Does the theta0 count 1 variable? did the same as of chethan said but still the issue is not resolved getting the same error y not defined. Question 5Your friend in the U.S. gives you a simple regression fit for predicting house prices from square feet. Hello I am stuck in WK2 PlotData I keep getting errors: >> Qt terminal communication error: select() error 9 Bad file descriptor like that one or error: /Users/a69561/Desktop/machine-learning-ex1/ex1/plotData.m at line 19, column 3Can somebody help me ??

computeCosterror: 'y' undefined near line 8 column 12error: called from computeCost at line 8 column 3gradientDescenterror: 'y' undefined near line 7 column 12error: called from gradientDescent at line 7 column 3How to correct this?

% of the cost function (computeCostMulti) and gradient here. NPTEL 2020 : The Joy of Computing using Python Week 7 – Programming Assignment 2: Rotate the matrix Solutio There must something else you might be missing outside these functions. ), Coursera: Machine Learning (Week 3) [Assignment Solution] - Andrew NG, Coursera: Machine Learning (Week 4) [Assignment Solution] - Andrew NG, Coursera: Machine Learning (Week 5) [Assignment Solution] - Andrew NG, Coursera: Machine Learning (Week 6) [Assignment Solution] - Andrew NG.

I tried to reran the code. Hello, within gradientDescent you use the following code error = (X * theta) - y; theta = theta - ((alpha/m) * X'*error)What is the significance of 'error' in this?

% of the feature and subtract it from the dataset, % storing the mean value in mu. You will understand it. Having problems with nearly everyone of these solutions. Simply (x * error) will work.Try to do it manually on a notebook. While doing in matlab also it is saying error in submitwithconfiguration in submit.m file accutally it was defaultly givern by them but why it is show error there??? View DSP_Tutorial2__DiscreteTimeSignalAndSystem_Solution_V1.pdf from ENGINEERIN ENG3051 at INTI International College Penang. Submission failed: operator *: nonconformant arguments (op1 is 97x1, op2 is 2x1)Function: computeCostFileName:LineNumber: 65Help me please. I have a problem running the below line of code: (X * theta) - y;it gives error: operator *: nonconformant arguments (op1 is 97x1, op2 is 2x1)I can understand because X is a 97x1 matrix and cannot be multiplied with a 2x1 matrix.

Has somebody working version. But I want to know how should I think/(the intuition) or approach to this idea that I need or dnt need sum. * X(:,2)));theta = [t0; t1];you can see that you are missing 2 brackets on each side.

Tutorial 2 Q1 a) Why 1 + n/3 is not 1.333 n 1.666? Click here to see more codes for Raspberry Pi 3 and similar Family. % and then set them accordingly.

Refer the forum within the course in Coursera.They have explained the step to submit the assignments in datails. Please comment below specific week's quiz blog post. Share to Twitter Share to Facebook Share to Pinterest. Any help? Installing Oracle 12c R4 Weblogic Server(Infrastructure) on Windows 64 Bit.

So, you can't get the error like y is undefined.Are you sure you haven't made any mistake like small y and Capital Y ?Please check it and try again. % % ============================================================ % Save the cost J in every iteration J_history(iter) = computeCost(X, y, theta);endendwhile running on octave it's showingRunning Gradient Descent ...error: gradientDescent: operator *: nonconformant arguments (op1 is 97x1, op2 is 2x97)error: called from gradientDescent at line 10 column 8 ex1 at line 77 column 7where is the problem??? %NORMALEQN Computes the closed-form solution to linear regression, % NORMALEQN(X,y) computes the closed-form solution to linear. Question 9 has a wrong answer 11 June 2020 at 18:02 Hasan Jawaid said... Sravan please share correct one! In Linear regression with multiple variables by 1st method ( gradientDescent method) the price value of the house was different whn compared to the 2nd method(Normal Equations).still not able to match the values of both the methods ?Note : i have copied all the code as per your guidance. % the standard deviation in sigma. Coursera Posts.

Machine Learning (Week 2) [Assignment Solution], Linear Regression with Multiple Variables, Machine Learning (Week 3) [Assignment Solution], Machine Learning (Week 4) [Assignment Solution], Machine Learning (Week 5) [Assignment Solution], Machine Learning (Week 6) [Assignment Solution], Machine Learning (Week 7) [Assignment Solution], Machine Learning (Week 8) [Assignment Solution], Machine Learning (Week 9) [Assignment Solution], Post Comments Don't just copy paste the code for the sake of completion. Hint: there are 0.092903 square meters in 1 square foot.

the Predicted prices using normal equations and gradient descent are not equals(NE price= 293081.464335 and GD price=289314.62034) is it correct ?

