Tabular Annotation Platform

Tabular Annotation Platform for Structured AI Training Data

Turn CSV records into reliable training data. Label text across fields, define relationships, and govern every record with shared ontologies and review.

Tabular annotation features

Everything You Need for Tabular Data Annotation

Classify records, annotate cell text and headers, connect fields, and review structured data without losing its original context.

CSV support record with customer, product, and issue fields beside a shared record-properties inspector.
01 · Records

Record-Level Annotation

Turn CSV rows into focused annotation tasks with their original fields intact. Add record-level classifications and properties while reviewing every field in context.

Record propertiesField contextCSV row tasks
Named entities highlighted within the text of a CSV record cell.
02 · Entities

Cell Text Annotation

Highlight entities inside any text field, from customer names to product details and issue descriptions. Each label retains its column and exact character span.

Column and header labels shown alongside the original values in a CSV record.
03 · Fields

Column & Header Labels

Add semantic labels to column names and selected header text within a record. Capture a field's role alongside the values and entities it contains.

Shared ontology for tabular entity classes, record properties, and field relationships.
04 · Structure

Advanced Ontologies

Standardize entity classes, record properties, and relationships with a shared ontology. Define required fields and structured choices for consistent tabular labels.

A product entity linked to an issue entity with a has_issue relationship across fields in one record.
05 · Context

Relationships Across Fields

Connect labeled entities across the fields of a record. Make relationships between people, products, organizations, and issues explicit in your training data.

Tabular annotation review with record labels, comments, and quality decisions.
06 · Quality

Review & Quality Control

Review records with their labels and properties in view. Use comments, consensus, and approved benchmarks to resolve disagreements before release.

Expert reviewTraceable decisions

Why AI Teams Choose Unitlab for Tabular Annotation

Keep structured records, detailed labels, and quality decisions connected from source CSV to a reviewed dataset release.

15X
Faster Tabular Annotation
60%
Free Up AI Engineers’ Time
5X
Lower AI Development Costs
Supported tabular annotation types

Label every layer of a structured record.

Classify each record, highlight entities in cell text, label column names, and connect information across fields with a reusable ontology.

01
Record context

Record Classification

Assign intent, priority, resolution, and other properties that describe the complete record.

02
Exact text spans

Cell Entity Labeling

Highlight entities inside any text field while preserving the column and character positions.

03
Field semantics

Column & Header Labeling

Label a column name or a span within its header in the current record.

04
Connected information

Entity Relationships

Connect labeled entities and headers across fields within the same record.

Tabular dataset curation & annotation workflows

Curate tabular data and govern annotation workflows.

Organize CSV assets, version datasets, inspect records, and move annotations through review and approval in one workspace.

Versioned CSV datasets with changes and reviewed releases.
Version

Dataset Versions

Create and manage dataset versions as tabular data evolves. Keep source records, annotation changes, and reviewed releases traceable for reproducible training.

CSV dataset search using query, metadata, tags, and filters.
Discover

Dataset Search

Find relevant CSV assets with search, metadata, tags, and filters. Build focused selections before assigning records for annotation or review.

CSV dataset inspection with sample rows and a detailed record preview.
Inspect

Dataset Inspection

Preview CSV fields and sample rows before annotation. Inspect the records and labels that need attention while preserving their source context.

Integrated CSV workflow connecting Dataset, Annotate, Review, and Complete stages.
Orchestrate

Integrated Workflows

Route records through annotation, review, rework, and completion. Keep assignments and quality decisions connected as each record moves through the process.

Reusable CSV source asset connected to tabular projects while preserving its original records.
Reuse

Reusable CSV Assets

Reuse a source CSV across projects and choose the interpretation each task needs. Preserve the source asset while managing project-specific labels and workflows.

Questions, answered

Tabular Annotation Platform FAQs

Answers about CSV records, cell and header labels, field relationships, shared ontologies, quality review, and structured annotation exports.

Talk with the Unitlab team

What is tabular data annotation?

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Tabular data annotation adds labels to structured records and the text inside their fields. Unitlab turns CSV rows into annotation tasks where teams can classify records, label entities, and connect information across fields.

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Which files can I use for tabular annotation?

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Unitlab supports CSV files in row mode. Each row becomes a separate annotation item, with its column names and values preserved for labeling and review.

Related documentation ↗

Can I annotate text in more than one column?

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Yes. Every text column is available for entity labeling. Each annotation retains its column and character offsets so the same text position in two fields stays unambiguous.

Related documentation ↗

Can I create relationships between fields?

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Yes. You can connect labeled entities, column labels, and header spans across fields within the same record using the relation definitions in your ontology.

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How do teams review tabular annotations?

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Records can move through annotation, review, rework, and completion stages. Reviewers inspect labels and properties in context, use comments to resolve issues, and apply consensus or approved benchmarks where configured.

Related documentation ↗

How is tabular annotation different from time-series annotation?

Tabular mode treats each CSV row as a separate record. Time-series mode treats a CSV as a chart with an X-axis and numeric channels. Project configuration lets you choose the interpretation for your task.

Related documentation ↗

How can I export annotated tabular data?

JSONL exports contain one line per record, including its row values, column schema, labeled entities, relationships, and supported record properties. Field identity and character spans stay attached to the annotations.

Related documentation ↗
TABULAR ANNOTATION PLATFORM

Build Reliable Tabular Training Data with Unitlab

Bring CSV records, field-level labels, relationships, and review into one governed workspace. Turn structured source data into consistent, traceable datasets for AI development.