precision and recall
Post on 11-Feb-2017
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Relevant Found
5 141
Precision: |𝑹∩𝑭|
|𝑭|
4246
=𝟒𝟏
𝟒𝟐= 0,98 = 98%
„How many % of the found items are relevant?“
Improve Precision
• Find less rubbish (=> Relevance Feedback)
Precision: |𝑹∩𝑭|
|𝑭|
Hariboogle
Search
Color-Rado
42 Results in 0,002 Seconds
Improve Precision
• Find less rubbish (=> Relevance Feedback)
Precision: |𝑹∩𝑭|
|𝑭|
Hariboogle
Search
Color-Rado
42 Results in 0,002 Seconds
Relevant Found
5 141
Recall: |𝑹∩𝑭|
|𝑹|
4246
=𝟒𝟏
𝟒𝟔= 0,89 = 89%
„How much % of the relevant items were found?“
Recall: |𝑹∩𝑭|
|𝑹|= 1 Perfect!
All relevant items were found
A lot of rubbish
803214523509235*1012 Billion results
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