Data Science Portfolio - Kaggle Datasets & AI Projects | Artificial Intelligence
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Free Datasets For Data Science Projects & Portfolio

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๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ ๐—™๐—ฅ๐—˜๐—˜ ๐—”๐—œ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€๐Ÿ˜

Ever wondered how machines describe images in words?๐Ÿ’ป

Want to get hands-on with cutting-edge AI and computer vision โ€” for FREE?๐ŸŽŠ

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๐ŸŽฏ Start Learning AI for FREE
๐Ÿ‘2
Libraries for Data Science in Python
โค5
Forwarded from Generative AI
๐Ÿณ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—ข๐—ป๐—น๐—ถ๐—ป๐—ฒ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐˜๐—ผ ๐—จ๐—ฝ๐—ด๐—ฟ๐—ฎ๐—ฑ๐—ฒ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—ฅ๐—ฒ๐˜€๐˜‚๐—บ๐—ฒ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

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๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

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The best part? You donโ€™t need to spend any money to do it๐Ÿ’ฐ๐Ÿ“Œ
๐Ÿ‘3โค1
๐—›๐—ผ๐˜„ ๐˜๐—ผ ๐—•๐—ฒ๐—ฐ๐—ผ๐—บ๐—ฒ ๐—ฎ ๐—๐—ผ๐—ฏ-๐—ฅ๐—ฒ๐—ฎ๐—ฑ๐˜† ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐˜๐—ถ๐˜€๐˜ ๐—ณ๐—ฟ๐—ผ๐—บ ๐—ฆ๐—ฐ๐—ฟ๐—ฎ๐˜๐—ฐ๐—ต (๐—˜๐˜ƒ๐—ฒ๐—ป ๐—ถ๐—ณ ๐—ฌ๐—ผ๐˜‚โ€™๐—ฟ๐—ฒ ๐—ฎ ๐—•๐—ฒ๐—ด๐—ถ๐—ป๐—ป๐—ฒ๐—ฟ!) ๐Ÿ“Š

Wanna break into data science but feel overwhelmed by too many courses, buzzwords, and conflicting advice? Youโ€™re not alone.

Hereโ€™s the truth: You donโ€™t need a PhD or 10 certifications. You just need the right skills in the right order.

Let me show you a proven 5-step roadmap that actually works for landing data science roles (even entry-level) ๐Ÿ‘‡

๐Ÿ”น Step 1: Learn the Core Tools (This is Your Foundation)

Focus on 3 key tools firstโ€”donโ€™t overcomplicate:

โœ… Python โ€“ NumPy, Pandas, Matplotlib, Seaborn
โœ… SQL โ€“ Joins, Aggregations, Window Functions
โœ… Excel โ€“ VLOOKUP, Pivot Tables, Data Cleaning

๐Ÿ”น Step 2: Master Data Cleaning & EDA (Your Real-World Skill)

Real data is messy. Learn how to:

โœ… Handle missing data, outliers, and duplicates
โœ… Visualize trends using Matplotlib/Seaborn
โœ… Use groupby(), merge(), and pivot_table()

๐Ÿ”น Step 3: Learn ML Basics (No Fancy Math Needed)

Stick to core algorithms first:

โœ… Linear & Logistic Regression
โœ… Decision Trees & Random Forest
โœ… KMeans Clustering + Model Evaluation Metrics

๐Ÿ”น Step 4: Build Projects That Prove Your Skills

One strong project > 5 courses. Create:

โœ… Sales Forecasting using Time Series
โœ… Movie Recommendation System
โœ… HR Analytics Dashboard using Python + Excel
๐Ÿ“ Upload them on GitHub. Add visuals, write a good README, and share on LinkedIn.

๐Ÿ”น Step 5: Prep for the Job Hunt (Your Personal Brand Matters)

โœ… Create a strong LinkedIn profile with keywords like โ€œAspiring Data Scientist | Python | SQL | MLโ€
โœ… Add GitHub link + Highlight your Projects
โœ… Follow Data Science mentors, engage with content, and network for referrals

๐ŸŽฏ No shortcuts. Just consistent baby steps.

Every pro data scientist once started as a beginner. Stay curious, stay consistent.