>> submit()'parts' requires one of the following: Automated Driving Toolbox Navigation Toolbox Robotics System Toolbox Sensor Fusion and Tracking ToolboxError in submitWithConfiguration (line 4) parts = parts(conf);Error in submit (line 45) submitWithConfiguration(conf); This is happening because variable parts has the same name as of parts(conf) function in file ex1/lib/submitWithConfiguration.mMake the following changes to resolve this :Line 4 - parts_1 = parts(conf);Line 92 - function [parts_1] = parts(conf)Line 93 - parts_1 = {};Line 98 - parts_1{end + 1} = part;Basically, I've just renamed the variables.Same thing is happening with one more variable, so make the following changes :Line 66 - submissionUrl_1 = submissionUrl();Line 68 - responseBody = getResponse(submissionUrl_1, body);Line 22: response = submitParts(conf, email, token, parts_1);Line 37: showFeedback(parts_1, response);This worked for me. >> gradientDescent()error: 'y' undefined near line 7 column 12error: called fromgradientDescent at line 7 column 3>> computeCost()error: 'y' undefined near line 7 column 12error: called fromcomputeCost at line 7 column 3 i am getting this kind of error how to solve this, heyi think the errors related to undefined variables are due to people not passing arguments while calling the func from octave window. %%%%%%%%%%%%% CORRECT: Vectorized Implementation %%%%%%%%%, %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%, % =========================================================================, %GRADIENTDESCENT Performs gradient descent to learn theta, % theta = GRADIENTDESCENT(X, y, theta, alpha, num_iters) updates theta by, % taking num_iters gradient steps with learning rate alpha, % Instructions: Perform a single gradient step on the parameter vector, % Hint: While debugging, it can be useful to print out the values.

)But coursera keeps on updating the assignments time to time. In the code, you can variable "y" is defined in parameter list itself.So, logically you should not get that error. i can see you have used a X there not x,still showing the error saying not enough input arguments, Hey Akshay, The error 'y' undefined problem do exist, but it is not othe problem only for the code you gave,any solution the internet gives that error.Even running through gui or through command, it says undefined.There is no clear solution for this on the net, I tried adding path too as it was said in the net.Couldnt solve the issue.I have octave 5.1.0. I tried to re-ran the code and everything worked perfectly fine with me.Please check you code.

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While doing in matlab it is saying error in submitwithconfiguration in submit.m file accutally it was defaultly givern by them but why it is show error there??? I will try my best to answer it.

% of the cost function (computeCost) and gradient here.

* X(:,2))); %theta = [temp0; temp1]; % ============================================================ % Save the cost J in every iteration J_history(iter) = computeCost(X, y, theta);endend, change the variable name of iteration.num_iters must be same with declared variable named iteration.

I am using in the octave. Can both java ve... Click to Download AI for Everyone Week 2 Coursera Solved Quiz, Oracle Forms 12c: Forms Materialized Item, TRANSLATOR - Encryption Decryption Package for Oracle DB, Countries / Cities / Provinces / Areas DB, Oracle Merge. There is no excerpt because this is a protected post. error: 'X' undefined near line 9 column 10error: called from featureNormalize at line 9 column 8, anyone have find the solution?

@Shilp, I think, You should raise your concern on Coursera forum. Set the axes labels using, % the "xlabel" and "ylabel" commands. I will try my best to answer it.

Hey, how do you calculate the value of theta? if you implement featureNormalize this way, it gives dimensions disagreement error so i suggest it would be better to do it in the following way;mu = ones(size(X,1),1)* mean(X);sigma = ones(size(X,1),1)* std(X);X_norm = (X - mu)./(sigma);P.S: it gives me accurate results, I entered submit () ,but I geeting error so pls help to how to submit my assignment. plz helpme out.

NPTEL 2020 : The Joy of Computing using Python Week 7 – Programming Assignment 3: Counter Spiral . hi, thanks for all your help. Hello ,In the gradient descent.m file : theta = theta - ((alpha/m) * X'*error);I m confused, why do we take the transpose of X (X'*error) insteadof X ?Thanks in advanceB. I will be ever grateful to you. I get the below error when executing ex1 for testing the gradientDescent function:error: computeCost: operator *: nonconformant arguments (op1 is 97x2, op2 is 194x1)error: called from computeCost at line 15 column 2 gradientDescent at line 36 column 21 ex1 at line 77 column 7My gradientDescent function has the below lines of code as per the tutorial.temp0 = theta(1) - ((alpha/m) * sum((X * theta) - y) .

Just now i started ML. plotDataerror: 'X' undefined near line 20 column 6error: called fromplotData at at line 20 column 1What is the solution to this? Thank you so much!

Here we have used a Matrix multiplication (Which is nothing but Sum of product operation).Matrix multiplication already consist of sum operation.

% as the x and y arguments of this function.

?submit'parts' requires one of the following: Automated Driving Toolbox Navigation Toolbox Robotics System Toolbox Sensor Fusion and Tracking ToolboxError in submitWithConfiguration (line 4) parts = parts(conf);Error in submit (line 45) submitWithConfiguration(conf); Hi, when I run my code, the predicted price of the house (in ex1_multi.m), it says 0.0000. some of these answers are incorrect. Next, compute the, % standard deviation of each feature and divide, % each feature by it's standard deviation, storing.

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Hello Akshay Daga (APDaga,Very glad to come across your guide on ML by Andred NG.I been stuck months, could complete the Programming Assisgment.Have done up to computeCost but got stuck at gradientDescentBelow is the error. Hi..I am using MATLAB R2015a version offline and getting error submitwithconfiguration(line 158).How to rectify this error?? But i am getting error this:error: 'num_iters' undefined near line 17 column 19error: called from gradientDescent at line 17 column 11how to correct this?? %%%%%%%% CORRECT %%%%%%%%%% error = (X * theta) - y; theta = theta - ((alpha/m) * X'*error); %%%%%%%%%%%%%%%%%%%%%%%%%%%WHY IS NOT HERE "SUM" USED?

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