mirror of
https://github.com/sjwhitworth/golearn.git
synced 2025-04-26 13:49:14 +08:00
e30ff6580a
* Only numeric and categorical ARFF attributes are currently supported.
* Only the dense version of the ARFF format is supported.
* Compressed format is .tar.gz file which should allow extensibility.
* Attributes stored using JSON representations.
* Also offers smarter estimation of the precision of numeric Attributes.
* Also adds support for writing instances to CSV
50 lines
1.8 KiB
Go
50 lines
1.8 KiB
Go
package base
|
|
|
|
import (
|
|
"encoding/json"
|
|
)
|
|
|
|
const (
|
|
// CategoricalType is for Attributes which represent values distinctly.
|
|
CategoricalType = iota
|
|
// Float64Type should be replaced with a FractionalNumeric type [DEPRECATED].
|
|
Float64Type
|
|
BinaryType
|
|
)
|
|
|
|
// Attributes disambiguate columns of the feature matrix and declare their types.
|
|
type Attribute interface {
|
|
json.Unmarshaler
|
|
json.Marshaler
|
|
// Returns the general characterstics of this Attribute .
|
|
// to avoid the overhead of casting
|
|
GetType() int
|
|
// Returns the human-readable name of this Attribute.
|
|
GetName() string
|
|
// Sets the human-readable name of this Attribute.
|
|
SetName(string)
|
|
// Gets a human-readable overview of this Attribute for debugging.
|
|
String() string
|
|
// Converts a value given from a human-readable string into a system
|
|
// representation. For example, a CategoricalAttribute with values
|
|
// ["iris-setosa", "iris-virginica"] would return the float64
|
|
// representation of 0 when given "iris-setosa".
|
|
GetSysValFromString(string) []byte
|
|
// Converts a given value from a system representation into a human
|
|
// representation. For example, a CategoricalAttribute with values
|
|
// ["iris-setosa", "iris-viriginica"] might return "iris-setosa"
|
|
// when given 0.0 as the argument.
|
|
GetStringFromSysVal([]byte) string
|
|
// Tests for equality with another Attribute. Other Attributes are
|
|
// considered equal if:
|
|
// * They have the same type (i.e. FloatAttribute <> CategoricalAttribute)
|
|
// * They have the same name
|
|
// * If applicable, they have the same categorical values (though not
|
|
// necessarily in the same order).
|
|
Equals(Attribute) bool
|
|
// Tests whether two Attributes can be represented in the same pond
|
|
// i.e. they're the same size, and their byte order makes them meaningful
|
|
// when considered together
|
|
Compatible(Attribute) bool
|
|
}
|