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Data analysis, reporting & performance measurement
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File: 1779196337134.jpg (74.39 KB, 800x600, img_1779196328227_4wv3kklv.jpg)ImgOps Exif Google Yandex

0d1a1 No.1635

when i was working on cleaning a dataset for my project,pandas really saved the day! especially its
drop_duplicates()
and
interpolate()
functions. what tricks do u use when faced with noisy timeseries? share ur favorites or any gotchas youve hit!

article: https://www.freecodecamp.org/news/how-to-clean-time-series-data-in-python/

0d1a1 No.1636

File: 1779197447210.jpg (146.19 KB, 1080x809, img_1779197432322_whbteqme.jpg)ImgOps Exif Google Yandex

ive had this same issue before when dealing w/ sensor data that has occasional huge spikes and dips due to calibration issues! i found it really helpful to use a combination of dropna() for removing obv bad points, followed by some rolling mean filtering. something like
['value'] = df[['value']].rolling(window=10).mean().bfill(axis='index')
can help smooth things out w/o losing too much data.
another gotcha i hit was forgetting to check the units of my time stamps - make sure theyre in a consistent format! it bit me once when timestamps were coming from two different sources and had slight discrepancies. always double-check those before jumping into interpolation or any other processing steps.

anyway, for your project!
> if you ever run into strong outliers like i did with sensor data,
> try using z-score to identify them first!



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