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  2. Document-term matrix - Wikipedia

    en.wikipedia.org/wiki/Document-term_matrix

    Each ij cell, then, is the number of times word j occurs in document i. As such, each row is a vector of term counts that represents the content of the document corresponding to that row. For instance if one has the following two (short) documents: D1 = "I like databases" D2 = "I dislike databases", then the document-term matrix would be:

  3. Frequency (statistics) - Wikipedia

    en.wikipedia.org/wiki/Frequency_(statistics)

    Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval, and in this way, the table summarizes the distribution of values in the sample. This is an example of a univariate (=single variable) frequency table. The frequency of each response to a survey question is depicted.

  4. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    The above is not limited to subtractions, try = 1 + 1.405*2^(-48) in one cell, Excel rounds the display to 1,00000000000000000000, and = 0.9 + 225179982494413×2^(-51) in another, same display [d] above, different rounding for value and display, violates one of the elementary requirements in Goldberg (1991) [8] who states:

  5. Spreadsheet - Wikipedia

    en.wikipedia.org/wiki/Spreadsheet

    To make such a formula, one replaces a number with a cell reference. For instance, the formula =5*C10 would produce the result of multiplying the value in cell C10 by the number 5. If C10 holds the value 3 the result will be 15. But C10 might also hold its formula referring to other cells, and so on. A spreadsheet's concatenation ("&") function ...

  6. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...

  7. Are Seed Oils Really Unhealthy? Dietitians Explain. - AOL

    www.aol.com/seed-oils-really-unhealthy...

    Seed oils, including peanut oil and sunflower oil, have been in the news a lot recently. Dietitians explain if seed oils are healthy, and health risks of them.

  8. China, Trump talk up prospects for US-China collaboration

    www.aol.com/news/china-trump-talk-prospects-us...

    The two superpowers have been setting out their positions ahead of Trump's return to the White House. His first term resulted in a trade war that uprooted global supply chains and hurt almost ...

  9. Days before bitter cold descends on the nation’s capital for the inauguration of Donald Trump, Ronald Reagan Washington National Airport has a problem with its heating system in the terminal.