kalmar/Groups.jl
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generalize signatures of wlmetric_ball

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This commit is contained in:
Marek Kaluba 2021-05-09 19:37:26 +02:00
parent 217be597c3
commit 472e78af27
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1 changed files with 12 additions and 29 deletions
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41
src/Groups.jl
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@ -71,14 +71,11 @@ word-length metric on the group generated by `S`. The ball is centered at `cente
(by default: the identity element). `radius` and `op` keywords specify the
radius and multiplication operation to be used.
"""
function wlmetric_ball_serial(
S::AbstractVector{T};
radius = 2,
op = *,
) where {T<:Union{GroupElement,AbstractAlgebra.NCRingElem}}
function wlmetric_ball_serial(S::AbstractVector{T}; radius = 2, op = *) where {T}
@assert radius > 0
old = unique!([one(first(S)), S...])
sizes = [1, length(old)]
for i = 2:radius
for i in 2:radius
new = collect(op(o, s) for o in @view(old[sizes[end-1]:end]) for s in S)
append!(old, new)
resize!(new, 0)
@ -88,18 +85,14 @@ function wlmetric_ball_serial(
return old, sizes[2:end]
end
function wlmetric_ball_thr(
S::AbstractVector{T};
radius = 2,
op = *,
) where {T<:Union{GroupElement,AbstractAlgebra.NCRingElem}}
function wlmetric_ball_thr(S::AbstractVector{T}; radius = 2, op = *) where {T}
@assert radius > 0
old = unique!([one(first(S)), S...])
sizes = [1, length(old)]
for r = 2:radius
for r in 2:radius
begin
new = ThreadsX.collect(
op(o, s) for o in @view(old[sizes[end-1]:end]) for s in S
)
new =
ThreadsX.collect(op(o, s) for o in @view(old[sizes[end-1]:end]) for s in S)
ThreadsX.foreach(hash, new)
end
append!(old, new)
@ -110,23 +103,13 @@ function wlmetric_ball_thr(
return old, sizes[2:end]
end
function wlmetric_ball_serial(
S::AbstractVector{T},
center::T;
radius = 2,
op = *,
) where {T<:Union{GroupElement,AbstractAlgebra.NCRingElem}}
function wlmetric_ball_serial(S::AbstractVector{T}, center::T; radius = 2, op = *) where {T}
E, sizes = wlmetric_ball_serial(S, radius = radius, op = op)
isone(center) && return E, sizes
return c .* E, sizes
end
function wlmetric_ball_thr(
S::AbstractVector{T},
center::T;
radius = 2,
op = *,
) where {T<:Union{GroupElement,AbstractAlgebra.NCRingElem}}
function wlmetric_ball_thr(S::AbstractVector{T}, center::T; radius = 2, op = *) where {T}
E, sizes = wlmetric_ball_thr(S, radius = radius, op = op)
isone(center) && return E, sizes
return c .* E, sizes
@ -138,9 +121,9 @@ function wlmetric_ball(
radius = 2,
op = *,
threading = true,
) where {T<:Union{GroupElement,AbstractAlgebra.NCRingElem}}
) where {T}
threading && return wlmetric_ball_thr(S, center, radius = radius, op = op)
return return wlmetric_ball_serial(S, center, radius = radius, op = op)
return wlmetric_ball_serial(S, center, radius = radius, op = op)
end
"""