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PGM2 2.0.0

Major generalisation: the whole construction now works over GF(p) for any prime p, as in the theory of Boudraa, Gheribi-Aoulmi & Laib (2013). Versions <= 1.2 implemented only p = 2.

New features

• New function Qn(m, n, p = 2): builds the reduced resolvable design Q*_n of stage n directly, with its associated uniform design U(p^m, (pⁿ⁾r) — the design of the 2013 paper’s Example 3, previously constructible only by hand. Any two runs coincide in a constant number of factors (equidistance), so every stage attains the discrete-discrepancy lower bound of Fang et al. (2004), and levels refine across stages.
• BIB(m, p = 2) and Steps(m, n, stage, p = 2) gain a p argument (prime; checked). Gen() and Resolvable() are now order-agnostic: block sizes are derived from the data instead of binary-only formulas.
• BIB() additionally returns Lambda, the concurrence parameter.
• A test suite validates every construction against the parameters published in Tables 1 (p = 2) and 2 (p = 3) of the 2013 paper, checks balance (constant r and lambda over all pairs), actual resolvability (partition into parallel classes) and level balance of the uniform designs.
• A vignette reproduces all worked examples and both tables of the paper.

Backward compatibility

• For p = 2 (the default), BIB(), Gen(), Resolvable() and Uniform() return exactly the same designs as version 1.2 (this is enforced by a regression test against the 1.2 algorithm).
• Steps() now returns a tidy named list (BIB1, BIBg, Resolvables, UDs, each stage a proper sub-list) instead of the flat, partially unnamed splice of previous versions.
• Uniform() no longer emits recycling warnings (an internal placeholder row was removed); results are unchanged.
• Input validation: BIB() rejects non-prime p and m < 2 with clear error messages.

PGM2 1.2

• Last GF(2)-only release (CRAN, 2025-05-27).

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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