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python Programming Glossary: kernelHow accurate is python's time.sleep()? http://stackoverflow.com/questions/1133857/how-accurate-is-pythons-time-sleep you are running Ubuntu you can try out a pseudo real time kernel with the RT_PREEMPT patch set by installing the rt kernel package.. kernel with the RT_PREEMPT patch set by installing the rt kernel package at least in Ubuntu 10.04 LTS . EDIT Correction non realtime.. in Ubuntu 10.04 LTS . EDIT Correction non realtime Linux kernels have minimum sleep interval much closer to 1ms then 10ms but..
Python: tf-idf-cosine: to find document similarity http://stackoverflow.com/questions/12118720/python-tf-idf-cosine-to-find-document-similarity scikit learn already provides pairwise metrics a.k.a. kernels in machine learning parlance that work for both dense and sparse.. we need a dot product that is also known as the linear kernel from sklearn.metrics.pairwise import linear_kernel cosine_similarities.. linear kernel from sklearn.metrics.pairwise import linear_kernel cosine_similarities linear_kernel tfidf 0 1 tfidf .flatten cosine_similarities..
python image recognition [closed] http://stackoverflow.com/questions/1603688/python-image-recognition post didn't present the function that produces a gaussian kernel needed in the algorithm. Here's an example of a such a function.. gauss_kern size sizey None Returns a normalized 2D gauss kernel array for convolutions size int size if not sizey sizey size..
How to limit Python heap size? http://stackoverflow.com/questions/2308091/how-to-limit-python-heap-size that tries to allocate massive amounts of RAM causing the kernel to heavily swap and degrade the performance of other running..
Inverse Distance Weighted (IDW) Interpolation with Python http://stackoverflow.com/questions/3104781/inverse-distance-weighted-idw-interpolation-with-python the ratios matter. In contrast the commonly used Gaussian kernel exp distance h 2 is exceedingly sensitive to distance and to.. h 2 is exceedingly sensitive to distance and to h. # anykernel dj av dj is also scale free # error analysis f x idw x todo..
How can I “watch” a file for modification / change? http://stackoverflow.com/questions/3274334/how-can-i-watch-a-file-for-modification-change notifier.loop This is more efficient than polling. The kernel tells you when it does the operation without you having to constantly..
How can I improve my paw detection? http://stackoverflow.com/questions/4087919/how-can-i-improve-my-paw-detection footprint. It would be more efficient to just use a larger kernel the structure kwarg to the various scipy.ndimage.morphology..
Using strides for an efficient moving average filter http://stackoverflow.com/questions/4936620/using-strides-for-an-efficient-moving-average-filter array then rolls it by the necessary amount and sums the kernel values to compute the average. I am aware that the edges are.. 3 2 3 4 ... which corresponds to the top row of the filter kernel. Roll along the vertical axis to get the middle row of the kernel.. Roll along the vertical axis to get the middle row of the kernel 10 11 12 11 12 13 13 14 15 ... and add it to the array I got..
Detect File Change Without Polling http://stackoverflow.com/questions/5738442/detect-file-change-without-polling Pyinotify relies on a Linux Kernel feature merged in kernel 2.6.13 called inotify. inotify is an event driven notifier its.. event driven notifier its notifications are exported from kernel space to user space through three system calls. pyinotify binds.. is obviously not cross platform and relies on a new enough kernel version. However as far as I can see requiring kernel support..
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell http://stackoverflow.com/questions/6964392/speed-comparison-with-project-euler-c-vs-python-vs-erlang-vs-haskell erts 5.7.4 source 64 bit smp 4 4 rq 4 async threads 0 hipe kernel poll false Eshell V5.7.4 abort with ^G 1 842161320 real 0m48.259s..
Flask not getting any data from jQuery request data http://stackoverflow.com/questions/11839855/flask-not-getting-any-data-from-jquery-request-data print flask.__version__ ' 0.8 uname a Darwin 10.8.0 Darwin Kernel Version 10.8.0 Tue Jun 7 16 33 36 PDT 2011 root xnu 1504.15.3~1..
Detecting reflective DLL injection http://stackoverflow.com/questions/12697292/detecting-reflective-dll-injection for regular DLLs as LoadLibrary handles this inside the Kernel space. right TODO verify Normally the PE header is located 0x1000..
Python: How do you stop numpy from multithreading? http://stackoverflow.com/questions/17053671/python-how-do-you-stop-numpy-from-multithreading environment variable controls the behavior of the Math Kernel Library which is included as part of Enthought's numpy build...
Python crashing when running two commands (Segmentation Fault: 11) http://stackoverflow.com/questions/18158381/python-crashing-when-running-two-commands-segmentation-fault-11 0K 0 unallocated 25.2M 91 REGION TYPE VIRTUAL Kernel Alloc Once 4K MALLOC 19.4M MALLOC admin 16K STACK GUARD ..
CPython memory allocation [closed] http://stackoverflow.com/questions/18522574/cpython-memory-allocation OS specific Virtual Memory Manager VMM 1 Kernel dynamic storage allocation management page based __________________________________..
Custom data types in numpy arrays http://stackoverflow.com/questions/2350072/custom-data-types-in-numpy-arrays what I'd like to do and what happens if I do it. class Kernel pass L np.empty 4 dtype Kernel TypeError data type not understood.. happens if I do it. class Kernel pass L np.empty 4 dtype Kernel TypeError data type not understood I can do this L np.empty.. 4 dtype object and then assign each element of L as a Kernel object or any other type of object . It would be so neat were..
Detect File Change Without Polling http://stackoverflow.com/questions/5738442/detect-file-change-without-polling filesystems changes. Pyinotify relies on a Linux Kernel feature merged in kernel 2.6.13 called inotify. inotify is an..
mysql-python installation problems (on mac os x lion) http://stackoverflow.com/questions/7335853/mysql-python-installation-problems-on-mac-os-x-lion as well uname a gives Darwin ajmacbook.local 11.1.0 Darwin Kernel Version 11.1.0 Tue Jul 26 16 07 11 PDT 2011 root xnu 1699.22.81~1..
Running webdriver chrome with Selenium http://stackoverflow.com/questions/8255929/running-webdriver-chrome-with-selenium lang python 2.7.2 r3 Selenium 2.11.1 OS GNU Linux Gentoo Kernel 3.1.0 gentoo r1 python linux google chrome selenium web testing..
How to install JPype on OS X Lion to use with Neo4j? http://stackoverflow.com/questions/8525193/how-to-install-jpype-on-os-x-lion-to-use-with-neo4j my machine uname a Darwin fatty i7.local.tld 11.2.0 Darwin Kernel Version 11.2.0 Tue Aug 9 20 54 00 PDT 2011 root xnu 1699.24.8~1..
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