Participants are able to **receive rewards passively, actively, or both** weekly by engaging in a variety of streams that helps the protocol grow. These activities include holding veOCEAN, curating datasets and building prediction models.
Each Data Farming weekly round has a pool of OCEAN rewards, where 50% of the pool is paid out in the form of passive rewards & 50% in the form of active rewards.
Volume DF rewards Data Farmers that allocate their veOCEAN tokens to Ocean ecosystem assets. It's called Volume DF because the amount of rewards relies on assets that are actively generating Data Consume Volume. Therefore, **Volume DF yields depend on the sales produced by these assets and allocations made.** No sales = no rewards, so choose your favorite datasets wisely & then allocate. Always DYOR.
Challenge DF rewards Data Scientists that produce prediction models that consistently improve the prediction of the price of Ethereum. It's called Challenge DF because weekly rewards are dispensed towards participants that are competing to improve the accuracy of how well we can predict price movements of Ethereum. Therefore, **Challenge DF yields depend on participants accurately outcompeting each other.** Only the top 3 predictions on the leaderboard win.
Active Rewards are governed and defined by the [Reward Function](df-max-out-yield.md#reward-schedule).
<figure><imgsrc="../.gitbook/assets/rewards/df-reward-streams.png"alt=""><figcaption><p>Rewards Page overview for each stream.</p></figcaption></figure>
### What's the difference between Data Farming and Yield Farming?
If you are familiar with 'liquidity mining' then you will find Data Farming similar, but instead, tuned for the curation of high quality assets in the Ocean ecosystem.
Unlike yield farming in DeFi, data farming has real intrinsic utility for Ocean Protocol stakeholders as Data Farmers determine which are the highest quality assets in the Ocean ecosystem to purchase, and as these assets sell, they are rewarded in OCEAN . It's this **curation of the "best" assets in the Ocean ecosystem** that shortens the search times for those looking to shop for assets in the Ocean ecosystem.
To deepen this incentive, Publishers are boosted further and **gain 2x the allocation power** when pointing to their own assets.
Data Farming strongly incentivizes publishing assets in the Ocean ecosystem by doubling the allocation power of Data Farmers that support their own published assets.
How is it calculated? _All the veOCEAN a Data Farmer has allocated to an asset they’ve published **is effectively doubled for the rewards calculation.**_