Free Data Science Resources: https://whatsapp.com/channel/0029VauCKUI6WaKrgTHrRD0i

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
๐Ÿ‘6๐Ÿ”ฅ2
๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€๐Ÿ˜

Whether youโ€™re a student, fresher, or professional looking to upskill โ€” Microsoft has dropped a series of completely free courses to get you started.

Learn SQL ,Power BI & More In 2025 

๐—Ÿ๐—ถ๐—ป๐—ธ:-๐Ÿ‘‡

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Enroll For FREE & Get Certified ๐ŸŽ“
๐Ÿ‘1
Essential Topics to Master Data Science Interviews: ๐Ÿš€

SQL:
1. Foundations
- Craft SELECT statements with WHERE, ORDER BY, GROUP BY, HAVING
- Embrace Basic JOINS (INNER, LEFT, RIGHT, FULL)
- Navigate through simple databases and tables

2. Intermediate SQL
- Utilize Aggregate functions (COUNT, SUM, AVG, MAX, MIN)
- Embrace Subqueries and nested queries
- Master Common Table Expressions (WITH clause)
- Implement CASE statements for logical queries

3. Advanced SQL
- Explore Advanced JOIN techniques (self-join, non-equi join)
- Dive into Window functions (OVER, PARTITION BY, ROW_NUMBER, RANK, DENSE_RANK, lead, lag)
- Optimize queries with indexing
- Execute Data manipulation (INSERT, UPDATE, DELETE)

Python:
1. Python Basics
- Grasp Syntax, variables, and data types
- Command Control structures (if-else, for and while loops)
- Understand Basic data structures (lists, dictionaries, sets, tuples)
- Master Functions, lambda functions, and error handling (try-except)
- Explore Modules and packages

2. Pandas & Numpy
- Create and manipulate DataFrames and Series
- Perfect Indexing, selecting, and filtering data
- Handle missing data (fillna, dropna)
- Aggregate data with groupby, summarizing data
- Merge, join, and concatenate datasets

3. Data Visualization with Python
- Plot with Matplotlib (line plots, bar plots, histograms)
- Visualize with Seaborn (scatter plots, box plots, pair plots)
- Customize plots (sizes, labels, legends, color palettes)
- Introduction to interactive visualizations (e.g., Plotly)

Excel:
1. Excel Essentials
- Conduct Cell operations, basic formulas (SUMIFS, COUNTIFS, AVERAGEIFS, IF, AND, OR, NOT & Nested Functions etc.)
- Dive into charts and basic data visualization
- Sort and filter data, use Conditional formatting

2. Intermediate Excel
- Master Advanced formulas (V/XLOOKUP, INDEX-MATCH, nested IF)
- Leverage PivotTables and PivotCharts for summarizing data
- Utilize data validation tools
- Employ What-if analysis tools (Data Tables, Goal Seek)

3. Advanced Excel
- Harness Array formulas and advanced functions
- Dive into Data Model & Power Pivot
- Explore Advanced Filter, Slicers, and Timelines in Pivot Tables
- Create dynamic charts and interactive dashboards

Power BI:
1. Data Modeling in Power BI
- Import data from various sources
- Establish and manage relationships between datasets
- Grasp Data modeling basics (star schema, snowflake schema)

2. Data Transformation in Power BI
- Use Power Query for data cleaning and transformation
- Apply advanced data shaping techniques
- Create Calculated columns and measures using DAX

3. Data Visualization and Reporting in Power BI
- Craft interactive reports and dashboards
- Utilize Visualizations (bar, line, pie charts, maps)
- Publish and share reports, schedule data refreshes

Statistics Fundamentals:
- Mean, Median, Mode
- Standard Deviation, Variance
- Probability Distributions, Hypothesis Testing
- P-values, Confidence Intervals
- Correlation, Simple Linear Regression
- Normal Distribution, Binomial Distribution, Poisson Distribution.

Show some โค๏ธ if you're ready to elevate your data science journey! ๐Ÿ“Š

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
โค2๐Ÿ‘2
๐Ÿฒ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—”๐—œ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐—ง๐—ผ ๐—จ๐—ฝ๐˜€๐—ธ๐—ถ๐—น๐—น ๐—œ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

Whether youโ€™re a student, aspiring data analyst, software enthusiast, or just curious about AI, nowโ€™s the perfect time to dive in.

