Discover and read the best of Twitter Threads about #stats

Most recents (24)

Do you love 3D maps, worlds & visualisations? Here are 24 world creators, mapmakers, or visuals I've come across recently. Brilliant and creative minds using many different tools! PART 1 #dataviz #GISchat #3dmaps #map #gis #3d 1/🧵
Steven Kay | @stevefaeembra creates many original and cool #3dmaps such as this great visualisation of Windturbines in the British Isles. Follow him! #Blender3D and #QGis are his tools. #SDGs #Wind #b3d 2/🧵
Neil Southall | @neilcfd1 creates fantastic #3dmaps such as this hypnotising animation of #LiDAR data of Copenhagen. He uses #rstats and #rayshader in wonderful ways. #rspatial 3/🧵
Read 25 tweets
I think the message in #DataScience needs to be: Don't believe everything you read. 🧵

#rstats
I'd like to thank Rafael Nicolas Fermin Cota for pointing me to this modified graphic from a recent Harvard Business Review article on "Prioritizing Which Data Skills Your Company Needs".
You hear Harvard Business Review, & you think this must be legit.

Well, in this case, they dropped the ball.

If you're coming up with an educational plan for your org in 2022, here are some tips...
Read 9 tweets
(1/3) Evaluate models performance with metrica 🚀🚀🚀

Metrica is a new R package that provides functions and tools for quantifying and visualizing models performance 🧵 👇🏼

#rstats #stats #dataviz #machinelearning #OpenSource Image
(2/3) It supports regression, classification, machine learning, and forecasting models using a variety of evaluation metrics such as goodness of fit, confusion matrix, regression plots, and providing custom plots using ggplot2 🌈. ImageImageImage
(3/3) Getting started 👇🏼
install.packages("metrica")

License: MIT 🦄

Resources 📚
Documentation: adriancorrendo.github.io/metrica/index.…
Source code: github.com/adriancorrendo…

Big shout out to Adrian Alejandro Correndo and the rest of the package authors! 🙏🏼
Read 3 tweets
If you are looking for a great introduction to unsupervised learning, I recommend checking @DeepMind introduction to unsupervised learning tutorial 🧵👇🏼

#stats #python #machinelearning #ml #OpenSource
The tutorial fucoses the foundation of unsupervised learning with Python, covering both Probabilistic Models and Neural Networks methods 🌈.
#NeuralNetworks
The tutorial covers topics such as:
✅ Gaussian distribution and Maximum Likelihood Estimates
✅ Clustering with K-means
✅ Autoencoder, multi-layer perceptron
✅ Stochastic gradient descent
✅ Image compression
Read 5 tweets
1/ "Software is eating the world. Machine learning is eating software. Transformers are eating machine learning."

Let's understand what these Transformers are all about

#DataScience #MachineLearning #DeepLearning #100DaysOfMLCode #Python #pythoncode #AI #DataAnalytics
2/ #Transformers architecture follows Encoder and Decoder structure.

The encoder receives input sequence and creates intermediate representation by applying embedding and attention mechanism.

#DataScience #MachineLearning #DeepLearning #100DaysOfMLCode #Python #pythoncode #AI
3/ Then, this intermediate representation or hidden state will pass through the decoder, and the decoder starts generating an output sequence.

#DataScience #MachineLearning #DeepLearning #100DaysOfMLCode #Python #pythoncode #AI #DataScientist #DataAnalytics #Statistics
Read 14 tweets
2/ It is important to standardize variables before running Cluster Analysis. It is because cluster analysis techniques depend on the concept of measuring the distance between the different observations we're trying to cluster.

#DataScience #MachineLearning #DeepLearning
3/ If a variable is measured at a higher scale than the other variables, then whatever measure we use will be overly influenced by that variable.

#DataScience #MachineLearning #DeepLearning #100DaysOfMLCode #Python #pythoncode #AI #DataScientist #DataAnalytics #Statistics
Read 16 tweets
1/ Can you classify something without seeing it before - that's what Zero-Shot Learning is all about - A Thread

👉 One of the popular methods for zero-shot learning is Natural Language Inference (NLI).

#DataScience #DeepLearning #MachineLearning #100DaysOfMLCode #Pytho
3/ In Zero-shot classification, we ask the model to classify a sentence to one of the classes (label) that the model hasn't seen during training.

#DataScience #MachineLearning #100DaysOfMLCode #DataScientist #Statistics #programming #ArtificialIntelligence #Data #pythoncode #AI
Read 13 tweets
1/ Why do we need the bias term in ML algorithms such as linear regression and neural networks ? - A thread

#DataScience #MachineLearning #100DaysOfMLCode #DataScientist #Statistics #programming #ArtificialIntelligence #Data #pythoncode #AI #Stats #DeepLearning #100DaysOfCode Image
2/ In linear regression, without the bias term your solution has to go through the origin. That is, when all of your features are zero, your predicted value would also have to be zero.

#DataScience #MachineLearning #100DaysOfMLCode #DataScientist #Statistics #programming Image
Read 7 tweets
1/ #MachineLearning #Interview questsion -
Why L1 regularizations causes parameter sparsity whereas L2 regularization does not?

