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Questions tagged [logistics]

Logistics refers to the overall process of managing how resources are acquired, stored, and transported to their final destination. The "how" often includes an optimization aspect: many "ways" are possible, and we must choose one that is "best" (or, due to limitations, at least "good enough") in some sense.

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Difference between SimpleLogistic and Logistic in Weka

I am working on Weka, but i cannot understand the difference between SimpleLogistic and Logistic classifier. Does anybody know the difference?
user1769484
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How do you manage large git repositories?

One of our git repositories is large enough that a git-clone takes an annoying amount of time (more than a few minutes). The .git directory is ~800M. Cloning always happens on a 100Mbps lan over ssh. Even cloning over ssh to localhost takes more…
Dale Forester
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Vehicle Routing / Resource Scheduling Algorithm Design

My first post here – hoping you can help me with designing an algorithm that I’ve been considering for a little while now – not sure what approach to take (VRPTW or resource scheduling or something else entirely!?) To put it into a real word…
will-hart
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R:Time dependent parameters in differential equations for Chemistry calculation (working)

edit: there was an error in the formula, and now everything works as expected. Thanks for the suggestions that made me review the code I'm trying to study a quite famous chemistry equation Šesták–Berggren that represent a powerful tool for the…
Jojostack
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How to parallel run independent loops on Tensorflow in GPU

I want to implement the algorithm to reconstruct Restricted Boltzmann Machines via simulation. The M is number of visible variables and N is number of hidden variables. In order to parallel run on GPU, I want to write it on tensorflow using python…
JJsmith
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cv.glm Issue with missing factors in R

I am testing the performance of a logistic regression using the cv.glm crossvalidation procedure of the boot library in R. Some of my predictor variables are factors. When I run it I get the following error message: Error in…
user695652
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Logistic Regression Using R

I am running logistic regressions using R right now, but I cannot seem to get many useful model fit statistics. I am looking for metrics similar to SAS: http://www.ats.ucla.edu/stat/sas/output/sas_logit_output.htm Does anyone know how (or what…
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Complex Count: count opportunities for aggregation

I am struggling how to get the output I need to provide for a report. I am trying to show what products(LPN) I can combine, to free up space in a warehouse and how many of these opportunities there are. The below code pulls all the data I need but…
Jonathan
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polr(..) ordinal logistic regression in R

I'm experiencing some trouble when using the polr function. Here is a subset of the data I have: # response variable rep = factor(c(0.00, 0.04, 0.06, 0.13, 0.15, 0.05, 0.07, 0.00, 0.06, 0.04, 0.05, 0.00, 0.92, 0.95, 0.95, 1, 0.97, 0.06, 0.06, 0.03,…
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Run nested logit regression in R

I want to run a nested logistic regression in R, but the examples I found online didn't help much. I read over an example from this website (Step by step procedure on how to run nested logistic regression in R) which is similar to my problem, but I…
Ferrari
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Facility Location - Algorithm to Minimize facilities serving customers with distance constraint

I have for example, 1000 customers located in Europe with different latitude and longitude. I want to find the minimal number of facilities that can serve all customers, subject to the constraint that each customer must be served within 24hr…
Jack
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Optimization algorithms for Distribution and Logistics scenario

I am looking for a way to express the following logistics/distribution problem as an equation that can be run thru a solver to find an optimal solution (or for a known algorithm that would fit this problem best): assume there is a distribution…
Johnny
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Logistic mapping in gnuplot

I have quite big problem when it comes to plotting data. First, I've obtained file data.dat from my c++ program, which implements the logistic map. Data.dat looks as follows: first column should be the number k which should be on the bottom of the…
xxxxx
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How do I apply scikit-learn's LogisticRegression for some decimal data?

I've the training data set like this: 0.00479616 | 0.0119904 | 0.00483092 | 0.0120773 | 1 0.51213136 | 0.0113404 | 0.02383092 | -0.012073 | 0 0.10479096 | -0.011704 | -0.0453692 | 0.0350773 | 0 The first 4 columns is features of one sample…
WoooHaaaa
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Are there resources about logistics?

I couldn't find any complex resources in Google. Maybe the key words that I used were wrong. I am interested in web-sites, book titles, book authors etc.. I'm looking general theory. UPD: Previous title of the question was: "Are there resources…
Max
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