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+--- Thread: Two questions. (/showthread.php?tid=340)
Two questions. - Jisu Song - 07-22-2015
Hello,
1.
I really tried to get .csv file to do Sensitivity Analysis.
I attached my files(epw, csv, rvi file)
Unchanged IDF file is D_BEFORE(8.1) and Modified in jEPlus tool is S-P1.jep, D_BEFORE(8.1)-P1
How can I get an csv file?
I checked LHS(Latin Hypercube sampling)
A random sampling 100 jobs
Search tag is @@Area per person@@ , range is 15~25 interval 0.1 as you see in my jep file.
I wonder what's wrong with my sampling.
2.
I want to check probability density function (gaussian, triangular, uniform)
Actually, I don't know what that is correctly. Can you explain and how can I check it?
I saved my file as PDF.jep
@sample(gaussian,0,1,100)
I curios that gaussian distribution must be " mean=0. standard deviation =1 " Isn't it??
I think I also need csv file but I couldn't get it.
Thank you soooo much!!!
RE: Two questions. - navid - 07-23-2015
Hi dear Jisu Song,
What do you want to do exactly??
There are lots of sensitivity analysis methods to choose,especially in building performance analysis.Which one are you going to use?
Second,please tell me what you did in your sensitivity analysis work so far step by step.In your explanations, there are a lot of ambiguities. And at the end is that you have not sent the parameters and the range of their variations in your file.You can email me directly too.
Navid Delgarm
RE: Two questions. - Jisu Song - 07-27-2015
[Sensitivity Analysis]
What I want to know is EnergyConsumption(csv file) regarding to input files (this case Zone Floor Area per Person {m2/person} )
After I get this result file (EnergyConsumption/ input parameters), I'll calculate IC !!
jEPlus process
1. Make a range of parameters
2. jEPlus(v1.5.2) Running
Project tab * 1) 3 input files (daejeon.epw / D_BEFORE(8.1).idf / HVAC.rvi )
Project tab * 2) Search tag (@@Area per person@@)
Project tab * 3) Values [15 : 0.1: 25] , Value type : Double
Execution tab * 4) Actions -A random sampling 100 jobs LHS checked
5) Start simulation
The other parameter range.... I attached HYOJUNG.jep
@@Area per person@@ [15:0.1:25]
@@Wat per Area@@ [5:0.1:20]
@@E_Wat per Area@@ [5:0.1:20]
You can chech lots of parameters!!
Thank you so much!!
RE: Two questions. - navid - 07-30-2015
Hi,
First, you should know that jEPlus cannot do sensitivity analysis but parametric study.There is a bit difference between them.Second,There are lots of sensitivity analysis methods to choose,especially in building performance analysis.Which one are you going to use? variance-based sensitivity analysis,One-at-a-time (OAT/OFAT), Regression analysis,morris method,...???Bear in mind that local methods are false to choose for building performance analysis.A random sampling 100 jobs LHS is too little ,it must be more than 500 or 1000 sample points, at least. Tell me which one are you going to use please?
You should read the Global Sensitivity Analysis books or papers to learn Global Sensitivity Analysis methods and then implement them on jEPlus outputs.
Navid Delgarm