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predict matlab
Hi, and thanks for your reply.
My code is correct as i see it. I'm using 1 hidden layer of about 10-20 neurons and i've tried using different number of past values. I noticed that i get better results when using 1 hidden layer instead of 2. But the overall prediction is not good...
predictions with matlab
Thanks for your answer.
I'm using matlab and a backpropagation neural network. The training is done by giving it as input the last 10 measurements and targeting it to the next(assuming all i want is the n+1 prediction). But it doesn't learn!
Now i'll search about what...
nural network
Hi,
i have a set of measurements(about 1000) about the intensity of the wind and these are taken at intervals of 10min on the same place. I need to predict the intensity of the wind for the next 2 hours(the new 12 measurements).
I don't know how to model this as a neural network...
From a first look, i think those equations are for a syncronous counter, not an asynchronous. I don't have time right now to look into it and say for sure.
But if they are indeed for asynchronous i'd like to know too how we concluded those equations.
Hi, can you tell me a book that has solved examples/problems on Amplitude and Angle modulation? For now, i care only for this part of communications. (i have the knowledge on fourier transform and stochastic processes).
I have the books by Proakis, Haykin and Lathi but all of them focus on the...
Thanks for your response. Now it makes sense where that equation came from, but i think (from what I concluded from the net) that the input must not change more than 0.5LSB during Dt,so dv/dt*Dt <= 0.5LSB and this simplifies to the equation in my book.
When the sampling frequency is f then...
Hi, I have the following problems:
1)We have an A/D converter. The analog signals have a maximum change of 2.5V/μs (2.5 V per 10^-6 second). The sampling frequency is 200KHz.The conversion range is from -2.5V to 2.5V and also the converter has 8 bits. Calculate the needed holding time of the S/H...
Thanks for your reply.
I see what you mean: Rmax=max/min and Rmin=min/max.
But then the Iz wouldn't go outside it's limits? For example for Vin=25V, Il=400mA, R=31 Ohms(in the range) then the Iz=6mA<Izmin and if we increase more the resistance R then Iz would become negative.
Don't we want for...
Hi, it's a simple problem for most of you guys. The problem is as follows:
We have Vin=23-25V , Vz=12.4, Izmin=10mA, Izmax=250mA and the load current IL=20-400mA. (Suppose that instead the RL we have a current source).
For simplicity we don't care about RL or about the zener resistance.
What we...
Re: Which transistor is OFF?
Actually the problem wanted the graph at Vout=Vc2.
But i stuck trying to do DC analysis because the system of equations in the start of the topic doesn't have a solution if vin1!=vin2.
That's why i wanted to know how to do dc analysis with different vin1,2 and i...
Re: Which transistor is OFF?
It's an exercise that the professor at the university mentioned.
If the circuit had two more resistances RE1 and RE2 after the emitter of each transistor and the wire that is going to R started between those two then it's easy to see whether the transistors work or...
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