- #1
chisqaw
- 2
- 0
Hi ll, I have been asked to review a new image retrieval technique that has improved the retrieval performance compared with the old technique, ie, the hypothesis is that retrieval performance is influenced by retrieval techniques. The following table summarises the retrieval results. (They examined the first 300 retrieved images, 250 are relevant to the query for the new technique and 175 are relevant for the old technique)
Image relevant? Type of techniques Total
New technique Old technique
Yes 250 175 425
No 50 125 175
Total 300 300 600
I was using this distribution at http://davidmlane.com/hyperstat/chi_square_table.html but I am having trouble calculating the Chi Square value assuming the required p value is 0.01 and interpreting the result. Would someone be able to do this and explain how it was doing, or point to a decent tutorial? I only need this done, not to understand it, at least not past what is required.
Many thanks,
Lawrence
Image relevant? Type of techniques Total
New technique Old technique
Yes 250 175 425
No 50 125 175
Total 300 300 600
I was using this distribution at http://davidmlane.com/hyperstat/chi_square_table.html but I am having trouble calculating the Chi Square value assuming the required p value is 0.01 and interpreting the result. Would someone be able to do this and explain how it was doing, or point to a decent tutorial? I only need this done, not to understand it, at least not past what is required.
Many thanks,
Lawrence