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Last update: Saturday 11th of February 2012
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Wiktionary, the free dictionary.
Similarity is some degree of symmetry in either analogy and resemblance between two or more concepts or objects. The notion of similarity rests either on exact or approximate repetitions of patterns in the compared items. In the case of approximate repetitions we talk about statistical similarity as found in a fractal and its parts. Finding similarities or distinguishing between dissimilarities depends on the faculties of pattern recognition and disambiguation, respectively.
Different fields provide differing definitions of similarity:
- In mathematics:
- Similarity (geometry)
- Similar matrices
- In psychology, similarity (psychology)
- In music, Musical similarity
- In computational linguistics, semantic similarity
- Natural similarity
In philosophy, similarity is defined as sharing properties. So the sky is similar to the sea, for example, because the sky and the sea both share the property of being blue.
This definition has some interesting consequences. First, it follows that resemblance is reflexive, since everything shares its own properties. Second, it follows that resemblance is symmetric, since if x shares properties with y then y shares those same properties with x. Third, qualitative identity turns out to be a limiting case of resemblance, since qualitative identity is defined as sharing all rather than some properties.
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In a social bookmarking system, users store lists of Internet resources that they find useful. These lists are either accessible to the public or a specific network, and other people with similar interests can view the links by category, tags, or even randomly. This page list over 180 Social Bookmarking sites. You must have a look :)
Viagra, Levitra, Cialis, Caverta, Kamagra, Silagra... They are so similar and so different at the same time. Which one to choose?
The treatment of lupus is difficult because it is an autoimmune condition where the body creates antibodies that attack its own tissues. The symptoms are similar to those of other diseases, so the treatment of lupus can often be delayed in absence of any diagnosis. However, using a 4-point program, lupus treatment is possible...
La anorexia y la bulimia son dos males que afectan a nuestra sociedad. La obsesión por una figura esbelta, similar a las de los modelos, lleva a cientos de adolescentes a realizar ridículas dietas, innecesarias, que llegan a no comer con tal de estar “en línea” y comprar talles más chicos de ropa.
The Real Deal from Microsoft.com. Similar to the previous free Office 2007 & Windows Vista deals, attend 2 90-minute lab sessions for the product and score it for free. I suggest registering early. The copies are limited to those that register first, not those who attend the sessions first.