These 6 beginner-friendly and completely free AI courses from top institutions like Google, IBM, Harvard, and more

๐—Ÿ๐—ถ๐—ป๐—ธ:-๐Ÿ‘‡

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Enroll for FREE & Get Certified ๐ŸŽ“
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Time Complexity of Most Popular ML Algorithms
.
.
When selecting a machine learning model, understanding its time complexity is crucial for efficient processing, especially with large datasets.

For instance,
1๏ธโƒฃ Linear Regression (OLS) is computationally expensive due to matrix multiplication, making it less suitable for big data applications.

2๏ธโƒฃ Logistic Regression with Stochastic Gradient Descent (SGD) offers faster training times by updating parameters iteratively.

3๏ธโƒฃ Decision Trees and Random Forests are efficient for training but can be slower for prediction due to traversing the tree structure.

4๏ธโƒฃ K-Nearest Neighbours is simple but can become slow with large datasets due to distance calculations.

5๏ธโƒฃ Naive Bayes is fast and scalable, making it suitable for large datasets with high-dimensional features.
โค3
Forwarded from Artificial Intelligence
๐—Ÿ๐—ผ๐—ผ๐—ธ๐—ถ๐—ป๐—ด ๐˜๐—ผ ๐˜€๐˜๐—ฎ๐—ฟ๐˜ ๐˜†๐—ผ๐˜‚๐—ฟ ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—ฎ๐—ป๐—ฑ ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ๐—ท๐—ผ๐˜‚๐—ฟ๐—ป๐—ฒ๐˜† ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ?๐Ÿ˜

๐Ÿ“Š These free courses are designed for learners at all levels, whether youโ€™re a beginner or an advanced professional๐Ÿ“Œ

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/41Y1WQm

Donโ€™t Wait! Start your Learning Journey Todayโœ…๏ธ
โค4๐Ÿ‘1
Many people pay too much to learn Data Science, but my mission is to break down barriers. I have shared complete learning series to learn Data Science algorithms from scratch.

Here are the links to the Data Science series ๐Ÿ‘‡๐Ÿ‘‡

Complete Data Science Algorithms: https://t.iss.one/datasciencefun/1708

Part-1: https://t.iss.one/datasciencefun/1710

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Part-12:
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Part-13: https://t.iss.one/datasciencefun/1739

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Part-15: https://t.iss.one/datasciencefun/1748

Part-16: https://t.iss.one/datasciencefun/1750

Part-17: https://t.iss.one/datasciencefun/1753

Part-18: https://t.iss.one/datasciencefun/1754

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Part-21: https://t.iss.one/datasciencefun/1768

I saw a lot of big influencers copy pasting my content after removing the credits. It's absolutely fine for me as more people are getting free education because of my content.

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Hope it helps :)
๐Ÿ‘7
๐——๐—ฒ๐—น๐—ผ๐—ถ๐˜๐˜๐—ฒ ๐—ฉ๐—ถ๐—ฟ๐˜๐˜‚๐—ฎ๐—น ๐—™๐—ฅ๐—˜๐—˜ ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐Ÿ˜

If youโ€™re eager to build real skills in data analytics before landing your first role, Deloitte is giving you a golden opportunityโ€”completely free!

๐Ÿ’ก No prior experience required
๐Ÿ“š Ideal for students, freshers, and aspiring data analysts
โฐ Self-paced โ€” complete at your convenience

๐Ÿ”— ๐—”๐—ฝ๐—ฝ๐—น๐˜† ๐—›๐—ฒ๐—ฟ๐—ฒ (๐—™๐—ฟ๐—ฒ๐—ฒ)๐Ÿ‘‡:- 

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Enroll for FREE & Get Certified ๐ŸŽ“
Data Science Roadmap โ€“ Step-by-Step Guide ๐Ÿš€

1๏ธโƒฃ Programming & Data Manipulation

Python (Pandas, NumPy, Matplotlib, Seaborn)

SQL (Joins, CTEs, Window Functions, Aggregations)

Data Wrangling & Cleaning (handling missing data, duplicates, normalization)


