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2. Dell - Wikipedia

   en.wikipedia.org/wiki/Dell

   Dell Inc. is an American technology company that develops, sells, repairs, and supports computers and related products and services. Dell is owned by its parent company, Dell Technologies. [ 3][ 4] Dell sells personal computers (PCs), servers, data storage devices, network switches, software, computer peripherals, HDTVs, cameras, printers, and ...

3. Natural number - Wikipedia

   en.wikipedia.org/wiki/Natural_number

   A natural number can be used to express the size of a finite set; more precisely, a cardinal number is a measure for the size of a set, which is even suitable for infinite sets. The numbering of cardinals usually begins at zero, to accommodate the empty set. ∅ {\displaystyle \emptyset }

4. Basic reproduction number - Wikipedia

   en.wikipedia.org/wiki/Basic_reproduction_number

   is the average number of people infected from one other person. For example, Ebola has an of two, so on average, a person who has Ebola will pass it on to two other people.. In epidemiology, the basic reproduction number, or basic reproductive number (sometimes called basic reproduction ratio or basic reproductive rate), denoted (pronounced R nought or R zero), [1] of an infection is the ...

5. List of countries by number of mobile phones in use - Wikipedia

   en.wikipedia.org/wiki/List_of_countries_by...

   This list ranks the countries of the world by the number of mobile phone numbers in use. Note that it is not the number of phone devices that are being given here, but the number of phone numbers in a country. In some countries, one person might have two mobile phones. Also, some mobile phone numbers may be used by machines as a modem (examples ...

6. Binomial distribution - Wikipedia

   en.wikipedia.org/wiki/Binomial_distribution

   The binomial distribution is the PMF of k successes given n independent events each with a probability p of success. Mathematically, when α = k + 1 and β = n − k + 1, the beta distribution and the binomial distribution are related by [clarification needed] a factor of n + 1 :

7. Machine learning - Wikipedia

   en.wikipedia.org/wiki/Machine_learning

   t. e. Machine learning ( ML) is a field of study in artificial intelligence concerned with the development and study of statistical algorithms that can learn from data and generalize to unseen data and thus perform tasks without explicit instructions. [ 1] Recently, artificial neural networks have been able to surpass many previous approaches ...