#DataScience #MachineLearning #100DaysOfMLCode #DataScientist #Statistics #programming #ArtificialIntelligence #Data #pythoncode #AI #Stats
2/ L1 & L2 regularization add constraints to the optimization problem. The curve H0 is the hypothesis. The solution to this system is the set of points where the H0 meets the constraints.

#DataScience #MachineLearning #100DaysOfMLCode #DataScientist #Statistics #programming Image
3/ Regularizations in statistics or in the field of machine learning is used to include some extra information in order to solve a problem in a better way.

#DataScience #MachineLearning #100DaysOfMLCode #DataScientist #Statistics #programming #ArtificialIntelligence #Data
Read 7 tweets
Dalot vs Wan bissaka
Which is better in stats PER 90???
--------------------------------------------

Let's start with passes we see that dalot and wan bissaka in passes per 90 they have many similarities,but the assist statistic and key passes is axtual very bad... Image
Then we continue and we see the defensive actions , now we see some differences in the number we can see that dalot in many things he is actually better than Wan Bissaka and he improved a lot these months in contrast wan bissaka that he is better only for blocks Image
Per 90 minutes we see that dalot helps a lit bit more in passes that lead for shot attempt or a goal , that means dalot better in offensive and defensive things than wan bissaka Image
Read 8 tweets
Z-Scores are a great #Stats tool to help give us some insight into a data set, especially in the #Bitcoin and On-Chain world.

So, what exactly is a Z-Score? What is it good for? What are its limitations? What kinds of Z-Scores are there?

Let's dive in.👇🧵
Before we can talk Z-Scores though, we need to talk Standard Deviation (SD).

What's that you say?

Well, a SD is, essentially, the "average distance from the average (mean)" for a set of data points. Image
A Z-Score, then, takes each individual point's distance from the mean and compares that to the SD.

So essentially saying, "how does this point's distance from the mean compare to the SD?". Image
Read 20 tweets
Petit thread sur l'usage des intervalles de confiance dans les sondages politiques. Ici en utilisant le dernier sondage en rolling de l'IFOP pour les présidentielles françaises 👇

#Presidentielle2022 #Sondage #stats Image
La présentation de ce sondage inclue une notice méthodologique avec un intervalle de confiance générique à utiliser. Celui-ci est exact, même s'il faut faire l'impasse sur la méthode de quota utilisée ici. Image
Mais il ne contient pas les intervalles de confiance pour chaque résultat. J'ai cherché à les ajouter à partir des données fournies leur notice méthodologique et les conclusions sont assez différentes. Première conclusion : ce n'est pas facile...
Read 24 tweets
🚨Job talk thread🚨

Title: What Can *Conformal Inference* Offer to Statistics?

Slides: lihualei71.github.io/Job_Talk_Lihua…

Main points:
(1) Conformal Inference can be made applicable in many #stats problems
(2) There are lots of misconceptions about Conformal Inference
(3) Try it!

1/n
Conformal Inference was designed for generating prediction intervals with guaranteed coverage in standard #ML problems.

Nevertheless, it can be modified to be applicable in

✔️Causal inference
✔️Survival analysis
✔️Election night model
✔️Outlier detection
✔️Risk calibration

2/n
Misconceptions about conformal inference:

❌ Conformal intervals only have marginal coverage and tend to be wide
✔️ Conformal intervals w/ proper conformity scores achieve conditional coverage & efficiency (short length) if the model is correctly specified

3/n
Read 6 tweets
1/ Continuons notre série "où est passé l'argent de la recherche" avec les études du #SARS_CoV_2 dans les #eaux usées.

Sur le principe, pourquoi pas ?

C'est assez robuste pour y retrouver les #drogues. En France, ces travaux du @CNRS étaient dans @libe

liberation.fr/societe/2013/0…
2/ Le soucis est qu'un #virus c'est pas une molécule.

La bonne nouvelle a été que l'on peut détecter le #SARS_CoV_2 dans les eaux usées !

La moins bonne a été qu'il était difficile de savoir quoi en faire...

Car savoir qu'un virus pandémique circule aide peu.
3/ Au niveau du #dépistage, à peu près aucune étude sur les #eaux usées n'a regardé la #sensibilité ou #spécificité de la méthode.

Quelle variabilité pour un même échantillon ?

Quelle variabilité pour des échantillons pris le même jour à une même station ?
Read 11 tweets
Geographic Data Science with R! 🚀🚀🚀

The R for geographic data science, by @maps4thought, provides an introduction to data science with applications for geographic data. 🧵👇

Images credit: from the book
#rstats #DataScientists #MachineLearning #Stats
The book follows the syllabus of the "R for Data Science" course at the School of Geography, @uniofleicester. The book is still a work in progress, and a draft version is available online.
The book covers to core concepts of data science such as:
✅ Intro to R programming
✅ Data wrangling
✨ Data manipulation
✨ Table operations
✨ Reproducibility
Read 8 tweets
Bayesian Generalized Linear Models with Julia! 🚀🚀🚀

TuringGLM is a new Julia package for GLM models with Bayesian flavor ❤️. As its name implies, the package uses the Turing package on the backend for the regression engine. 🧵 👇🏼

#JuliaLang #TuringLang #DataScience #Stats Image
It enables to specify Bayesian Generalized Linear Models using the formula syntax and returns an instantiated Turing model.
The package is inspired by the R's brms and Python's bambi packages (see links 👇🏼).

