Hello.
On Thu, 9 Nov 2017 10:15:11 +0530, Shubham Jindal wrote:
Hello,
Thanks for the update Gilles. How should I proceed with the patch
request?
Shall I go ahead and create a feature request on JIRA and then have a
patch
request tied to that feature?
Yes, that is fine.
However, to minimize rounds of updates, be sure to
* check out the git "master" branch,
* create a "feature branch" (see file in "doc/development"),
* run "mvn site" in the project directory,
* ensure that all the reports (that will be located in the
"target/site" directory) are clean, and
* cover the provided code with unit tests.
Thanks for your interest in Commons Math.
Best regards,
Gilles
Please let me know the procedure to go ahead
with this
Thanks
Shubham Jindal
On Thu, Nov 9, 2017 at 5:44 AM, Gilles <[email protected]>
wrote:
Hi.
On Wed, 8 Nov 2017 21:20:19 +0530, Shubham Jindal wrote:
Hello,
I have written a full fledged efficient implementation of cKMeans
in Java
https://urldefense.proofpoint.com/v2/url?u=https-3A__cran.r-
2Dproject.org_web_packages_Ckmeans.1d.dp_index.html&d=DwICaQ
&c=3_5eq9zYXWRS8ywqccmjfTRKM8mRLoQp6HBg1Tdb_Pc&r=O38Sg7Ci5zX
0AvRwc1e-g-mbng-04QjfLbi_9z_-CTc&m=xukM8HSh3tlEGIT_QDHqyHxR
XotWOzZvFa7CPvzlInI&s=mjhfzhAKtcDskCCsKnVkHogxv7r31FKEaF8MpK9dnQo&e=
and
https://urldefense.proofpoint.com/v2/url?u=https-3A__journal
.r-2Dproject.org_archive_2011-2D2_RJournal-5F2011-2D2-
5FWang-2BSong.pdf&d=DwICaQ&c=3_5eq9zYXWRS8ywqccmjfTRKM8mRLo
Qp6HBg1Tdb_Pc&r=O38Sg7Ci5zX0AvRwc1e-g-mbng-04QjfLbi_9z_-CTc&
m=xukM8HSh3tlEGIT_QDHqyHxRXotWOzZvFa7CPvzlInI&s=Qlw5usWlEii6
4hiLiFEF9nBN94x7K0td6PgILBpum08&e=
The algorithm described here is *O(kn^2)* where *k*: number of
clusters
and
*n*: number of 1D points. But, there exists an efficient
implementation in
later versions of cKMeans which is *O(knlog(n))*
cKMeans is faster than kMeans and also deterministic in nature. Can
I
submit a patch request for cKMeans implementation in Apache Commons
Math3
ML Clustering
<https://urldefense.proofpoint.com/v2/url?u=https-3A__
commons.apache.org_proper_commons-2Dmath_javadocs_api-2D3.6_
org_apache_commons_math3_ml_clustering_package-2Dsummary.
html&d=DwICaQ&c=3_5eq9zYXWRS8ywqccmjfTRKM8mRLoQp6HBg1Tdb_Pc&
r=O38Sg7Ci5zX0AvRwc1e-g-mbng-04QjfLbi_9z_-CTc&m=xukM8HSh3tlE
GIT_QDHqyHxRXotWOzZvFa7CPvzlInI&s=i31GoF_7zNdr1h979W-oFpIu8K
zRvrpEt5L1bPfUrGU&e=>
package
as a contribution?
Thanks for your proposal and interest in contributing.
The current development branch (git "master") is towards
version 4.0 of the library:
https://urldefense.proofpoint.com/v2/url?u=http-3A__commons.
apache.org_proper_commons-2Dmath_source-2Drepository.html&d=
DwICaQ&c=3_5eq9zYXWRS8ywqccmjfTRKM8mRLoQp6HBg1Tdb_Pc&r=O38Sg
7Ci5zX0AvRwc1e-g-mbng-04QjfLbi_9z_-CTc&m=xukM8HSh3tlEGIT_QDH
qyHxRXotWOzZvFa7CPvzlInI&s=_0Vu9eCJBe8s_cNDKBBolT6vX09GA_V3_Qjd1uisM1o&e=
Also, you should be aware that Commons Math has had very few
contributors for the past year. A lot of work was done since
the last official release, but a lot is still needed in order
to be able to release the next one, due to the many open issues
and lack of human resources:
https://urldefense.proofpoint.com/v2/url?u=https-3A__issues.
apache.org_jira_browse_MATH&d=DwICaQ&c=3_5eq9zYXWRS8ywqccmjf
TRKM8mRLoQp6HBg1Tdb_Pc&r=O38Sg7Ci5zX0AvRwc1e-g-mbng-04QjfLbi
_9z_-CTc&m=xukM8HSh3tlEGIT_QDHqyHxRXotWOzZvFa7CPvzlInI&s=S1G
4GacI0e5qXM4w5yYLeqJFuL0Lg9JaDC-JLYv9hhg&e=
It has been proposed to break the library into more manageable
standalone components (the contents of the "o.a.c.math4.ml"
package was among the likely candidates) but there was no
agreement within the Commons project management committee on
this attempt to revive development.[1]
Best regards,
Gilles
[1] Full story is in the "dev" ML archives:
https://urldefense.proofpoint.com/v2/url?u=http-
3A__markmail.org_list_org.apache.commons.dev_&d=DwICaQ&
c=3_5eq9zYXWRS8ywqccmjfTRKM8mRLoQp6HBg1Tdb_Pc&r=O38Sg7Ci5zX0
AvRwc1e-g-mbng-04QjfLbi_9z_-CTc&m=xukM8HSh3tlEGIT_QDHqyHxR
XotWOzZvFa7CPvzlInI&s=iJmDCZVfCOlxHCXIv8cIQjTw_TxMKgVuWYsguMk_xuk&e=
Thanks
Shubham Jindal
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