| 释义 |
weighting
weight W0010000 (wāt)n. Abbr. wt. or w1. A measure of the heaviness of an object: a contest to guess the weight of a pig.2. The force with which a body is attracted to Earth or another celestial body, equal to the product of the object's mass and the acceleration of gravity.3. a. A unit measure of gravitational force: a table of weights and measures.b. A system of such measures: avoirdupois weight; troy weight.4. An object used principally to exert a force by virtue of its gravitational attraction to Earth, especially:a. A metallic solid used as a standard of comparison in weighing.b. An object used to hold something else down.c. A counterbalance in a machine.d. Sports A heavy object, such as a dumbbell, lifted for exercise or in athletic competition.5. Excessive fat; corpulence: exercising in order to lose weight.6. Statistics A factor assigned to a number in a computation, as in determining an average, to increase or decrease the number's effect on the computation, reflecting its importance.7. Oppressiveness; pressure: the weight of responsibilities.8. The greater part; preponderance: The weight of the evidence is against the defendant.9. a. Influence, importance, or authority: Her approval carried great weight. See Synonyms at importance.b. Ponderous quality: the weight of the speaker's words.10. Sports A classification according to comparative lightness or heaviness. Often used in combination: a heavyweight boxer.11. a. The heaviness or thickness of a fabric in relation to a particular season or use. Often used in combination: a summerweight jacket.b. A measure of the relative thickness of yarn.tr.v. weight·ed, weight·ing, weights 1. To make heavy or heavier: Our backpacks were weighted down with food and other essentials.2. To cause to feel concerned, sad, or preoccupied; burden or oppress: He was weighted with guilt.3. To increase the weight or body of (fabrics) by treating with chemicals.4. Statistics To assign weights or a weight to.5. To cause to have a slant or bias: weighted the rules in favor of homeowners.6. Sports To assign to (a horse) the weight it must carry as a handicap in a race.Idioms: by weight According to weight rather than volume or other measure. make weight Sports To weigh within the limits stipulated for an athletic contest.
[Middle English wight, from Old English wiht; see wegh- in Indo-European roots.]weighting (ˈweɪtɪŋ) n1. (Statistics) a factor by which some quantity is multiplied in order to make it comparable with others. See also weighted average2. (Industrial Relations & HR Terms) an increase in some quantity, esp an additional allowance paid to compensate for higher living costs: a London weighting. Thesaurus| Noun | 1. | weighting - (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importanceweightstatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameterscoefficient - a constant number that serves as a measure of some property or characteristic |
TranslationsIdiomsSeeweightweighting
weighting[′wād·iŋ] (engineering) The artificial adjustment of measurements to account for factors that, in the normal use of the device, would otherwise be different from conditions during the measurements. (textiles) The chemical or mechanical process of adding weight or body to a fabric or yarn, especially silk, by the addition of various materials. weighting
weighting An adjustment in a value based on scientific observations within the data.weighting (wāt′ĭng) 1. In radiation therapy that uses two opposing fields, the use of a higher dose for one of the fields.2. In statistical or numerical analysis, the placing of emphasis on a variable or the gauging of the impact of a variable among a group of potential influences on an outcome.weighting - a method of determining the importance of characters in CLASSIFICATION by attributing different values to them.
- The application of statistical loadings to data so as to enhance the value of some figures and reduce the value of others.
LegalSeeWeightweighting
WeightingWhen calculating an average from a given data set, the process of allowing some data points to affect the average more than others. For example, if one is calculating the average value of a stock index, one may weight the stocks with higher market capitalization greater than other stocks. Likewise, if one is determining a moving average over a given number of trading days, one may weight more recent trading days than those more distant. Weighting can lessen some of the disadvantages of taking the average of a data set instead of taking the median.weighting The assigning of a measure of relative importance to each of a group of variables that are combined. If an investor has 70% of his or her invested funds in stock A, which provides a current yield of 6%, and the remaining 30% of the invested funds in stock B, which provides a current yield of 12%, the weighted current yield of both securities is (0.70)(0.06) + (0.30)(0.12), or 7.8%.Case Study The weighting of individual securities included in an index or average can have a major impact on the market price of both the individual securities included in the index as well as on movements in the index or average itself. Although a few averages are weighted according to each component's price (for example, the Dow Jones Industrial Average), and even fewer are unweighted (the Value Line Average), most are weighted on the basis of market capitalization. That is, the index or average is calculated using a combination of each component's security price and number of outstanding shares. In May 2001 Morgan Stanley Capital International (MSCI), the world's largest indexing company, announced its intention to alter the composition of the indexes the firm calculated and published. In addition to adding and deleting companies, the firm would alter the weighting of most of the securities included in the index. At the time of the announcement MSCI was using full market capitalization to weight the components. That is, the firm was using the total number of shares outstanding, even if some of these shares were unavailable for trading. The new weighting would use "free float," or the number of shares that were actually available to investors. This change was particularly important to shareholders of companies such as Deutsche Telekom and France Telecom because the significant portion of each firm's shares was owned by its government and would not be included under the revised weighting system. The revised weighting would make each of these securities less important in the calculation. It would also likely cause a decline in the price of each security as index funds sold the stocks to rebalance their portfolios. At the same time, other stocks that assumed greater weighting under the new system could be expected to increase in price as index funds accumulated the securities for their portfolios.weighting
Related to weighting: Weighted averageSynonyms for weightingnoun (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importanceSynonymsRelated Words |