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Question
str2double breaks when you pass in a vector?
this works: double = str2double('06012015'); but this doesn't: doubles = str2double(['06012015' '06022015']); whos d...
plus de 9 ans il y a | 2 réponses | 1
2
réponsesQuestion
option chains and neural nets
it seems reasonable to think of option chains as having some predictive power with respect to the price of their underlying secu...
presque 10 ans il y a | 1 réponse | 0
1
réponseQuestion
timeseries and categorical data
I'd like to chart two time series: closing prices, by day, for a given stock, and a set of buy/sell recommendations for that sto...
presque 10 ans il y a | 1 réponse | 0
0
réponseQuestion
how to store a series of single rows that have different numbers of columns
I have a loop that creates a series of single rows that have different numbers of columns I need to collect/store these as th...
environ 10 ans il y a | 3 réponses | 0
3
réponsesQuestion
using 2D data as input for a neural network
have data that i'd like to use as input for a pattern recognition neural net project the data comes as a series of tables, ea...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
how to use histogram(data, num_bins)?
I have a 8945x1 double array, and I want to view it's distribution, as a histogram first try: histogram(data), here's what I ...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
how to use histogram(data, num_bins)?
I have a 8945x1 double array, and I want to view it as a histogram first try: histogram(data), here's what I get: <</matla...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
creating a timeseries inserts extra value at beginning of time vector
I'm using this form to create a timeseries: ts = timeseries(data_vector, datestring_vector) but the ts gets an extra row a...
environ 10 ans il y a | 1 réponse | 0
0
réponseQuestion
why is corrcoef returning NaN's?
I'm passing in a single matrix, lots of rows (est 5k), 2 cols -- there are no NaNs in the data, and the data is all doubles, f...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
neural nets: validation vs testing?
wondering what the real difference is between validation and testing? both are tests of the net, it would seem thanks
environ 10 ans il y a | 2 réponses | 0
