Opened 3 weeks ago
Last modified 37 hours ago
#3014 reviewing enhancement
Extend physics problems to allow testing with simulated noise
Reported by: | gkronber | Owned by: | mkommend |
---|---|---|---|
Priority: | medium | Milestone: | HeuristicLab 3.3.16 |
Component: | Problems.Instances | Version: | trunk |
Keywords: | Cc: |
Description
The physics problem instances for symbolic regression have been introduced with #2957.
It could be helpful to have versions with a small amount of noise.
Attachments (1)
Change History (9)
comment:1 Changed 3 weeks ago by gkronber
- Status changed from new to accepted
- Version set to trunk
comment:2 Changed 3 weeks ago by gkronber
r17093: added a copy of the target variable with simulated noise to the AircraftMaximumLift problem instance
comment:3 Changed 3 weeks ago by gkronber
- Status changed from accepted to reviewing
comment:4 Changed 3 weeks ago by gkronber
r17094: fixed bugs in AircraftLift problem description
comment:5 Changed 7 days ago by gkronber
- Owner changed from gkronber to mkommend
comment:6 follow-up: ↓ 7 Changed 3 days ago by mkommend
- Owner changed from mkommend to gkronber
- Status changed from reviewing to assigned
Reviewed r17092, r17093, r17094.
Changes regarding the noisy target column look good. However, in r17092 the formula for the AircraftLift problem and in r17094 the according description has been changed from alpha - alpha_0 to alpha + alpha_0. In the publication [0] the formula is stated with a minus as it has been originally implemented. Could you please check again which formulation is correct.
comment:7 in reply to: ↑ 6 Changed 37 hours ago by gkronber
Replying to mkommend:
[...] However, in r17092 the formula for the AircraftLift problem and in r17094 the according description has been changed from alpha - alpha_0 to alpha + alpha_0. In the publication [0] the formula is stated with a minus as it has been originally implemented. Could you please check again which formulation is correct.
Thanks for the critical review. I rechecked the formula in J. Anderson "Fundamentals of Aerodynamics" 5th edition. The zero-lift angle of attack is typically in the range of -2° and -1° and is the angle where the lift of the airfoil is zero. Indeed I introduced an error in r17094. Fixed the formula in r17150.
Changed 37 hours ago by gkronber
comment:8 Changed 37 hours ago by gkronber
- Owner changed from gkronber to mkommend
- Status changed from assigned to reviewing
r17092: changed description of variables and added a copy of the target variable with simulated noise for AircraftLift, FluidDynamics and RocketFuelFlow