where is the server; is the number
of local descriptors Star Student Project that come from and
are distributed into Subsequently, the cost of a given distribution
Star Student Project is the sum of the costs to distribute
each into its corresponding servers,Star Student Project which
is measured by their divergence to reveal its summarized overall
Star Student Project load imbalance. For each , we expect as
small as possible. Ideally, a uniform distribution has Star
Student Project which results in Note that we use Star Student
Project operator to punish the distribution that leads to a high
load imbalance, which hinders Star Student Project the
efficient search based on inverted
indexing files.