Recent content by bradyj7

Hi there, I have an equation below for the cost of energy for a house per hour. The house has an energy storage system (i.e.a very large battery) installed. You can charge the battery up and energy from the battery can be used to power the building. For example you can charge the battery...

Hello MAthman, Could you perhaps explain the statistical logic/theory for simulating an event like this? In an other example, I know the probability that somebody will recharge an electric car is 60%. So if I generate a random number and it is less than 0.6 then the person plugs in and...

Hello, I looking for some advice for a simulation. I know that when an electric car arrives at a destination there is a 70% chance that a charging point will be available. I'm building a model that models electric car journeys. When a car arrives at a destination would I simulate a random...

I though the formula would be, sum(charge_events) / (sum(charge_events)+sum(drive_event)), but when I use this formula the probability does not sum to 1. Here is my data https://dl.dropbox.com/u/54057365/All/data.JPG I would be grateful for any comments. Thank you

Hi, I'm reading a paper which calculates the probability of an electric car re-charging. Data has been recorded from a car. There are 2 types of events, a charge event and a Trip (journey) event. The State of charge of the battery (SOC) was recorded at the start of each event. For example a...

Hi, I really struggling with this. Is the P-value form the Chi squared test the percentage difference between the 2 distributions? why did you choose the Chi squared test over the KS test? Thank you

Hi, Well I developed a model which simulates car journeys. The distribution of the arrival times home in the evening simulated by the model is "different" than the actual distribution of the arrival times home observed in actual real world data. The model appears to be not that accurate...

Hello Chiro, Could I ask you a question? You have been very helpful in the past. I am trying to quantify the difference between two discrete distributions. I have been reading online and there seems to be a few different ways such as a Kolmogorov-Smirnov test and a chi squared test...

Hello, I am trying to quantify the difference between two discrete distributions. I have been reading online and there seems to be a few different ways such as a Kolmogorov-Smirnov test and a chi squared test. My first question is which of these is the correct method for comparing the...

Hello Chiro, Could I ask you a question? You have been very helpful in the past. I'm trying to the compare the overall similarity of journeys based on some statistics for example average velocity and acceleration etc. Each journey has for example 4 measurable attributes with equal...

Hello, Thank you for your reply. I do not need to smooth the velocity profiles. Yes, I am trying to compute rms velocity difference between the two velocity variations. My problem is that velocity profiles have different time duration. Hence, I have scaled them to same duration. My...

Hello ChesterMiller, You helped me scale the time parameter of velocity profiles above for a vehicle a number of weeks ago. Thank you. I was wondering if you had the time to help me with something else? When I scale the velocity profiles in excel the resulting times are same length...

Thanks for your comments.

Hi, I'm trying to simulate a discrete time time markov chain in matlab. Unfortunately I am neither a markov chain expert or a good MATLAB coder. My problem is simple, I have a transition probability matrix with 100 states (100x100) and I want to simulate a 1000 steps beginning from state 1...

Thank you for your reply. I don't quite follow the point above. Are you implying above that I compute the MSE between the blue line and the 100 black lines? Getting 100 MSE values? How would you check for time-dependence? Thank you