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I getting problem in understanding the sentence

Alpha indicates the IoU (Intersection over Union) for neighbouring candidate boxes; step sizes of the sliding windows are determined such that one step results in an IoU of Alpha.

What I understand is: The value of Alpha (which is step size) is actually the IoU (Intersection over Union) for neighbouring candidate boxes ;(further explanation of this previous sentence.) step sizes of the sliding windows can be calculated as one step produce in an IoU of Alpha.

I couldn't understand the meaning of "in an IoU of Alpha." Anyone please help me to explain this in simple words or with example

Complete Context Need help in understanding the question

Aadnan Farooq A
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  • It seems that the authors talk about a sequence $B_1,B_2, B_3,\ldots$ of boxes that they want to produce by some algorithm. They intend to adjust the details and parameters of said algorithm is such a way as to guarantee $\operatorname{IoU}(B_n,B_{n+1})=\alpha$. – Hagen von Eitzen Jan 08 '17 at 10:15
  • let me explain in step wise, please correct me if I miss understood anything. From some algorithm we have candidate bounding boxes. Then we search the bounding boxes using sliding window search. Then the step size is determined using a single parameter α. So does it means α is a step size? – Aadnan Farooq A Jan 08 '17 at 10:54

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