I'm comparing the eigenvalues computed by np.eig(np.dot(A.T, A))**2 and np.eig(A). I found some values are the same but some are not. Can anybody tell me why would this happen?
different eigenvalues from np.eig and np.svd
147 Views Asked by aldin At
1
There are 1 best solutions below
Related Questions in PYTHON
- new thread blocks main thread
- Extracting viewCount & SubscriberCount from YouTube API V3 for a given channel, where channelID does not equal userID
- Display images on Django Template Site
- Difference between list() and dict() with generators
- How can I serialize a numpy array while preserving matrix dimensions?
- Protractor did not run properly when using browser.wait, msg: "Wait timed out after XXXms"
- Why is my program adding int as string (4+7 = 47)?
- store numpy array in mysql
- how to omit the less frequent words from a dictionary in python?
- Update a text file with ( new words+ \n ) after the words is appended into a list
- python how to write list of lists to file
- Removing URL features from tokens in NLTK
- Optimizing for Social Leaderboards
- Python : Get size of string in bytes
- What is the code of the sorted function?
Related Questions in NUMPY
- How can I serialize a numpy array while preserving matrix dimensions?
- store numpy array in mysql
- Trying to save an np array with string and floats, but getting a error
- Does numpy broadcast in *all* of its functions?
- Is there any implementation of hstack in gnumpy
- Mayavi - color vectors based on direction instead of magnitude
- How to install scipy misc package
- Numpy Vs nested dictionaries, which one is more efficient in terms of runtime and memory?
- How to count distance to the previous zero in pandas series?
- Changing the amount of points changes the result of the fft
- Succint way of handling missing observations in numpy.cov?
- Fastest Way to access and put values in matrix
- Enforcing that inputs sum to 1 and are contained in the unit interval in scikit-learn
- Cython speed vs numpy
- Best practice for using common subexpression elimination with lambdify in SymPy
Related Questions in LINEAR-ALGEBRA
- inverse of randomly generated binary matrix in matlab
- C++: Lagrange Polynomial interpolation to interpolate polynomial defined over a field
- Linear equation solver Arduino,printing wrong answers
- Can somebody explain to me what 'void postConcat' in Android does?
- Algebra for programming
- Multiply high order matrices with numpy
- Largest linear Independent subset of n polynomials
- Finding a vector that is approximately equally distant from all vectors in a set
- TypeError: zip argument #1 must support iteration (Vector sum for Ipython)
- Filling and manipulating matrices using MathNet.Numerics
- Carefully mending "Objects are not aligned" error in python, with matrices
- Constrained random solution of an underspecified system of linear equations
- Python: how to solve a system of equations
- Confused with pdpotrf arguments
- What does three.js's Matrix4.multiply() method do?
Related Questions in SVD
- Strange predictions using SVD in mahout
- Truncated SVD Collaborative Filtering
- Single Value Decomposition in Matlab is slightly off
- Matlab line fitting: Singular value decomposition (SVD)
- Applying scipy.sparse.linalg.svds throws a Memory Error?
- Calculate SVD on a TF-IDF matrix
- Error in calculating the best fitting planar equation using SVD
- Re-orthogonalizing matrix with Eigen
- How can PCA be used for SIFT or VLAD vectors?
- svd of a VERY LARGE sparse matrix
- Incorrect angle detected between two planes
- R - Infinite or missing values in 'x'
- SVD with missing values in R
- Mahout ssvd usage
- cocktail party algorithm SVD implementation ... in one line of code?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
There is no mathematical reason to expect that the eigenvalues of A should be equal to the squares of the eigenvalues of (A.T * A). For example, the eigenvalues of A might be complex, whereas the eigenvalues of A.T * A are guaranteed to be real because A.T * A is a symmetric matrix.