Context Navigation

#2660 closed enhancement (done)

Extend VariableNetworkInstances to include problems with no noise and to calculate actual variable relevance

Reported by:	bburlacu	Owned by:	gkronber
Priority:	medium	Milestone:	HeuristicLab 3.3.15
Component:	Problems.Instances	Version:	3.3.14
Keywords:		Cc:

Description

It should also be possible to use VariableNetwork problem instances with zero noise. Additionally, the problem descriptions could be improved such that variable descriptions are ordered alphabetically.

Change History (18)

comment:1 Changed 8 years ago by bburlacu

Owner set to bburlacu
Status changed from new to accepted

r14260: Include instances with no noise. Improve formatting of problem description.

comment:2 Changed 8 years ago by bburlacu

Owner changed from bburlacu to gkronber
Status changed from accepted to reviewing

comment:3 Changed 8 years ago by gkronber

r14271: slightly refactored VariableNetwork instance and added calculation of variable relevance

comment:4 Changed 8 years ago by gkronber

Status changed from reviewing to assigned
Summary changed from Extend VariableNetworkInstances to include problems with no noise to Extend VariableNetworkInstances to include problems with no noise and to calculate actual variable relevance

comment:5 Changed 8 years ago by gkronber

The variable relevance measure introduced with r14271 does not completely match our definition of variable relevance. The variable relevance calculation should therefore be adapted.

comment:6 Changed 8 years ago by gkronber

r14291: changed calculation of variable relevance values for variable interaction networks based on sampling Gaussian processes.

Instead of taking inverse length scale (ARD). We calculate the deviation from the original function (y) after individual variables are removed (y').

comment:7 Changed 8 years ago by gkronber

Owner changed from gkronber to bburlacu
Status changed from assigned to reviewing

comment:8 follow-up: ↓ 10 Changed 8 years ago by gkronber

Owner changed from bburlacu to gkronber
Status changed from reviewing to assigned

The current variable relevance calculation does not consider relevances of indirectly dependent variables.

comment:9 Changed 7 years ago by gkronber

Status changed from assigned to accepted

comment:10 in reply to: ↑ 8 Changed 7 years ago by gkronber

Replying to gkronber:

The current variable relevance calculation does not consider relevances of indirectly dependent variables.

This is in fact the correct approach.

When we sample data form the network we also observe statistical dependencies to other - indirectly related - variables. However, these indirect dependencies should not be considered as actual dependencies within the network (indirectly connected variables are conditionally independent).

Last edited 7 years ago by gkronber (previous) (diff)