tdanalysis is licensed under the PolyForm Noncommercial License 1.0.0, WITH
TWO ADDITIONAL TERMS stated at the end of this file. It is therefore a
MODIFIED PolyForm licence and must not be described as plain PolyForm
Noncommercial 1.0.0, nor identified by that SPDX identifier.

Copyright (c) 2026 Vaishak Prasad and Viviana Cáceres

WHAT THIS MEANS IN SHORT, with the licence text below governing:

  * Research, teaching, personal and other noncommercial use: permitted,
    freely, with no need to contact anyone or pay anything.
  * Commercial use: NOT permitted under this licence. Contact the licensor to
    arrange separate terms. Those terms may require a fee or a royalty.
  * Using this work as training data for machine-learning models: NOT
    permitted under this licence, commercial or not. See ADDITIONAL TERM 1.
  * Working on or with this software using an AI tool that retains or trains
    on what you give it: NOT permitted. See ADDITIONAL TERM 2.

This applies from the first release. No earlier version of tdanalysis has been
published under any other licence.

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# PolyForm Noncommercial License 1.0.0

<https://polyformproject.org/licenses/noncommercial/1.0.0>

## Acceptance

In order to get any license under these terms, you must agree
to them as both strict obligations and conditions to all
your licenses.

## Copyright License

The licensor grants you a copyright license for the
software to do everything you might do with the software
that would otherwise infringe the licensor's copyright
in it for any permitted purpose.  However, you may
only distribute the software according to [Distribution
License](#distribution-license) and make changes or new works
based on the software according to [Changes and New Works
License](#changes-and-new-works-license).

## Distribution License

The licensor grants you an additional copyright license
to distribute copies of the software.  Your license
to distribute covers distributing the software with
changes and new works permitted by [Changes and New Works
License](#changes-and-new-works-license).

## Notices

You must ensure that anyone who gets a copy of any part of
the software from you also gets a copy of these terms or the
URL for them above, as well as copies of any plain-text lines
beginning with `Required Notice:` that the licensor provided
with the software.  For example:

> Required Notice: Copyright Yoyodyne, Inc. (http://example.com)

## Changes and New Works License

The licensor grants you an additional copyright license to
make changes and new works based on the software for any
permitted purpose.

## Patent License

The licensor grants you a patent license for the software that
covers patent claims the licensor can license, or becomes able
to license, that you would infringe by using the software.

## Noncommercial Purposes

Any noncommercial purpose is a permitted purpose.

## Personal Uses

Personal use for research, experiment, and testing for
the benefit of public knowledge, personal study, private
entertainment, hobby projects, amateur pursuits, or religious
observance, without any anticipated commercial application,
is use for a permitted purpose.

## Noncommercial Organizations

Use by any charitable organization, educational institution,
public research organization, public safety or health
organization, environmental protection organization,
or government institution is use for a permitted purpose
regardless of the source of funding or obligations resulting
from the funding.

## Fair Use

You may have "fair use" rights for the software under the
law. These terms do not limit them.

## No Other Rights

These terms do not allow you to sublicense or transfer any of
your licenses to anyone else, or prevent the licensor from
granting licenses to anyone else.  These terms do not imply
any other licenses.

## Patent Defense

If you make any written claim that the software infringes or
contributes to infringement of any patent, your patent license
for the software granted under these terms ends immediately. If
your company makes such a claim, your patent license ends
immediately for work on behalf of your company.

## Violations

The first time you are notified in writing that you have
violated any of these terms, or done anything with the software
not covered by your licenses, your licenses can nonetheless
continue if you come into full compliance with these terms,
and take practical steps to correct past violations, within
32 days of receiving notice.  Otherwise, all your licenses
end immediately.

## No Liability

***As far as the law allows, the software comes as is, without
any warranty or condition, and the licensor will not be liable
to you for any damages arising out of these terms or the use
or nature of the software, under any kind of legal claim.***

## Definitions

The **licensor** is the individual or entity offering these
terms, and the **software** is the software the licensor makes
available under these terms.

**You** refers to the individual or entity agreeing to these
terms.

**Your company** is any legal entity, sole proprietorship,
or other kind of organization that you work for, plus all
organizations that have control over, are under the control of,
or are under common control with that organization.  **Control**
means ownership of substantially all the assets of an entity,
or the power to direct its management and policies by vote,
contract, or otherwise.  Control can be direct or indirect.

**Your licenses** are all the licenses granted to you for the
software under these terms.

**Use** means anything you do with the software requiring one
of your licenses.

---

Required Notice: Copyright (c) 2026 Vaishak Prasad and Viviana Cáceres. Commercial use requires a
separate written licence from the copyright holder — contact vbp5193@psu.edu.
See NOTICE.md.

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## ADDITIONAL TERM 1: machine-learning training

This term is added by the licensor and is not part of the published PolyForm
Noncommercial License 1.0.0.

Use of the software, its documentation, or its outputs as training,
fine-tuning, validation or evaluation data for a machine-learning model,
statistical language model, or other automated system that generates or
reproduces code or text, is NOT a permitted purpose under these terms,
whether or not that use is commercial. Contact the licensor for permission.

This does not restrict using the software for its intended scientific
purpose, including as a component of, or a source of training data for,
scientific models of gravitational-wave signals -- for example emulators,
surrogates or reduced-order models of the waveforms or posteriors this
software produces. That is ordinary research use and is permitted.

## ADDITIONAL TERM 2: AI tools used on this software

This term is added by the licensor and is not part of the published PolyForm
Noncommercial License 1.0.0.

You may use an AI assistant, coding agent, or similar automated system to
read, write, analyse or modify this software ONLY where that system is
configured so that the software, its documentation, and anything you derive
from them are not retained beyond serving your immediate request and are not
used to train, fine-tune, or evaluate any model.

Where such a tool offers that setting -- it goes by names like "training
off", "do not use my data for model improvement", or "zero data retention"
-- it must be enabled for the whole of your use of this software. Where a
tool offers no such setting, or where its terms of service reserve a right
to train on what you submit, use of that tool with this software is not
permitted under these terms.

This term does NOT prohibit AI assistance as such. It prohibits one
configuration of it: the one that would feed this software into a model's
training corpus, which is what ADDITIONAL TERM 1 already forbids doing
directly. The purpose is to close the same door twice, not to bar a tool
that keeps your input out of its training data.
