Go to Post Wow, that is awfully impressive! How can a guy in the WWF be so smart? Oh, it's LIKE the WWF...:p - DonRotolo [more]
Home
Go Back   Chief Delphi > FIRST > General Forum
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rating: Thread Rating: 4 votes, 5.00 average. Display Modes
Prev Previous Post   Next Post Next
  #43   Spotlight this post!  
Unread 13-07-2015, 21:48
Oblarg Oblarg is offline
Registered User
AKA: Eli Barnett
FRC #0449 (The Blair Robot Project)
Team Role: Mentor
 
Join Date: Mar 2009
Rookie Year: 2008
Location: Philadelphia, PA
Posts: 1,116
Oblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond repute
Re: "standard error" of OPR values

Quote:
Originally Posted by wgardner View Post
Yes. In the paper in the other thread that I just posted about, the appendices show how much percentage reduction in the mean-squared residual is achieved by all of the different metrics (OPR, CCWM, WMPR, etc). An interesting thing to note is that the metrics are often much worse at predicting match results that they haven't included in their computation, indicating overfitting in many cases.
I don't think this necessarily indicates "overfitting" in the traditional sense of the word - you're always going to get an artificially-low estimate of your error when you test your model against the same data you used to tune it, whether your model is overfitting or not (the only way to avoid this is to partition your data into model and verification sets). This is "double dipping."

Rather, it would be overfitting if the predictive power of the model (when tested against data not used to tune it) did not increase with the amount of data available to tune the parameters. I highly doubt that is the case here.
__________________
"Mmmmm, chain grease and aluminum shavings..."
"The breakfast of champions!"

Member, FRC Team 449: 2007-2010
Drive Mechanics Lead, FRC Team 449: 2009-2010
Alumnus/Technical Mentor, FRC Team 449: 2010-Present
Lead Technical Mentor, FRC Team 4464: 2012-2015
Technical Mentor, FRC Team 5830: 2015-2016

Last edited by Oblarg : 13-07-2015 at 22:01.
Reply With Quote
 


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 05:13.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi