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Johnny Chan Profile
Johnny Chan

@jAtlas7

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Data Analytics Consultant | Github: Atlas7 | Author https://t.co/13wbIzWQDD | Macro-photographer - https://t.co/PRYabxIx1E

London
Joined May 2014
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@jAtlas7
Johnny Chan
8 years
Developed and deployed my first Big Data Visualization Web Application prototype with #HoloViews #GeoViews #Bokeh #Datashader #Dask #Conda #Docker #PyViz #Python #Heroku - visualizing 136k+ geo data points at different zoom/pan views. Github repo: https://t.co/QpE4lXTdWo
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@jAtlas7
Johnny Chan
4 years
(Pandas) How to get topmost n records within each group - a very simple one liner solution
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@TCVHaringey
TCV Haringey
5 years
#Funky Vapourer #caterpillar just strolling down a #Haringey side street on Saturday. #moth cs
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@jAtlas7
Johnny Chan
8 years
Recently noticed 300+ GB disk storage was being consumed by Redis Local AppData - having read a few articles, have now deleted them all - recovered tons of storage.
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@jAtlas7
Johnny Chan
5 years
Super bookmark of the day: flattening a Pandas dataframe (with json structures in some columns) -
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@TCVLavenderPond
Lavender Pond Nature Reserve
6 years
Thank you @lemon_disco and @jAtlas7 for spotting, taking and sharing photos of these two dragonflies @TCVLavenderPond yesterday. What stunning pics! A Black-tailed Skimmer and Emperor. #SouthwarkNature
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@jAtlas7
Johnny Chan
6 years
Wildlife photography at Horniman Museum Garden: Spider @HornimanMuseum
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@jAtlas7
Johnny Chan
6 years
Wildlife photography at Horniman Museum Garden: Bumble Bee @HornimanMuseum
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@jAtlas7
Johnny Chan
6 years
Great Python / Jupyter tip:
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@jAtlas7
Johnny Chan
7 years
The Crisis of Credit Visualized - HD
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@jAtlas7
Johnny Chan
7 years
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@decisionleader
Cassie Kozyrkov
7 years
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@jAtlas7
Johnny Chan
7 years
"Of the cast of characters mentioned in this story, the only ones that every business needs are decision-makers and analysts. The others you’ll only be able to use when you know exactly what you need them for."
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@jAtlas7
Johnny Chan
7 years
Explainable AI won’t deliver. Here’s why. by @quaesita
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@jAtlas7
Johnny Chan
7 years
Netflix Recommendations: Beyond the 5 stars (Part 2)
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@jAtlas7
Johnny Chan
7 years
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@jAtlas7
Johnny Chan
7 years
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@jAtlas7
Johnny Chan
7 years
Decision Tree example illustrates how Gradient Boosting work in each iteration: (1) make predictions, (2) compute residuals, (3) update predictions with residuals (that reduce residuals and make predictions more accurate in next iteration) by @groverpr4
Tweet card summary image
blog.mlreview.com
Simplifying a complex algorithm
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