Fix wrong axis in conv-layer finite-difference formulas#2716
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Chessing234 wants to merge 1 commit into
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Fix wrong axis in conv-layer finite-difference formulas#2716Chessing234 wants to merge 1 commit into
Chessing234 wants to merge 1 commit into
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The [1, -1] kernel is 1×2 and runs along columns, so the difference is horizontal (j), not vertical (i). Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
[1, -1]edge kernel is 1×2 and applied along the width axis, so at(i, j)it computesX[i,j] - X[i,j+1].x_{i,j} - x_{(i+1),j}and\partial_i).Root cause
Row index
iand column indexjwere swapped in the symbolic expressions.Why this fix is correct
The code block right below (
K = [[1.0, -1.0]]) already implements a horizontal difference; only the math notation was wrong.Fixes #2669
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