DiversificationLevel

Controls whether highly similar jobs are returned next to each other in the search results. Jobs are identified as highly similar based on their titles, job categories, and locations. Highly similar results are clustered so that only one representative job of the cluster is displayed to the job seeker higher up in the results, with the other jobs being displayed lower down in the results.

If you are using pageToken to page through the result set, latency might be lower but we can't guarantee that all results are returned. If you are using page offset, latency might be higher but all results are returned.

Enums
DIVERSIFICATION_LEVEL_UNSPECIFIED The diversification level isn't specified.
DISABLED Disables diversification. Jobs that would normally be pushed to the last page would not have their positions altered. This may result in highly similar jobs appearing in sequence in the search results.
SIMPLE Default diversifying behavior. The result list is ordered so that highly similar results are pushed to the end of the last page of search results.
ONE_PER_COMPANY Only one job from the same company will be shown at once, other jobs under same company are pushed to the end of the last page of search result.
TWO_PER_COMPANY Similar to ONE_PER_COMPANY, but it allows at most two jobs in the same company to be shown at once, the other jobs under same company are pushed to the end of the last page of search result.
MAX_THREE_PER_COMPANY Similar to ONE_PER_COMPANY, but it allows at most three jobs in the same company to be shown at once, the other jobs under same company are dropped.
DIVERSIFY_BY_LOOSER_SIMILARITY The result list is ordered such that somewhat similar results are pushed to the end of the last page of the search results. This option is recommended if SIMPLE diversification does not diversify enough.