#rstats #Python
The package supports the following Bayesian GLM models:
✅ Linear regression
✅ Logistic regression
✅ Poisson regression
✅ Negative binomial regression
✅ Robust Regression
✅ Hierarchical models Image
Read 6 tweets
New book for Bayesian statistics with #Python! 📚📊🚀
The Bayesian Modeling and Computation in Python by
@aloctavodia, @canyon289, and @junpenglao provides an introduction to Bayesian statistics using core Python libraries for Bayesian 🧵 👇🏼

#bayesian #MachineLearning #stats ImageImageImage
The book covers the following four topics:
- Bayesian Inference concepts
- Bayesian regression methods for linear regressions, splines,
- Time series #forecasting
- Bayesian additive regression trees
- Approximate of Bayesian computation
The book's authors are the contributors of PyMC3, ArviZ, Bambi, #TensorFlow Probability, and other #Python libraries:
PyMC3 - docs.pymc.io/en/v3/
Tensorflow Probability - tensorflow.org/probability
ArviZ - arviz-devs.github.io/arviz/
Read 6 tweets
This graph is now dynamically created based upon the latest @CDCofBC dashboard. #vaccineswork, even in the last month of this awful pandemic.

#stats #covidbc #bcpoli #epitwitter

/1 Image
Vaccination effectiveness dashboard

/2 Image
Raw data from @CDCofBC Image
Read 5 tweets
@ATMNE_math panel discussions happening now! Being recorded for those who can't attend live.
Thanks @atomic_math!
Looking forward to panel on "Math 4 All" with @carloliwitter @mslailanur & Michelle McKnight
#MTBoS #iTeachMath
Michelle: Math 4 All means all Ss see themselves as math do-ers & thinkers & communicators. No obstacles are being set up by us, so all Ss see themselves as "math people"
@mslailanur : Meet all Ss where they are
@mslailanur @carloliwitter Everyone should have the access to all the math, so everyone can have the opportunities & options.
Reminded of Bob Moses, radical equations.
Read 24 tweets
hello #psychology #stats twitter!

a while ago i promised some graphs on why #removing #outliers using a simple cut-off (eg, >2SDs) is a #bad idea

so that I can sleep at night again, here they are

tldr: DON'T (blindly) USE FIXED OUTLIER CUT-OFFS LIKE >2SD. EVER.

1/15
for some reason, it's very common in #psychology to remove 'outliers' from data

most common way: exclude data more than two standard deviations from mean

we spend time & money collecting data, then throw 5% away

🤷

I don't know why, or where it's taught, but there it is

3/15
Read 30 tweets
#ichimoku Pour faire suite à , le lien entre ce modèle 2A-A et pourquoi #Hosoda aurait construit #kinkohyo et #kumo de façon similaire, avec l'explication de la projection en 26 du Kumo.
(en attendant les vidéos d'@kieffer_herve 😉)
Formalisme 2A-A : spans, Kinko Hyo et Kumo, pourquoi #Hosoda n'a pas fait les choses au hasard avec son #Ichimoku
Pour compléter l'explication des spans, du #KinkoHyo et du #Kumo dans le formalisme 2A-A ( et ) avec en plus une explication possible du retracement statistique à 62.5% environ 😃
#Hosoda #Ichimoku Image
Read 40 tweets
1/ A thread on @pendle_fi, one of the most understimated projects that recently launched on mainnet. Pendle is a protocol that enables the trading and hedging of yield and currently supports two yield-generating tokens: aUSDC and cDAI, both products expire on December 29th, 2022.
2/ A deposit of aUSDC is separated into OT-aUSDC (OT represents the ownership of the underlying token deposited) and YT-aUSDC (representing the ownership of the future yield generated).
3/ @pendle_fi created a USDC liquidity pool for YT-aUSDC and YT-cDAI to price their markets, this is achieved providing incentives,
Read 14 tweets
The latest figures about the 10000s of #britsinFrance #latvia #luxembourg #malta who haven't applied for residence makes alarming reading. With a #harddeadline of #30June, my latest piece for @ukandeu examines the #stats 1/
ukandeu.ac.uk/british-citize…
It addresses who might fall between the gaps - building in my experience in working with British citizens living in France over the course of the #brexitnegotiations 2/
research.gold.ac.uk/id/eprint/2977…
And calls for these countries to extend their deadlines for applications and develop communication strategies to target hard-to-reach populations. And I'm not alone @BritishInEurope have released a statement to the same effect 3/⬇️⬇️⬇️britishineurope.org/articles/75313…
Read 6 tweets

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