quicsvd_main.cc File Reference

This file implements command line interface for the QUIC-SVD method. More...

Include dependency graph for quicsvd_main.cc:

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Functions
int	main (int argc, char *argv[])
double	norm (const Matrix &A)
Variables
const fx_module_doc	quicsvd_main_doc
const fx_entry_doc	quicsvd_main_entries []
const fx_submodule_doc	quicsvd_main_submodules []

---

Detailed Description

This file implements command line interface for the QUIC-SVD method.

It approximate the original matrix by another matrix with smaller dimension to a certain accuracy degree specified by the user and then make SVD decomposition in the projected supspace.

Run with --help for more usage.

See also:

quicsvd.h

Definition in file quicsvd_main.cc.

---

Variable Documentation

const fx_module_doc quicsvd_main_doc

Initial value:

 {
  quicsvd_main_entries, quicsvd_main_submodules,
  "This is a program calculating an approximated Singular "
  "Value Decomposition using QUIC-SVD method.\n"
}

Definition at line 78 of file quicsvd_main.cc.

const fx_entry_doc quicsvd_main_entries[]

Initial value:

 {
  {"A_in", FX_REQUIRED, FX_STR, NULL,
   " File consists of matrix A to be decomposed A = U S VT. \n"},
  {"relErr", FX_PARAM, FX_DOUBLE, NULL,
   " Target relative error |A|-|A'|/|A|, default = 0.1.\n"},
  {"U_out", FX_PARAM, FX_STR, NULL,
   " File to hold matrix U.\n"},
  {"s_out", FX_PARAM, FX_STR, NULL,
   " File to hold the singular values vector s.\n"},
  {"VT_out", FX_PARAM, FX_STR, NULL,
   " File to hold matrix VT (V transposed).\n"},
  {"SVT_out", FX_PARAM, FX_STR, NULL,
   " File to hold matrix S * VT (the dimension reduced data).\n"},
  {"lasvd", FX_PARAM, FX_STR, NULL,
   " Use this parameter to compare running time to that of la::SVDInit().\n"},
  {"quicsvd_time", FX_TIMER, FX_CUSTOM, NULL,
   " time to run the QUIC-SVD algorithm.\n"},
  {"lasvd_time", FX_TIMER, FX_CUSTOM, NULL,
   " time to run the SVD algorithm from LAPACK.\n"},
  {"actualErr", FX_RESULT, FX_DOUBLE, NULL,
   " actual relative norm error.\n"},
  {"dimension", FX_RESULT, FX_INT, NULL,
   " the reduced dimension of the data.\n"},
  FX_ENTRY_DOC_DONE
}

Definition at line 48 of file quicsvd_main.cc.

const fx_submodule_doc quicsvd_main_submodules[]

Initial value:

 {
  FX_SUBMODULE_DOC_DONE
}

Definition at line 74 of file quicsvd_main.cc.