Brand equity - Wikipedia
It has been said that brand equity is "the branding of a product name on an attention-deficit public."[6] While most brand equity research has taken place in consumer markets, the concept of brand equity is also important for understanding competitive dynamics and price structures of business-to-business markets. In industrial markets competition is often based on differences in product performanc
Apples and oranges - Wikipedia
An apple and an orange, not to be practically compared A comparison of apples and oranges occurs when two items or groups of items are compared that cannot be practically compared, typically because of inherent or fundamental differences between the objects. The idiom, comparing apples and oranges, refers to the differences between items which are popularly thought to be incomparable or incommensu
Pigeonhole principle - Wikipedia
Pigeons in holes. Here there are n = 10 pigeons in m = 9 holes. Since 10 is greater than 9, the pigeonhole principle says that at least one hole has more than one pigeon. (The top left hole has 2 pigeons.) In mathematics, the pigeonhole principle states that if n items are put into m containers, with n > m, then at least one container must contain more than one item.[1] For example, of three glove
Locality-sensitive hashing - Wikipedia
In computer science, locality-sensitive hashing (LSH) is a fuzzy hashing technique that hashes similar input items into the same "buckets" with high probability.[1] (The number of buckets is much smaller than the universe of possible input items.)[1] Since similar items end up in the same buckets, this technique can be used for data clustering and nearest neighbor search. It differs from conventio
Hash function - Wikipedia
A hash function that maps names to integers from 0 to 15. There is a collision between keys "John Smith" and "Sandra Dee". A hash function is any function that can be used to map data of arbitrary size to fixed-size values, though there are some hash functions that support variable-length output.[1] The values returned by a hash function are called hash values, hash codes, hash digests, digests, o
Cuckoo hashing - Wikipedia
Cuckoo hashing example. The arrows show the alternative location of each key. A new item would be inserted in the location of A by moving A to its alternative location, currently occupied by B, and moving B to its alternative location which is currently vacant. Insertion of a new item in the location of H would not succeed: Since H is part of a cycle (together with W), the new item would get kicke
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Technical features new to Windows Vista - Wikipedia