Macaulay2 » Documentation
Packages » RandomComplexes :: testTimeForLLLonSyzygies
next | previous | forward | backward | up | index | toc

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}, .00199816, .00100124)

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

o4 = ({50, 2.30853e454, 98}, .00599921, .0349973)

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

o5 = {{.00699981, .011998}, {.00499889, .00399634}, {.00700056, .00699677},
     ------------------------------------------------------------------------
     {.00725687, .00999819}, {.00599935, .0150004}, {.00599845, .0129974},
     ------------------------------------------------------------------------
     {.00600058, .00799623}, {.00599953, .00799774}, {.00399989, .00501024},
     ------------------------------------------------------------------------
     {.00595291, .0090035}}

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

o6 = .006020686300000033

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

o7 = .00909948570000001

o7 : RR (of precision 53)

Ways to use testTimeForLLLonSyzygies:

For the programmer

The object testTimeForLLLonSyzygies is a method function with options.