Class: Vector

eclairjs/mllib/linalg.Vector

(abstract) new Vector()

Represents a numeric vector, whose index type is Int and value type is Double. Note: Users should not implement this interface.
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Methods

apply(i) → {Promise.<number>}

Gets the value of the ith element.
Parameters:
Name Type Description
i number index
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Returns:
Type
Promise.<number>

argmax() → {Promise.<number>}

Find the index of a maximal element. Returns the first maximal element in case of a tie. Returns -1 if vector has length 0.
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Returns:
Type
Promise.<number>

compressed() → {module:eclairjs/mllib/linalg.Vector}

Returns a vector in either dense or sparse format, whichever uses less storage.
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Returns:
Type
module:eclairjs/mllib/linalg.Vector

copy() → {module:eclairjs/mllib/linalg.Vector}

Makes a deep copy of this vector.
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Returns:
Type
module:eclairjs/mllib/linalg.Vector

equals(other) → {Promise.<boolean>}

Parameters:
Name Type Description
other object
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Returns:
Type
Promise.<boolean>

foreachActive(f) → {Promise.<Void>}

Applies a function `f` to all the active elements of dense and sparse vector.
Parameters:
Name Type Description
f func the function takes two parameters where the first parameter is the index of the vector with type `Int`, and the second parameter is the corresponding value with type `Double`.
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Returns:
A Promise that resolves to nothing.
Type
Promise.<Void>

hashCode() → {Promise.<number>}

Returns a hash code value for the vector. The hash code is based on its size and its first 128 nonzero entries, using a hash algorithm similar to hashCode.
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Returns:
Type
Promise.<number>

numActives() → {Promise.<number>}

Number of active entries. An "active entry" is an element which is explicitly stored, regardless of its value. Note that inactive entries have value 0.
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Returns:
Type
Promise.<number>

numNonzeros() → {Promise.<number>}

Number of nonzero elements. This scans all active values and count nonzeros.
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Returns:
Type
Promise.<number>

size() → {Promise.<number>}

Size of the vector.
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Returns:
Type
Promise.<number>

toArray() → {Promise.<Array.<number>>}

Converts the instance to a double array.
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Returns:
Type
Promise.<Array.<number>>

toDense() → {module:eclairjs/mllib/linalg.DenseVector}

Converts this vector to a dense vector.
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Returns:
Type
module:eclairjs/mllib/linalg.DenseVector

toJSON() → {Promise.<string>}

Converts the vector to a JSON string.
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Returns:
Type
Promise.<string>

toSparse() → {SparseVector}

Converts this vector to a sparse vector with all explicit zeros removed.
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Returns:
Type
SparseVector