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🔥 Matt Dancho (Business Science) 🔥 Profile picture
@mdancho84
May 20, 2023 • 10 tweets • 5 min read • Read on X
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BIG ANNOUNCEMENT: I'm beyond excited to announce that in 5 days, I'm launching my brand new course- The #Python for Machine Learning & API's Course.

This course will transform your #career.

Here's what's inside... 🧵

#datascience #course Image
This launch marks the culmination of 2 years of research...

It covers The 6 Top #Python libraries for machine learning and production:
1. #Pycaret: Low-code machine learning Image
2. #ScikitLearn: The premier ML toolkit in Python Image
3. #H2O: Blazing speed + AutoML Image
4. #MLFlow: Easy model lifecycle management Image
5. #FastAPI: Incredibly fast + easy APIs in python Image
6. #Streamlit: Simplified data science web apps Image
Ready to learn more AND advance your career with Python?

Then you can't miss this event.

$400 in giveaways that everyone gets for attending live!
What's the next step?

Just join my course waitlist + live launch event here.

I'm super excited!! 😀

👉Register Here: learn.business-science.io/python-ml-apis… Image

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More from @mdancho84

🔥 Matt Dancho (Business Science) 🔥 Profile picture
May 10
Bayesian data analysis is a fundamental concept in data science. But it took me 2 years to understand its importance.

In 2 minutes, I'll share my best findings over the last 2 years exploring Bayesian Modeling.

Let's go. 🧵 Image
1. Why Bayesian Data Analysis?

Bayesian modeling is a powerful tool in statistics and data science, especially where traditional approaches fall short.

It avoids arbitrary assumptions and provides distributions of possible values instead of just point estimates.
2. Bayes Theorem:

Bayesian modeling is based on Bayes’ theorem.

Bayes' Theorem provides a mathematical formula to update the probability for a hypothesis as more evidence or information becomes available.

It describes how to revise existing predictions or theories in light of new evidence, a process known as Bayesian inference.
Read 10 tweets
🔥 Matt Dancho (Business Science) 🔥 Profile picture
May 8
Why data scientists should stop ignoring AI.

A thread🧵 Image
I get it. Yet another "hypecycle".

In 2016 it was Deep Learning.

Now it's Generative AI. Right?

Wrong. This is why.
1. GenerativeAI is a 10X complement to Data Science

In the past, deep learning had limited uses in Business Intelligence, Data Analytics, and in particular within Data Science for Business contexts like working with Tabular data.

Generative AI is the opposite. Instead of trying to improve on Machine Learning, generative AI adds a superpower of automation.
Read 8 tweets
🔥 Matt Dancho (Business Science) 🔥 Profile picture
May 6
The concept that helped me go from bad models to good models: Bias and Variance. In 4 minutes, I'll share 4 years of experience in managing bias and variance in my machine learning models.

Let's go. 🧵 Image
1. Generalization:

Bias and variance control your models ability to generalize on new, unseen data, not just the data it was trained on. The goal in machine learning is to build models that generalize well. To do so, I manage bias and variance.
2. Low vs High Bias:

Models with low bias are usually complex and can capture the underlying patterns in data very well.

Models with high bias are overly simple and cannot capture the complexity in the data. They often underfit the training data.
Read 11 tweets
🔥 Matt Dancho (Business Science) 🔥 Profile picture
May 4
Principal Component Analysis (PCA) is the gold standard in dimensionality reduction with uses in business. In 5 minutes, I'll teach you what took me 5 weeks. Let's go! 🧵 Image
1. What is PCA?:

PCA is a statistical technique used in data analysis, mainly for dimensionality reduction.

It's beneficial when dealing with large datasets with many variables, and it helps simplify the data's complexity while retaining as much variability as possible.
2. How PCA Works:

PCA has 5 steps:

1. Standardization
2. Covariance Matrix Computation
3. Eigen Vector Calculation
4. Choosing Principal Components
5. Transforming the data.

Let's break them down.
Read 11 tweets
🔥 Matt Dancho (Business Science) 🔥 Profile picture
Nov 30, 2023
90% of data scientists overlook how to design A/B Testing experiments.

4 tips for better experiments: 🧵

#DataScience #ABTesting Image
Tip 1: Include a pre-test

Pretest data is unaffected data before the actual A/B test or Time-based Experiment.

Pre-test is a secret used by Booking(dot)com in their CUPED A/B Test method for reducing variance (and improving decision-making from A/B Test results).
Tip 2: Factor in time to effect

For online conversions, sales effects can take time. Your experiment should factor this impact.

A different technique, called Causal Impact can be more important especially if the conversion is a longer sale-cycle / process.
Read 6 tweets
🔥 Matt Dancho (Business Science) 🔥 Profile picture
Nov 27, 2023
Both Bayesian and Frequentist approaches to A/B testing have strengths (and weaknesses).

Here's a quick selection guide with 4 Pros/Cons. 🧵

#Bayesian #Frequentist #MachineLearning #ABTesting Image
💡 4 Reasons for the #Frequentist Approach for A/B testing

1. Fixed Sample Size: Requires pre-determination of sample size. Ideal when sample size cannot change once the test begins.
2. P-values and Confidence Intervals: Provides p-values to infer statistical significance and confidence intervals for parameter estimates.

3. Simplicity: Generally easier to explain and understand for those without a strong statistical background.
Read 8 tweets

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