LFD Book Forum meaning of union of hypothesis sets
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#1
04-26-2013, 12:33 PM
 Katie C. Member Join Date: Apr 2013 Posts: 17
meaning of union of hypothesis sets

I am trying to understand the union of hypothesis sets. Do we get hypotheses that were not in any of the original hypothesis sets? For example, if we take H1 to be the set of positive intervals on the real line, and H2 to be the set of 2 positive intervals (that we saw in HW3 Q6) on the real line, in the union do we have hypotheses with 3 positive intervals?
#2
04-26-2013, 12:42 PM
 yaser Caltech Join Date: Aug 2009 Location: Pasadena, California, USA Posts: 1,477
Re: meaning of union of hypothesis sets

Quote:
 Originally Posted by Katie C. I am trying to understand the union of hypothesis sets. Do we get hypotheses that were not in any of the original hypothesis sets? For example, if we take H1 to be the set of positive intervals on the real line, and H2 to be the set of 2 positive intervals (that we saw in HW3 Q6) on the real line, in the union do we have hypotheses with 3 positive intervals?
You get only hypotheses that were in one set or the other, but no added "combinations." It follows the formal definition of a union of sets (hypothesis sets or any other type of sets); the union being the set of all elements that appear in any of those sets (and nothing else).
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#3
04-26-2013, 02:48 PM
 binchen.bin@gmail.com Junior Member Join Date: Apr 2013 Posts: 7
Re: meaning of union of hypothesis sets

So by definition the union of hypothesis sets does not give rise to any new hypothesis, but the intersection of hypothesis sets may eliminate some hypothesis. Is that right?
#4
04-26-2013, 03:41 PM
 yaser Caltech Join Date: Aug 2009 Location: Pasadena, California, USA Posts: 1,477
Re: meaning of union of hypothesis sets

Quote:
 Originally Posted by binchen.bin@gmail.com So by definition the union of hypothesis sets does not give rise to any new hypothesis, but the intersection of hypothesis sets may eliminate some hypothesis. Is that right?
Correct.
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