Singular Value Decomposition.

Singular Value Decomposition. - Messages

#1 Posted: 6/22/2020 2:14:35 AM
Alvaro Diaz Falconi

Alvaro Diaz Falconi

1,054 likes in 1,719 posts.

Group: User

Hi. Very short code. Singular Value Decomposition using QR decomposition.

svd.sm (59.92 KiB) downloaded 442 time(s).
svd.pdf (142.85 KiB) downloaded 344 time(s).

Best regards.
Alvaro.
2 users liked this post
frapuano 6/22/2020 4:16:00 AM, sergio 6/22/2020 5:00:00 AM
#2 Posted: 6/25/2020 1:26:33 AM
Alvaro Diaz Falconi

Alvaro Diaz Falconi

1,054 likes in 1,719 posts.

Group: User

Singular Value Decomposition based on Numerical Recipes book. Faster and robust.

svd_nr.pdf (122.43 KiB) downloaded 314 time(s).
svd_nr.sm (95.26 KiB) downloaded 403 time(s).

Best regards.
Alvaro.

1 users liked this post
frapuano 6/25/2020 1:37:00 AM
#3 Posted: 6/25/2020 10:44:47 AM
Jean Giraud

Jean Giraud

983 likes in 6,866 posts.

Group: User

Wrote

Singular Value Decomposition based on Numerical Recipes book. Faster and robust.


Thanks Alvaro ... OK all red SS 6179
I have no applications for the rectangular matrix.
Ultimately, all that stuff aims at solving singular square matrix,
2 examples Chemical Balance all done well.
Smath SVD can be used as well to sanity Greville.
Both documents take no time calculation.

Maths Pseudo Greville.sm (87.79 KiB) downloaded 422 time(s).
Maths SVD.sm (228.82 KiB) downloaded 428 time(s).

1 users liked this post
Alvaro Diaz Falconi 6/25/2020 11:01:00 PM
#4 Posted: 6/26/2020 11:11:10 AM
Jean Giraud

Jean Giraud

983 likes in 6,866 posts.

Group: User

Wrote

Singular Value Decomposition based on Numerical Recipes book. Faster and robust.


Complete sanity vs Smath built-in SVD ... hyper fast.
Thanks Alvaro for sharing your great programming skill.

Maths svd.nr.sm (94.98 KiB) downloaded 445 time(s).
#5 Posted: 7/11/2020 12:16:47 AM
Alvaro Diaz Falconi

Alvaro Diaz Falconi

1,054 likes in 1,719 posts.

Group: User

Pseudo inverse, but not based in the previous SVD.

pinv.sm (91.35 KiB) downloaded 394 time(s).
pinv.pdf (168.98 KiB) downloaded 274 time(s).

Best regards.
Alvaro.



1 users liked this post
frapuano 7/11/2020 5:45:00 AM
#6 Posted: 7/11/2020 12:52:03 AM
Alvaro Diaz Falconi

Alvaro Diaz Falconi

1,054 likes in 1,719 posts.

Group: User

Pseudo inverse, based in the previous (improved) SVD.

pinv_svd.sm (161.03 KiB) downloaded 409 time(s).
pinv_svd.pdf (153.64 KiB) downloaded 319 time(s).

Best regards.
Alvaro.
1 users liked this post
frapuano 7/11/2020 5:45:00 AM
  • New Posts
  • No New Posts