Peaking summarized

…Pattern recognition learns from examples. Thereby, generalization is needed. This can only be done if the objects, or at least the differences between pattern classes have a finite complexity….

Aristotle and the ugly duckling theorem

…The Aristotelian researcher starts from his observations and tries to combine them logically. In the extreme he is mainly a collector of observations and at most comes to empty abstractions….

Who invented the nearest neighbor rule?

…same results. It is thereby very suitable as a base routine in comparative studies. But who invented it? Marcello Pelillo looked back in history and tried to give an answer….

There is no best classifier

…need more training examples to compensate for the lack of prior knowledge. Classifiers that make assumptions that are not true, perform worse. The above is illustrated by one of the…

…Is the neural network model good for pattern recognition? Or, is it too complex, too vague, too clumsy to be of any use in performing applications or in building…

Random Representations

…The goal of representation is in pattern recognition to map objects into a domain in which they can be compared. Usually, this domain is a vector space. It…

The Eurovision Song Contest Analyzed

…to be represented by very distant vectors. A complicating aspect is that countries are not allowed to give points to their own song. Such a restriction only holds for the…

The dissimilarity space – a step into the darkness

…large if they don’t. The quality of the measure directly relates to the discriminative power of the dissimilarity-based feature. Let us interpret dissimilarities as features! We first compute suitable dissimilarities…

Non-Euclidean embedding

…are computed according to then the resulting set of dissimilarities appears to be Euclidean. For the above example the, so-called, p-space can be a one-dimensional space in which the book,…

Discovered by accident

…that a castle or a ship is hidden in the heap. They randomly combine them. A surprising result may suddenly appear, depending on their imagination. When they are sufficiently skilled…

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