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Dataset Card: swiss_companies_dataset

Dataset Description

The swiss_companies_dataset is a compilation of registered business entities in Switzerland, derived from public data published by the Central Business Name Index (ZEFIX).

This dataset extends the official ZEFIX data with enhanced, analytical features.
These added fields include normalized scoring metrics (e.g., address density score, lifespan score, takeover indicator, purpose clarity score, audit cluster score) and an aggregated anomaly score.
The dataset is suitable for research in corporate structures, business analysis and entity-profiling applications within the Swiss market.

Data Structure

The total number of entries depends on the extraction date (27-11-2025) and includes both active and deleted entities.

Fields

Field Name	Data Type	Description
ch_id	String	Unique Swiss ID (CH-ID) of the company.
ch_id_formatted	String	Formatted version of the CH-ID.
uid	String	Official Unique Identification Number (UID, UID-EHRA).
uid_formatted	String	Formatted version of the UID.
ehra_id	Integer	Internal EHRA registry identifier.
rab_id	Integer	Internal RAB registry identifier.
name	String	Official registered company name.
translated_name	String	Translated or alternate name (if available).
old_names	Array of Strings	Previous registered names.
address	String	Full registered address of the legal seat.
address_str	String	Concatenated string representation of the address.
legal_seat	String	Municipality of the legal seat.
legal_seat_id	Integer	Internal ID for the legal seat municipality.
register_office_id	Integer	ID of the Cantonal Commercial Registry Office.
cantonal_excerpt_web	String	Link to the official cantonal register/excerpt.
legal_form_id	Integer	Numeric identifier for the legal form (AG, GmbH, SA, etc.).
purpose	String	Registered business purpose description.
purpose_length	Integer	Length of the purpose text in characters.
purpose_len	Integer	Alias for purpose_length.
generic_purpose_flag	Boolean	Indicates whether the purpose text is generic.
main_offices	Array of Strings	Registered main offices/domiciles.
further_main_offices	Array of Strings	Additional offices listed in the registry.
branch_offices	Array of Strings	Registered branch offices.
audit_firms	Array of Maps	List of registered audit firms/revisors.
audit_firms_str	String	String representation of audit firms.
status	String	Company status (Active, Deleted, In Liquidation, etc.).
registration_date	Date/Timestamp	Date of first registry entry.
existence_date	Date/Timestamp	Recognized legal existence date.
delete_date	Date/Timestamp	Official deletion date (if applicable).
deleted_flag	Boolean	Whether the company is deleted.
registration_info	String	Textual history of registry updates or special notes.
has_taken_over	Array of Strings	CH-IDs of companies taken over by this entity.
was_taken_over_by	String	CH-ID of the successor entity (if applicable).
takeover_flag	Boolean	Indicates involvement in a takeover event.

Derived Analytical Metrics

Field Name	Data Type	Description
address_company_count	Integer	Number of companies registered at the same address.
address_density_score	Float	Normalized measure of address concentration.
active_lifespan_months	Float	Months between registration and deletion/current date.
active_lifespan_score	Float	Normalized lifespan indicator (lower = younger/shorter-lived).
takeover_indicator	Float	Indicator of participation in takeover chains.
purpose_clarity_score	Float	Score reflecting the specificity vs. generic nature of the purpose.
audit_company_count	Integer	Number of companies sharing the same audit firm(s).
audit_cluster_score	Float	Normalized indicator of auditor clustering.
anomaly_score	Float	Aggregated normalized profile score combining all metrics.

Data Source

ZEFIX – Central Business Name Index / Zentraler Firmenindex
Operated by the Office fédéral du registre du commerce (OFRC) / Federal Office of the Commercial Registry.
ZEFIX aggregates the official commercial register data from all cantonal registries in Switzerland. https://www.zefix.admin.ch/

Licensing and Mandatory Attribution

The swiss_companies_dataset is released under a CC-by-4.0 License.

Combined BibTeX Example

@misc{swiss_companies_dataset_2025,
title        = {Swiss Companies Dataset},
authors      = {ZEFIX Admins, Eric Saikali},
year         = {2025},
urls          = {https://www.zefix.admin.ch, https://huggingface.co/datasets/ESmike/swiss_companies_dataset}
}

Disclaimer

All analytical metrics (e.g., address_density_score, lifespan_score, anomaly_score) are computed heuristics created for informational and research purposes only.
They:

do not represent legal, financial, or regulatory assessments,
do not imply misconduct, fraud, or risk,
and should not be treated as authoritative evaluations of any entity.

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