Vocal and gestural sequences of several primates have been found to conform two general principles information compression: the compensation between duration a construct that its components (Menzerath–Altmann law) an inverse relationship signal occurrence (Zipf’s law abbreviation). Even though Zipf’s brevity has proposed as universal in animal communication, evidence on non-human primate vocal ...

SIR,-Like you in your Nov 17 editorial "Brevity in The Lancet" we decided to "store, rather than print, the fine detail" of certain articles which we call, in their published form, Technical Briefs. We have published 5-10 in each monthly issue since 1986. We have been surprised at the rarity of requests for these stored details: among several hundred Technical Briefs published so far, we have r...

1. Run t = O(1/ε2) independent copies of Algorithm AMS, denoting their Z values by Y1, . . . , Yt, and output their mean Ỹ = ∑ j Y 2 j /t. Observe that the sketch (Y1, . . . , Yt) is still linear. ∗These notes summarize the material covered in class, usually skipping proofs, details, examples and so forth, and possibly adding some remarks, or pointers. The exercises are for self-practice and ne...

INTRODUCTION DCT image compression. The discrete cosine transform (DCT) is a standard method by which images may be compressed. Initially, the image is divided into 8x8-pixel blocks, each of which is then transformed into its DCT, which is an 8x8 matrix of coefficients. Each coefficient cij , specifies the magnitude of a DCT frequency (or basis function), indexed by i, j . For brevity, we adopt...

is so great as to cause the omission of large portions of the subject there are grave objections to the plan. The author of the small work before us says in the preface that " brevity" has been his aim, so that busy practitioners, who have not time to read " more comprehensive " works, may yet be able to turn to his in the hour of need. Most men in active practice do not, however, read text-boo...