2๏ธโƒฃ Statistics & Mathematics

Descriptive Statistics (Mean, Median, Mode, Variance, Standard Deviation)

Probability Theory (Bayes' Theorem, Conditional Probability)

Hypothesis Testing (T-test, ANOVA, Chi-square test)

Linear Algebra & Calculus (Matrix operations, Differentiation)


3๏ธโƒฃ Data Visualization

Matplotlib & Seaborn for static visualizations

Power BI & Tableau for interactive dashboards

ggplot (R) for advanced visualizations


4๏ธโƒฃ Machine Learning Fundamentals

Supervised Learning (Linear Regression, Logistic Regression, Decision Trees)

Unsupervised Learning (Clustering, PCA, Anomaly Detection)

Model Evaluation (Confusion Matrix, Precision, Recall, F1-Score, AUC-ROC)


5๏ธโƒฃ Advanced Machine Learning

Ensemble Methods (Random Forest, Gradient Boosting, XGBoost)

Hyperparameter Tuning (GridSearchCV, RandomizedSearchCV)

Deep Learning Basics (Neural Networks, TensorFlow, PyTorch)


6๏ธโƒฃ Big Data & Cloud Computing

Distributed Computing (Hadoop, Spark)

Cloud Platforms (AWS, GCP, Azure)

Data Engineering Basics (ETL Pipelines, Apache Kafka, Airflow)


7๏ธโƒฃ Natural Language Processing (NLP)

Text Preprocessing (Tokenization, Lemmatization, Stopword Removal)

Sentiment Analysis, Named Entity Recognition

Transformers & Large Language Models (BERT, GPT)


8๏ธโƒฃ Deployment & Model Optimization

Flask & FastAPI for model deployment

Model monitoring & retraining

MLOps (CI/CD for Machine Learning)


9๏ธโƒฃ Business Applications & Case Studies

A/B Testing & Experimentation

Customer Segmentation & Churn Prediction

Time Series Forecasting (ARIMA, LSTM)


๐Ÿ”Ÿ Soft Skills & Career Growth

Data Storytelling & Communication

Resume & Portfolio Building (Kaggle Projects, GitHub Repos)

Networking & Job Applications (LinkedIn, Referrals)

Free Data Science Resources: https://whatsapp.com/channel/0029Va8v3eo1NCrQfGMseL2D

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
๐Ÿ‘4
Forwarded from Artificial Intelligence
๐Ÿฒ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐˜๐—ผ ๐— ๐—ฎ๐—ธ๐—ฒ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—ฅ๐—ฒ๐˜€๐˜‚๐—บ๐—ฒ ๐—ฆ๐˜๐—ฎ๐—ป๐—ฑ ๐—ข๐˜‚๐˜ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

As competition heats up across every industry, standing out to recruiters is more important than ever๐Ÿ“„๐Ÿ“Œ

The best part? You donโ€™t need to spend a rupee to do it!๐Ÿ’ฐ

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

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๐Ÿ‘‰ Start learning. Start standing outโœ…๏ธ
Difference between linear regression and logistic regression ๐Ÿ‘‡๐Ÿ‘‡

Linear regression and logistic regression are both types of statistical models used for prediction and modeling, but they have different purposes and applications.

Linear regression is used to model the relationship between a dependent variable and one or more independent variables. It is used when the dependent variable is continuous and can take any value within a range. The goal of linear regression is to find the best-fitting line that describes the relationship between the independent and dependent variables.

Logistic regression, on the other hand, is used when the dependent variable is binary or categorical. It is used to model the probability of a certain event occurring based on one or more independent variables. The output of logistic regression is a probability value between 0 and 1, which can be interpreted as the likelihood of the event happening.

Data Science Interview Resources
๐Ÿ‘‡๐Ÿ‘‡
https://topmate.io/coding/914624

Like for more ๐Ÿ˜„
๐Ÿ‘3
Understanding Bias and Variance in Machine Learning

Bias refers to the error in the model when the model is not able to capture the pattern in the data and what results is an underfit model (High Bias).

Variance refers to the error in the model, when the model is too much tailored to the training data and fails to generalise for unseen data which refers to an overfit model (High Variance)

There should be a tradeoff between bias and variance. An optimal model should have Low Bias and Low Variance so as to avoid underfitting and overfitting.

