Comments (8)
@dvdcoliveira what version of the library are you using? Is it the latest (0.0.8)?
from matrixprofile-ts.
Hi! @vanbenschoten,
I was using python version 3.7.1 and matrixprofile-ts version 0.0.6. I updated to 0.0.8 but the problem still persists.
If I use scrimp++ this does not happen.
Additional information:
- numpy version 1.15.4
- Windows version 10 Enterprise.
Many thanks for the support,
David
from matrixprofile-ts.
Hi,
Found the same issue when appending a constant value zero to the rawdata example.
Solve it by adding a very small noise to the example pattern:
N = 1046
ix = np.arange(N)
signal = np.sin(2*np.pi*ix/float(32))*0.01
m = 32
mp = matrixProfile.stomp(pattern+signal,m)
Probably it's a problem with the time series z normalization. When I run the matrixprofile with the constant values I get the following errors:
- matrixprofile\utils.py:177: RuntimeWarning: divide by zero encountered in true_divide
- utils.py:200: RuntimeWarning: divide by zero encountered in true_divide
- distanceProfile.py:126: RuntimeWarning: invalid value encountered in sqrt
- matrixProfile.py:249: RuntimeWarning: invalid value encountered in less idsToUpdate = distanceProfile < mp
Hope it helps,
Alex
from matrixprofile-ts.
@AlexandreRodrigues1 thanks much for the contribution! @aouyang1 did you ever figure out a solution to this challenge for go-matrixprofile?
from matrixprofile-ts.
Thank you to @vanbenschoten and the other contributors too, for the excellent job done in implementing the Matrix Profile algorithms in python :)
from matrixprofile-ts.
I'll need to test this case as well. I don't believe the golang version handles this nicely either. Hopefully can get back to you all on this in the next few days
from matrixprofile-ts.
This is the same as #11
from matrixprofile-ts.
Closing as issues is same as #11
from matrixprofile-ts.
Related Issues (20)
- import error
- ā ļø Archival Notice HOT 1
- stumpy HOT 2
- Definition and explanation of parameters HOT 7
- Exclusion Zone
- Return actual distances from MASS instead of squared distances HOT 2
- motifs.motifs throws exceptions on larger arrays HOT 1
- Question: Finding Shared Motifs for Clustering HOT 2
- O(nĀ²) Memory Requirements for _stamp_parallel()
- Complexity Measure confuses mean and sum HOT 1
- Duplicate license files: remove License.md? HOT 4
- How to handle NaN and INF values in utils.py movmeanstd and movstd
- Stomp increment is missing HOT 2
- MPdist
- matrixProfile.stomp() gives nan and inf values HOT 5
- Annotation Vector file missing from latest matrixprofile-ts build HOT 3
- ValueError: Length of values does not match length of index HOT 1
- Pattern Recognition HOT 6
- What is the difference between matrixprofile and matrixprofile-ts? HOT 8
- Use of 'is' for non-object. HOT 1
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