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-rw-r--r--regress_frequency_removal.m1
1 files changed, 1 insertions, 0 deletions
diff --git a/regress_frequency_removal.m b/regress_frequency_removal.m
index a60d93a..36fed96 100644
--- a/regress_frequency_removal.m
+++ b/regress_frequency_removal.m
@@ -12,4 +12,5 @@ function pred = regress_frequency_removal(price, quantity)
%pred = (pred .* (removed == 0)) + removed;
pred = pred + removed;
pred = real(ifft(pred));
+ pred = max(pred, 0);
endfunction