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Diffstat (limited to 'src/Rips_complex/utilities/ripscomplex.md')
| -rw-r--r-- | src/Rips_complex/utilities/ripscomplex.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/Rips_complex/utilities/ripscomplex.md b/src/Rips_complex/utilities/ripscomplex.md index 6df49310..03838085 100644 --- a/src/Rips_complex/utilities/ripscomplex.md +++ b/src/Rips_complex/utilities/ripscomplex.md @@ -85,7 +85,7 @@ properly, this is a known issue. ## sparse_rips_persistence ## This program computes the persistent homology with coefficient field *Z/pZ* -of a sparse (1+epsilon)-approximation of the Rips complex defined on a set of input Euclidean points. The output diagram contains one bar per line, written with the convention: +of a sparse 1/(1-epsilon)-approximation of the Rips complex defined on a set of input Euclidean points. The output diagram contains one bar per line, written with the convention: `p dim birth death` @@ -99,8 +99,8 @@ where `dim` is the dimension of the homological feature, `birth` and `death` are * `-h [ --help ]` Produce help message * `-o [ --output-file ]` Name of file in which the persistence diagram is written. Default print in standard output. -* `-e [ --approximation ]` (default = .5) Epsilon, where the sparse Rips complex is a (1+epsilon)-approximation of the Rips complex. -* `-d [ --cpx-dimension ]` (default = 1) Maximal dimension of the Rips complex we want to compute. +* `-e [ --approximation ]` (default = .5) Epsilon, where the sparse Rips complex is a (1+epsilon)/(1-epsilon)-approximation of the Rips complex. +* `-d [ --cpx-dimension ]` (default = INT_MAX) Maximal dimension of the Rips complex we want to compute. * `-p [ --field-charac ]` (default = 11) Characteristic p of the coefficient field Z/pZ for computing homology. * `-m [ --min-persistence ]` (default = 0) Minimal lifetime of homology feature to be recorded. Enter a negative value to see zero length intervals. |