[GitHub] incubator-madlib pull request: SVM: Add Gaussian kernel feature ma...

2016-01-14 Thread cwelton
Github user cwelton commented on a diff in the pull request: https://github.com/apache/incubator-madlib/pull/10#discussion_r49820902 --- Diff: methods/array_ops/src/pg_gp/array_ops.c --- @@ -824,6 +836,25 @@ array_fill(PG_FUNCTION_ARGS){ } /* + * This function ap

Re: How to contribute a spatial module to MADlib manipulating objects from PostGIS

2016-01-14 Thread Greg Chase
We always share the presentation and post the video replay as well. You can also drink lots of coffee, and join us if you are crazy enough. We like crazy people. This email encrypted by tiny buttons & fat thumbs, beta voice recognition, and autocorrect on my iPhone. > On Jan 14, 2016, at 6:35

[GitHub] incubator-madlib pull request: SVM: Add Gaussian kernel feature ma...

2016-01-14 Thread cwelton
Github user cwelton commented on a diff in the pull request: https://github.com/apache/incubator-madlib/pull/10#discussion_r49812120 --- Diff: methods/array_ops/src/pg_gp/array_ops.c --- @@ -824,6 +836,25 @@ array_fill(PG_FUNCTION_ARGS){ } /* + * This function ap

Re: Bayesian Analysis using MADlib (Gibbs Sampling for Probit Regression)

2016-01-14 Thread Caleb Welton
Great seeing the prototype work here, I'm sure that there is something that we can find from this work that we can bring into MADlib. However... It is a very different implementation from the existing algorithms, calling into the madlib matrix functions directly rather than having the majority of

[GitHub] incubator-madlib pull request: SVM: Add Gaussian kernel feature ma...

2016-01-14 Thread iyerr3
Github user iyerr3 commented on a diff in the pull request: https://github.com/apache/incubator-madlib/pull/10#discussion_r49807227 --- Diff: methods/array_ops/src/pg_gp/array_ops.c --- @@ -824,6 +836,25 @@ array_fill(PG_FUNCTION_ARGS){ } /* + * This function app

Re: New MADlib committer: Xiaocheng Tang

2016-01-14 Thread Ivan Novick
+1 and congrats On Fri, Jan 15, 2016 at 4:53 AM, Caleb Welton wrote: > Welcome Xiaocheng! Based on the contributions you've already made it's > clear you'll be a great addition to the community. Keep it up! > > It's great seeing the community growing. > > -Caleb > > On Wed, Jan 13, 2016 at 6:

[GitHub] incubator-madlib pull request: SVM: Add Gaussian kernel feature ma...

2016-01-14 Thread cwelton
Github user cwelton commented on the pull request: https://github.com/apache/incubator-madlib/pull/10#issuecomment-171812287 -1 from me as the code currently stands. Freeing memory passed to a function can lead to instability of the database system and is a complete blocker f

[GitHub] incubator-madlib pull request: SVM: Add Gaussian kernel feature ma...

2016-01-14 Thread cwelton
Github user cwelton commented on a diff in the pull request: https://github.com/apache/incubator-madlib/pull/10#discussion_r49795535 --- Diff: methods/array_ops/src/pg_gp/array_ops.c --- @@ -824,6 +836,25 @@ array_fill(PG_FUNCTION_ARGS){ } /* + * This function ap

Re: New MADlib committer: Xiaocheng Tang

2016-01-14 Thread Caleb Welton
Welcome Xiaocheng! Based on the contributions you've already made it's clear you'll be a great addition to the community. Keep it up! It's great seeing the community growing. -Caleb On Wed, Jan 13, 2016 at 6:38 PM, Roman Shaposhnik wrote: > Congrats Xiaocheng! Welcome to the club! > > Thank

Reminder! [VIRTUAL] MADlib Meeting: Bayesian Analysis of Binomial Response Models on MPP Databases (Greenplum & HAWQ) using MADlib Matrix Operations

2016-01-14 Thread Karen Vuong
Hi everyone, Just a reminder that the MADlib virtual community meeting is happening tomorrow at 9:45AM PST. Details are below. Thanks, Karen -- Forwarded message -- From: Karen Vuong Date: Thu, Jan 7, 2016 at 6:52 PM Subject: [VIRTUAL] MADlib Meeting: Bayesian Analysis of Binom

Re: How to contribute a spatial module to MADlib manipulating objects from PostGIS

2016-01-14 Thread Greg Chase
Hi Chenliang, Will we hear from you tomorrow at 10AM Pacific, or in a few weeks when the call is a better time for Asia-based callers? -Greg On Thu, Jan 14, 2016 at 8:18 AM, chenliang wang wrote: > Cool! I'd like to join the next discussion. > > Best, > Chenliang Wang > > > On 01/13/2016 06:36

Re: How to contribute a spatial module to MADlib manipulating objects from PostGIS

2016-01-14 Thread chenliang wang
Cool! I'd like to join the next discussion. Best, Chenliang Wang On 01/13/2016 06:36 PM, Greg Chase wrote: As I said, our next call is not China-friendly: http://mail-archives.apache.org/mod_mbox/incubator-madlib-dev/201601.mbox/%3CCAMg1VtnKB-WoyVqCstfMNCcJVOn2HKQQ6wNfqdovhgnB7zd5cw%40mail.gma

Re: FW: How to contribute a spatial module to MADlib manipulating objects from PostGIS

2016-01-14 Thread chenliang wang
Hello Ivan, Yes, GWR is a local form of OLR taking distance between locations into estimation. Actually, GWR and other spatial models are not widely applied to industry compared with classical statistical methods or ML models. A representative example would be automated valuation model**(AVM) f