How to restore tensor after applied the PARAFAC model?

3 ビュー (過去 30 日間)
PaulLe
PaulLe 2020 年 4 月 23 日
コメント済み: PaulLe 2020 年 4 月 24 日
Hi everyone,
Suppose I have a tensor have the size of (128 x 128 x 3). When I apply the PARAFAC model (to fit one-component) to decomposition tensor. I get many components a1, b1, c1
My question here:
+/ a1 have size of (128 x 1)
+/ b1 have size of (128 x 1)
+/ c1 have size of (3 x 1).
How to get the result of multiplication a1.b1.c1? (restore original tensor?). Because each factor is not the same size?
Thank you for your help.

採用された回答

Christine Tobler
Christine Tobler 2020 年 4 月 23 日
The three component vectors represent the 3 different dimensions here. For the one-component case (all are vectors), you can use
a1 .* (b1.') .* (reshape(c1, 1, 1, []))
which will return an array of size length(a1) x length(b1) x length(c1).
  1 件のコメント
PaulLe
PaulLe 2020 年 4 月 24 日
Dear Tobler,
Thank you for your help.

サインインしてコメントする。

その他の回答 (0 件)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by