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Author SHA1 Message Date
Keir Mierle f7898fba1b Add a general sparse iterative solver: CGNR 
This adds a new LinearOperator which implements symmetric
products of a matrix, and a new CGNR solver to leverage
CG to directly solve the normal equations. This also
includes a block diagonal preconditioner. In experiments
on problem-16, the non-preconditioned version is about
1/5 the speed of SPARSE_SCHUR, and the preconditioned
version using block cholesky is about 20% slower than
SPARSE_SCHUR.
 2012-05-05 20:55:08 -07:00
Sameer Agarwal 6447219826 1. Changes the tutorial to refer to BriefReport. 
2. Some of the enums have commas at the end.
3. Fix a bug in the default value of circle_fit.cc in the examples.
 2012-05-03 21:53:07 -07:00
Keir Mierle 8ebb073038 Initial commit of Ceres Solver. 2012-04-30 23:09:08 -07:00