v0.19.0

New Features

• Matrix sample mean
• Matrix mean deviation form
• Covariance matrix
• Matrix representation as array of column vectors
• Finance future value
• Finance present value

v0.18.0

New Features

• Joint entropy
• Rényi entropy
• Perplexity
• Matrix scalar division
• Finance: Annual Equivalent Rate (AER)

Improvements

• Fix vector pnorm to take absolute value of each element

Backwards Incompatible Changes

• Refactor distances and divergences from InformationTheory\Entropy to Statistics\Distance

v0.17.0

New Features

• Two-sample z significance test

v0.16.0

New Features

• Information Theory
  • Shannon entropy (bits, nats, hartleys)
  • Cross entropy
  • Bhattacharyya distance
  • Kullback-Leibler divergence
  • Hellinger distance
  • Jensen-Shannon divergence
• Linear Algebra
  • vectorMultiply method on Matrix to return Vector when multiply with a Vector

v0.15.0

New Features

• Lazy caterer's sequence
• Magic squares sequence

v0.14.0

New Features

• Look-and-say sequence

Version v0.13.0

New Features

• Custom exception classes

Improvements

• Refactor exceptions to use custom exception classes

v0.12.0

New Features

• Softmax function
• Effect size η² (Eta-squared)
• Effect size η²p (Partial eta-squared)
• Effect size ω² (omega-squared)
• Effect size Cohen's ƒ²
• Effect size Cohen's q
• Effect size Cohen's d
• Effect size Hedges' g
• Effect size Glass' Δ (glass' delta)

Improvements

• Replace mt_rand with random_int

v0.11.0

Backwards Incompatible Changes

• Change root namespace from Math to MathPHP
  • (Run composer update to update autoloader)

V0.10.0

New Features

• Clamped Cubic Spline Interpolation
• Custom variable in Polynomial class

Improvements

• Refactor interpolation techniques