Q. Can you boost certain resource types to higher search result ranking in Primo VE, such as making books sort higher in the result ranking than eBooks?
You can boost by field, date, and resource type for local content. See Configuring the Ranking of Search Results in Primo VE.
Your changes to ranking should happen right away. Ex Libris recommends that you make changes incrementally because boosting can have a big impact on your search results, so you'll want to thoroughly test each change before making more adjustments.
In addition, during her April 2019 presentation, Lynn Higgins explained the following: "Boost records with a score: this value relates to the rank of each individual record and whether it should be included in the blending process. Setting this to High means that only if the record has a high ranking will be blended. We generally recommend that the Local Search Engine settings be defined at either Medium or Low, since these records generally have a lower ranking by definition (Primo Central should be set to High)."
You can boost your institutional holdings within a scope that includes the full NZ holdings:
The boost factor should be high. You can start with a very large number (100, 1000), you will see things starting to change and then can tune the number.
When testing boosting/ search changes: you should change the search after you modify the boost. You can use the same search term but change one letter from uppercase to lowercase (e.g. change Nature to nature) so the search will be re-calculated.
Ex Libris Resources: