estimation

问题 How would one go about Calculating the Dictionary Size(no.of unique words) of a collection using Zipfs Law? 回答1: You will have to tokenize your collection, e.g. by white-space and punctuation. Then you store all the tokens in a hash and count. What you do is then plot the distribution of the counts using a tool like Gnuplot . 来源： https://stackoverflow.com/questions/47543798/estimate-dictionary-size-using-zipf-s-law

问题 How would one go about Calculating the Dictionary Size(no.of unique words) of a collection using Zipfs Law? 回答1: You will have to tokenize your collection, e.g. by white-space and punctuation. Then you store all the tokens in a hash and count. What you do is then plot the distribution of the counts using a tool like Gnuplot . 来源： https://stackoverflow.com/questions/47543798/estimate-dictionary-size-using-zipf-s-law

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . Does anyone use a rule of thumb basis to estimate the effort required for testing as a percentage of the effort required for

问题 Are you experienced with both ASP.NET and WPF coding? If so, I'll be grateful if you'll share your experience, please. We are estimating a 100-screen WPF project. Our estimation methodology involves characterizing the complexity of each screen. We then apply a standard number for the development time, based on the complexity and the technology. The standard number is based on the developer being good , not a super-star. For example, here's a screen: The user selects a row in the master grid,

问题 I have written application that is analyzing data and writing results in CSV file. It contains three columns: id , diff and count . 1. id is the id of the cycle - in theory the greater id, the lower diff should be 2. Diff is the sum of (Estimator - RealValue)^2 for each observation in the cycle 3 count is number of observation during cycle For 15 different values of parameter K, I am generating CSV file with name: %K%.csv , where %K% is the used value. My total number of files is 15. What I

问题 I have written application that is analyzing data and writing results in CSV file. It contains three columns: id , diff and count . 1. id is the id of the cycle - in theory the greater id, the lower diff should be 2. Diff is the sum of (Estimator - RealValue)^2 for each observation in the cycle 3 count is number of observation during cycle For 15 different values of parameter K, I am generating CSV file with name: %K%.csv , where %K% is the used value. My total number of files is 15. What I

问题 I have tried to reproduce the script of the following link: Parameters estimation on Lotka Volterra model with Scilab And I get similar errors in the results to those described in it.. You could guide me to run the script without errors. Gracias Hermes 回答1: Solution for Scilab 5.5.1 or smaller The problem is that the solver somehow reach a point where it cannot solve the ode on every t and stops at a certain point. Thus your y_calc is smaller than y_exp in size. If this is not a problem for

问题 I have described a model and i would like to fit in the Curve,I am obtaining an Error in this context , kindly review it. function c = model(t, a1, a2, a3, b1, b2, b3, td, tmax) c = zeros(size(t)); ind = (t > td) & (t < tmax); c(ind) = (t(ind) - td) ./ (tmax - td) * (a1 + a2 + a3); ind = (t >= tmax); c(ind) = a1 * exp(-b1 * (t(ind) - tmax))+ a2 * exp(-b2 * (t(ind) - tmax)) + a3 * exp(-b3 * (t(ind) - tmax)); ft = fittype('model(t, a1, a2, a3, b1, b2, b3, td, tmax)', 'independent','t'); fo =

问题 Yesterday I finalised the code for detecting the audio energy of a track displayed over time, which I will eventually use as part of my audio thumbnailing project. However I would also like a method that can detect the pitch of a track displayed over time, so I have 2 options from which to base my research upon. [y, fs, nb] = wavread('Three.wav'); %# Load the signal into variable y frameWidth = 441; %# 10 msec numSamples = length(y); %# Number of samples in y numFrames = floor(numSamples

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . What are your experiences regarding project planning and creating hour estimates for new projects? What is the approach you are using, and why has or has it not worked for you? Are there any best practices to take into account? 回答1: Estimation Tasks The principles that I try to use (I don't always get the