How can I code Vuong's statistical test in Python? Question: I need to implement Vuong’s test for non-nested models. Specifically, I have logistic-regression models that I would like to compare. I have found implementations in R and STATA online, but unfortunately I work in Python and am not familiar with those frameworks/languages. Also unfortunate is …
Dataframe cannot delete nan Question: Ive a dataframe I created from a .csv. The Dataframe has a DatetimeIndex and and one column containing stock prices(float64). When creating the dataframe I set frequency to ‘D’ and now i have nan entries for weekends. ive tried dropna() but everytime i check with head(10) the nan’s remain. if …
Iterating through a list of acceleration to calculate final velocity and then usign the answer as the initial velocity of the next Question: I am new to coding and am trying to gain a graph of speeds as acceleration varies. (i have coded the drag force on a car (values from CFD) and at varying …
Bifurcation diagram of dynamical system Question: TL:DR How can one implement a bifurcation diagram of a seasonally forced epidemiological model such as SEIR (susceptible, exposed, infected, recovered) in Python? I already know how to implement the model itself and display a sampled time series (see this stackoverflow question), but I am struggling with reproducing a …
How to extrude an extrusion using VTK python ..how to convert the first extrusion to something useable in vtkLinearExtrusionFilter()? Question: Funny question, and I am really new to this (please dont assume i know anything lol) But I have taken a set of points and converted to a polyline (polydata) and then extruded this polydata …
How to build a lift chart (a.k.a gains chart) in Python? Question: I just created a model using scikit-learn which estimates the probability of how likely a client will respond to some offer. Now I’m trying to evaluate my model. For that I want to plot the lift chart. I understand the concept of lift, …
Modeling a linear system with Python Question: I would like to simulate/model a closed-loop, linear, time-invariant system (specifically a locked PLL approximation) with python. Each sub-block within the model has a known transfer function which is given in terms of complex frequency H(s) = K / ( s * tau + 1 ). Using the …
