Burgess, J.P. and Rosen, G. Subject with No ObjectElliott, R.Faking Nature.

The graph edit distance (GED) measures the dissimilarity between two graphs as the minimal cost of a sequence of elementary operations transforming one graph into another. This measure is fundamental in many areas such as structural pattern recognition or classification. However, exactly computing GED is NP-hard. Among different classes of heuristic algorithms that were proposed to compute approximate solutions, local search based algorithms provide the tightest upper bounds for GED. In this paper, we present K-REFINE and RANDPOST. K-REFINE generalizes and (...) improves an existing local search algorithm and performs particularly well on small graphs. RANDPOST is a general warm start framework that stochastically generates promising initial solutions to be used by any local search based GED algorithm. It is particularly efficient on large graphs. An extensive empirical evaluation demonstrates that both K-REFINE and RANDPOST perform excellently in practice. (shrink)

An attempt to evolve a puristic definition of poetry in which the poem itself serves as the point of departure. The examination is systematically conducted throughout the three parts of the book: "Phonétique," "Sémantique," and "Ontologie." Frequent textual examples are offered; the accompanying analyses are often illuminating, particularly in the case of the cryptic "sonnet du Cygne" by Mallarmé. A key concept in the discussion is "la conversion poétique du langage": the means by which a word is freed from its (...) accepted meaning and enabled to acquire a multiplicity of meanings. The hierarchy of symbol and object-symbolized is always destroyed by "la conversion": that which is poetic cannot be symbolic. "Symbolist poetry" is, therefore, a misnomer. By modifying or totally eliminating traditional literary formulae, Champigny arrives at and ably defends his own concept of "le genre poétique."—B. B. C. (shrink)