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RandomComplexes :: testTimeForLLLonSyzygies

testTimeForLLLonSyzygies -- test timing for LLL on syzygies

Synopsis

Description

We randomly choose an $r \times\ n$ matrix A over ZZ with entries up to the given Height, and take the time to compute B=ker A and an LLL basis of B.

i1 : setRandomSeed "nice example 2";
i2 : r=10,n=20

o2 = (10, 20)

o2 : Sequence
i3 : (m,t1,t2)=testTimeForLLLonSyzygies(r,n,Height=>11)

o3 = ({5, 2.91596e52, 9}, .00176575, .000934072)

o3 : Sequence
i4 : (m,t1,t2)=testTimeForLLLonSyzygies(15,30,Height=>100)

o4 = ({50, 2.30853e454, 98}, .00494068, .0354587)

o4 : Sequence
i5 : L=apply(10,c->(testTimeForLLLonSyzygies(15,30))_{1,2})

o5 = {{.0054005, .0126867}, {.00546904, .00440983}, {.00574777, .00687441},
     ------------------------------------------------------------------------
     {.00582933, .0103148}, {.00562332, .013382}, {.0228286, .0122612},
     ------------------------------------------------------------------------
     {.00531727, .00854623}, {.00578026, .00785454}, {.00506714, .00579812},
     ------------------------------------------------------------------------
     {.00635173, .00837833}}

o5 : List
i6 : 1/10*sum(L,t->t_0)

o6 = .00734149230000001

o6 : RR (of precision 53)
i7 : 1/10*sum(L,t->t_1)

o7 = .009050611

o7 : RR (of precision 53)

Ways to use testTimeForLLLonSyzygies :

For the programmer

The object testTimeForLLLonSyzygies is a method function with options.