cat is a mammal. (h) A bird is an animal.

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Semantic Nets [1]

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  1. Example 1 Represent the following sentences using a semantic net: (a) Tom is a cat. (b) Tom caught a bird. (c) Tom is owned by John. (d) Tom is ginger in colour. (e) Cats like cream. (f) The cat sat on the mat. (g) A cat is a mammal. (h) A bird is an animal. (i) All mammals are animals. (j) Mammals have fur. Semantic Nets [1]

  2. What would you do with these two frames to reduce the replication of information? cow bull isa: cattle isa: cattle legs: 4 legs: 4 digestion: ruminant digestion: ruminant sex: female sex: male Exercise

  3. What is the most specific common generalization of these frames? calf lamb child isa: cattle isa: sheep isa: human age: young age: young age: young What rule for forming generalizations did you use? How would you change it so that it found this as the m.s.c.g.? X87 isa: mammal age: young Exercise

  4. Arrange these in an ISA hierarchy church, church of England, catholic church, orthodox church Invent frames to describe these: clergyman, bishop, parish priest, bishop of London, orthodox bishop Arrange those frames in an ISA hierarchy. Justify your arrangement. Exercise (cont.)

  5. [1] The staff on semantic nets is based on: [M. Huntbach, 1996] References

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