Add Navigating Spreading-Out Graph (NSG) #611
Open
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
NSG [1] is one of the state-of-the-art algorithms according to recent surveys [2] but still missing in the benchmark.
Add NSG along with a very rudimentary configuration (based on what the authors said they used for gist and sift datasets) because NSG takes a bit longer to build compared to other indices. The NSG module uses Python bindings called pynsg that are a wrapper around the reference implementation [3].
Fix issue #112
[1] https://arxiv.org/pdf/1707.00143
[2] https://dl.acm.org/doi/abs/10.1145/3709693
[3] https://github.com/ZJULearning/nsg