NAVIGATION

What is Dataset?

Definition

Dataset

A Dataset is a structured collection of data points, features, and target values used to train, validate, and evaluate machine learning models.

Why It Matters for AI Builders

Helps AI builders design and scale robust architectures; mastering the implementation of Dataset improves latency, accuracy, and operational efficiency for model training pipelines, data cleaning, and benchmarking algorithms.

Detailed Deep Dive

A dataset is a structured collection of data points, observations, or records used to train, validate, and test machine learning models. Datasets are typically split into three subsets: a training set (used to adjust model parameters), a validation set (used to tune hyperparameters and prevent overfitting), and a test set (used to evaluate final generalization performance). The quality, diversity, and size of the dataset are critical determinants of a model's capabilities.

Advertisement

Frequently Asked Questions

Q:What are the three splits of a dataset in machine learning?

The training split (used to optimize weights), the validation split (used to select hyperparameters), and the test split (used to perform final accuracy checks).

Q:What is the difference between structured and unstructured datasets?

Structured datasets are organized in tabular grids (like CSV files or database tables). Unstructured datasets contain raw media like text files, audio clips, or image directories, which require preprocessing.

Quick Facts

  • CategoryFoundational AI
  • Key ApplicationModel training pipelines, data cleaning, and benchmarking algorithms.

Coverage Trend12 Weeks

12w agoToday

Cite This Term

Reference this definition in your articles, research, or documentation to credit this source:

[Dataset | SPIDITS Glossary](https://spidits.com/ai-glossary/dataset)

Dataset Media Coverage & Intelligence

RESEARCHJul 7, 2026

Enrich Your Datasets with Business Context: Migrating From Legacy Topics to Semantic Datasets in Amazon Quick

In this post, we walk through what Dataset Enrichment is, how it differs from legacy Topics, and provide three migration scenarios with step-by-step guidance.

RESEARCHJul 7, 2026

Data Modeling Best Practices for Amazon Quick Sight Multi-dataset Relationships

Today, we are excited to announce Multi-Dataset Relationships in Amazon Quick Sight.

AWS ML BlogJul 7, 2026

Data modeling patterns for Amazon Quick Sight multi-dataset relationships

In this post, we shift from concepts to patterns. For each schema, you'll find a table structure, use cases, implementation steps, and sample SQL queries. We...

RESEARCHJul 7, 2026

Multi-dataset Topic Best Practices for Amazon Quick Chat

This post is for data architects, business intelligence (BI) engineers, and analytics engineers building or optimizing Quick Sight Topics for.

AWS ML BlogJul 7, 2026

Build a unified semantic layer across datasets with multi-dataset Topics in Amazon Quick

In this post, we walk through how multi-dataset Topics work, explain how the chat agent uses defined relationships to generate cross-dataset queries, and...

GitHub BlogJun 15, 2026

Accelerating researchers and developers building multilingual AI with a new open dataset

A new repository-level dataset, published on GitHub under CC0-1.0, helps researchers and developers discover multilingual developer content across READMEs...

arXiv AIJun 6, 2026

How Far Did They Go? The Persuasive Tactics of Covert LLM Agents in a Discontinued Field Experiment

This study analyzes a publicly released dataset from a discontinued field experiment on Reddit's r/ChangeMyView.