# AI training data glossary

URL: https://sellmydatatoai.net/glossary

- **[Agent trajectory](https://sellmydatatoai.net/glossary/agent-trajectory)**: An agent trajectory is the step-by-step record of an AI agent or person completing a task, including each observation, action, tool call and result.
- **[AI training data](https://sellmydatatoai.net/glossary/ai-training-data)**: AI training data is the text, code, images, audio, video or interaction records used to teach a machine learning model, adjust its behavior or test it.
- **[Anonymization](https://sellmydatatoai.net/glossary/anonymization)**: Anonymization is a process that removes the association between a dataset and the people it describes, so that no one can be identified from it.
- **[Chain of title](https://sellmydatatoai.net/glossary/chain-of-title)**: Chain of title is the unbroken record of ownership that shows how rights in a dataset passed from its creators to the party now licensing it.
- **[Data broker](https://sellmydatatoai.net/glossary/data-broker)**: A data broker is an intermediary that connects data owners with buyers. In AI training data, a broker values, vets and introduces rather than reselling.
- **[Data license](https://sellmydatatoai.net/glossary/data-license)**: A data license is a contract in which the owner of a dataset permits another party to use it for defined purposes while keeping ownership of it.
- **[Data manifest](https://sellmydatatoai.net/glossary/data-manifest)**: A data manifest is a structured inventory of a dataset that lists its sources, record counts, date ranges, formats and known exclusions.
- **[Data marketplace](https://sellmydatatoai.net/glossary/data-marketplace)**: A data marketplace is an online platform where sellers list datasets and buyers browse, sample and license them, often with the platform taking a commission.
- **[Data processing agreement](https://sellmydatatoai.net/glossary/data-processing-agreement)**: A data processing agreement is the contract that limits how a vendor may handle personal data on another company's behalf, such as a CCPA service provider contract.
- **[Data provenance](https://sellmydatatoai.net/glossary/data-provenance)**: Data provenance is the documented record of where a dataset came from, who created and owned it, and how it was collected, changed and transferred.
- **[Data room](https://sellmydatatoai.net/glossary/data-room)**: A data room is a secure online space where a seller shares documents and samples with vetted buyers during due diligence, with access controls and activity logs.
- **[Dataset card](https://sellmydatatoai.net/glossary/dataset-card)**: A dataset card is a short document published with a dataset that describes its contents, origin, intended uses, limitations and license.
- **[De-identification](https://sellmydatatoai.net/glossary/de-identification)**: De-identification is the process of removing or altering information that identifies people in a dataset, so records cannot readily be linked to individuals.
- **[Evaluation dataset](https://sellmydatatoai.net/glossary/evaluation-dataset)**: An evaluation dataset is a set of tasks with expected answers and scoring rules, used to measure how well a model performs rather than to train it.
- **[Exclusive license](https://sellmydatatoai.net/glossary/exclusive-license)**: An exclusive license gives one buyer sole rights to use a dataset for the licensed purpose, so the seller cannot license the same data to anyone else.
- **[Hold-out set](https://sellmydatatoai.net/glossary/hold-out-set)**: A hold-out set is a portion of data kept out of training so it can test how well a model performs on examples it has never seen.
- **[Indemnity](https://sellmydatatoai.net/glossary/indemnity)**: An indemnity is a contractual promise by one party to cover the other's losses if a named risk occurs, such as a third-party claim over licensed data.
- **[Lawful basis](https://sellmydatatoai.net/glossary/lawful-basis)**: A lawful basis is a legal ground under Article 6 of UK GDPR or EU GDPR that an organization needs before it can use personal data.
- **[Mutual NDA](https://sellmydatatoai.net/glossary/mutual-nda)**: A mutual NDA is a non-disclosure agreement in which both parties promise to keep each other's confidential information secret and use it only for an agreed purpose.
- **[Non-exclusive license](https://sellmydatatoai.net/glossary/non-exclusive-license)**: A non-exclusive license lets a buyer use a dataset while the seller stays free to license the same data to other buyers on separate terms.
- **[Perpetual license](https://sellmydatatoai.net/glossary/perpetual-license)**: A perpetual license grants rights to use a dataset with no end date, so the buyer keeps those rights after any payment period finishes.
- **[Personal data](https://sellmydatatoai.net/glossary/personal-data)**: Personal data, called personal information in most US laws, is information that identifies, relates to or could reasonably be linked to a particular person or household.
- **[Preference data](https://sellmydatatoai.net/glossary/preference-data)**: Preference data records which of two or more model outputs a person judged better for a given prompt, and is used to train reward models or tune models directly.
- **[Pseudonymization](https://sellmydatatoai.net/glossary/pseudonymization)**: Pseudonymization is processing personal data so it can no longer be linked to a specific person without additional information that is kept separately and secured.
- **[Re-identification risk](https://sellmydatatoai.net/glossary/re-identification-risk)**: Re-identification risk is the likelihood that people in a de-identified or anonymized dataset could be identified again, alone or by combining it with other information.
- **[Representative sample](https://sellmydatatoai.net/glossary/representative-sample)**: A representative sample is a subset of a dataset drawn so its mix of record types, dates and quality reflects the whole archive, not hand-picked highlights.
- **[Revenue share](https://sellmydatatoai.net/glossary/revenue-share)**: A revenue share pays the data owner an agreed percentage of the income a dataset earns, instead of or alongside a fixed upfront fee.
- **[RL environment](https://sellmydatatoai.net/glossary/rl-environment)**: An RL environment is a software setting in which an AI agent takes actions, receives observations and gets a reward, so it can be trained or tested by trial.
- **[RLHF](https://sellmydatatoai.net/glossary/rlhf)**: RLHF (reinforcement learning from human feedback) trains a model on human judgments of its outputs, usually through a reward model learned from preference comparisons.
- **[Success fee](https://sellmydatatoai.net/glossary/success-fee)**: A success fee is a charge a broker or adviser earns only when a deal completes, usually set as a percentage of the deal value.
- **[Supervised fine-tuning](https://sellmydatatoai.net/glossary/supervised-fine-tuning)**: Supervised fine-tuning is further training of a pre-trained model on example inputs paired with target outputs, so it learns to produce the desired responses.
- **[Synthetic data](https://sellmydatatoai.net/glossary/synthetic-data)**: Synthetic data is artificially generated data, produced by models, simulations or rules, that imitates the patterns of real data without being recorded from real events.