Comments (2)
This would come in handy for Clustering.jl
, what do you think @KristofferC ? Currently cluster assigment is performed computing and storing all pairwise distances, which is quite bad in terms of memory (and it ends up beeing slower as well), it would be nice to use a BruteTree
to get cluster assigments. Something similar to
using NearestNeighbors
function get_cluster_assignments_nearest_neighbors(
X::Matrix{T},
centers::Matrix{T},
distance::SemiMetric=SqEuclidean(), # in: function to calculate distance with
) where {F<:Function,T}
brutetree = BruteTree(centers, distance)
idx, distances = knn(brutetree, X, 1)
return idx
end
I asked for this in this PR JuliaStats/Clustering.jl#238 but the idea was to leverage something like Distances.jl
or NearestNeighbors
and not implement this within the package.
from nearestneighbors.jl.
BruteTree
is more or less "useless" and is only there to basically check results vs the other trees. I think this is a bit out of scope of the package.
from nearestneighbors.jl.
Related Issues (20)
- README.md Misleading Custom Metric Documentation
- Document that `inrangecount` also counts the point itself HOT 2
- [Question] Can you insert new data into an existing KDTree object? HOT 2
- Compilation time issues with very high dimensions HOT 3
- Reverse Cuthill-McKee ordering option HOT 1
- Querying number of distance evaluations HOT 3
- Make datatypes of the KNN results selectable for potentially lower memory overhead
- Does ball tree work with any metric? HOT 2
- Add example with `skip` option to documentation HOT 1
- Julia 1.10 is waiting on IO to finish during compilation HOT 3
- It should be possible to make `KDNode` smaller
- KDTree: Wrong results for non-Euclidean metrics
- Cannot build KDTree with Subarrays since v0.4.14 HOT 3
- KDTree with Matrix{ComplexF64} HOT 1
- Can't do `knn` on `AbstractVector{SVector}` HOT 2
- Test benchmarks and have them run on CI
- 1.0 road map HOT 5
- `get_min_distance_sq` seems weird
- Interface for tree traversal / walking of BallTree/KDTree HOT 3
- Trees for integer input data errors now it seems
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from nearestneighbors.jl.