Instructions

- To use this tool, please enter row values separated by spaces.
- End each row by pressing the
`Enter`

key so these are recognized as individual entries.

Who can use it?

- Researchers, teachers, students, or anyone working with matrices.

Exercises

- Show with examples that
- (AA
^{t})^{t} = AA^{t}
- (ABC)
^{t} = C^{t}B^{t}A^{t}
- AA
^{t} = A^{t}A for any square matrix symmetric across its diagonal.

- Compute the term-term and document-document matrices from a term-document matrix populated with frequency values.
- Generate
- an uncorrected sums of squares and cross products
matrix (USSCP).
- a corrected sums of squares and cross products
matrix (CSSCP).
- a covariance matrix.
- a correlation matrix.

References

- Carey, G. (1998). Important Matrices for Multivariate Analysis.
- Handbook of Applied Mathematics for Engineers and Scientists; Max Kurtz, McGraw Hill (1991).
- Discrete Dynamical Systems, Theory and Applications; James T. Sandefur, Oxford University Press; Chapter 6 Absorbing Markov Chains (1990).

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