Techniques like cross validation can be helpful in these cases.

โž–โž–โž–โž–โž–โž–โž–โž–โž–โž–โž–โž–โž–โž–
Kaggle Datasets are often too perfect for real-world scenarios.

I'm about to share a method for real-life data analysis.

You see โ€ฆ

โ€ฆ most of the time, a data analyst cleans and transforms data.

So โ€ฆ letโ€™s practice that.

How?

Well โ€ฆ you can use ChatGPT.

Just write this prompt:

Create a downloadable CSV dataset of 10,000 rows of financial credit card transactions with 10 columns of customer data so I can perform some data analysis to segment customers.

Nowโ€ฆ

Download the dataset and start your analysis.

You'll see that, most of the timeโ€ฆ

โ€ฆ numbers donโ€™t match.

There are no patterns.

Data is incorrect and doesnโ€™t make sense.

And thatโ€™s good.

Now you know what a data analyst deals with.

Your job is to make sense of that dataset.

To create a story that justifies the numbers.

This is how you can mimic real-life work using A.I.
๐Ÿ‘5
๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€๐Ÿ˜

Whether youโ€™re a student, fresher, or professional looking to upskill โ€” Microsoft has dropped a series of completely free courses to get you started.

Learn SQL ,Power BI & More In 2025 

๐—Ÿ๐—ถ๐—ป๐—ธ:-๐Ÿ‘‡

https://pdlink.in/42FxnyM

Enroll For FREE & Get Certified ๐ŸŽ“
๐Ÿ‘1
A-Z of essential data science concepts

A: Algorithm - A set of rules or instructions for solving a problem or completing a task.
B: Big Data - Large and complex datasets that traditional data processing applications are unable to handle efficiently.
C: Classification - A type of machine learning task that involves assigning labels to instances based on their characteristics.
D: Data Mining - The process of discovering patterns and extracting useful information from large datasets.
E: Ensemble Learning - A machine learning technique that combines multiple models to improve predictive performance.
F: Feature Engineering - The process of selecting, extracting, and transforming features from raw data to improve model performance.
G: Gradient Descent - An optimization algorithm used to minimize the error of a model by adjusting its parameters iteratively.
H: Hypothesis Testing - A statistical method used to make inferences about a population based on sample data.
I: Imputation - The process of replacing missing values in a dataset with estimated values.
J: Joint Probability - The probability of the intersection of two or more events occurring simultaneously.
K: K-Means Clustering - A popular unsupervised machine learning algorithm used for clustering data points into groups.
L: Logistic Regression - A statistical model used for binary classification tasks.
M: Machine Learning - A subset of artificial intelligence that enables systems to learn from data and improve performance over time.
N: Neural Network - A computer system inspired by the structure of the human brain, used for various machine learning tasks.
O: Outlier Detection - The process of identifying observations in a dataset that significantly deviate from the rest of the data points.
P: Precision and Recall - Evaluation metrics used to assess the performance of classification models.
Q: Quantitative Analysis - The process of using mathematical and statistical methods to analyze and interpret data.
R: Regression Analysis - A statistical technique used to model the relationship between a dependent variable and one or more independent variables.
S: Support Vector Machine - A supervised machine learning algorithm used for classification and regression tasks.
T: Time Series Analysis - The study of data collected over time to detect patterns, trends, and seasonal variations.
U: Unsupervised Learning - Machine learning techniques used to identify patterns and relationships in data without labeled outcomes.
V: Validation - The process of assessing the performance and generalization of a machine learning model using independent datasets.
W: Weka - A popular open-source software tool used for data mining and machine learning tasks.
X: XGBoost - An optimized implementation of gradient boosting that is widely used for classification and regression tasks.
Y: Yarn - A resource manager used in Apache Hadoop for managing resources across distributed clusters.
Z: Zero-Inflated Model - A statistical model used to analyze data with excess zeros, commonly found in count data.

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https://aws.amazon.com/datasets/google-books-ngrams/

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https://code.google.com/archive/p/wiki-links/downloads

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https://hci.iwr.uni-heidelberg.de/node/6132

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