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has-courseware |
169571 |
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url |
holdingsInfo?bibId=169571 |
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P1007 |
produced by R Penfound; contributor Yorick Wilks. |
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isAbout |
psychology |
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isAbout |
artificial intelligence |
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isAbout |
computers |
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isAbout |
perception |
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Contributor |
3613041ee53f30143adc8b4b288634e9 |
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Contributor |
17176d24e5c865444c03cc8821bd9f1b |
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Table Of Contents |
Yorick Wilks gives a lecture before an invited audience at the University of Essex.
He gives a demonstration of Eliza, a talking programme for a computer, which operates
by identifying key words in a sentence and responding to them. Yorick then explains
Eliza's limitations, the key point being that the programme does not take account
of general grammatical rules. He now looks at some ambiguities in language which humans
solve intuitively but which present major problems for computers. To better understand
this type of problem he examines and parses an example of ambiguity, the sentence,
'Put the green pyramid on the block in the box'. The parsing of the sentence reveals
two possible syntactic structures, which relate to different situations in the real
world. He now looks at a programme, SHRDLU, which can understand sentences about ?block
worlds?. He works through a flow chart included in the programme, which analyses noun
phrases, in order to show how SHRDLU would identify the phrase ?the green pyramid?.
In order to do this correctly the programme must utilise truth conditions, held in
the database. Yorick now describes some of SHRDLU?s advantages when operating within
its own limited block world. He compares it to Eliza and leaves us with the question,
'do humans cope with language problems in this analytical fashion??. |
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locator |
holdingsInfo?bibId=169571 |
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type |
Collection |
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label |
Conversing with computers |
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Description |
How do we talk to computers? Can they understand us if we do and will they reply?
These are the type of issues raised in this first programme about the language component
of artificial intelligence. The audience at Essex University, where the programme
was recorded, try talking to a simple computer program 'Eliza' which understands some
basic rules of conversation. However, problems such as word ambiguity can fool 'Eliza'
and so we then look at another program 'SHRDLU' which is conversationally more limited
but does try to get to grips with problems of syntax. |
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Publisher |
07f21de77e80d6bd38c3be6db6cb323d |
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Title |
Conversing with computers |