backtracking_linesearch function

[singhvasu1626]

every time i run the codes on Julia DeVito its throws the error that backtracking_linesearch function is not defined.
also in calculating through stochastic gradient it tells "m" not defined.
I am not able to resolve why it is giving this error. please help me as soon as possible!!!

[mloubout]

Hi, can I ask what version of JUDI and of the examples you are running?

[mloubout]

The leading edge tutorial correspond to an older version of JUDI (from 2019). You can find the updated corresponding examples for the newest JUDI version as

https://github.com/slimgroup/JUDI.jl/blob/master/examples/scripts/fwi_example_2D.jl

[singhvasu1626]

sir i tried this also...in line

Projection operator for bound constraints

proj(x) = reshape(median([vec(mmin) vec(x) vec(mmax)]; dims=2),model0.n)
ls = BackTracking(order=3, iterations=10, )
it was giving same error for backtracking that function not defined
and in this line

Update model and bound projection

model0.m .= proj(model0.m .+ step .* p)

telling "m " not defined

[mloubout]

You need to import the proper package as in the example (SlimOptim or LineSearches) for BackTracking to be defined. The script I linked above is running (with one change on line 14 v0 = sqrt.(1f0 ./ m0)), so make sure you are using all the necessary packages

[singhvasu1626]

ohk sir ....i will try again and let you know...
thank you!!

[singhvasu1626]

@mloubout thank you sir very much ...now the codes are executing successfully !!!!!
Given a good platform for students like us !!! Excellent work

[mloubout]

Great to hear