This is combining units to reduce problem dimensions One form of aggregation is to combine basic entities at the data level, such as regions, time periods, and materials The dimensions of the mathematical program, which include numbers of variables and constraints, are generally reduced by aggregation at the entity level Another form of aggregation is the use of surrogates, including the strong form: integer equivalent aggregation
The policy under which all futures positions owned or controlled by one trader or group of traders are combined to determine reporting status and speculative limit compliance
Aggregation models the is subpart of relationship set It is used when one object class is made up of one or more component object classes
A mass or body of individual units or particles Healthy soil has good aggregation As microorganisms and worms feed, they form polysaccharides which act like glue to hold individual soil particles together, creating groups, or aggregates, of particles This loose formation allows soil to hold both water and air, and does not restrict the growth of roots
Process in corporate financial planning whereby the smaller investment proposals of each of the firm's operational units are aggregated and effectively treated as a whole
Aggregation is a form of abstraction It is a conceptual way of viewing "the whole" while filtering out details about its parts This is sometimes referred to as "seeing the forest for the trees " It recognizes the identity of a "higher level" aggregate object whose characteristics transcend the characteristics of its component parts
The principle under which all futures positions owned or controlled by one trader (or group of traders acting in concert) are combined to determine reporting status and compliance with speculative limits
In CL diagrams, an aggregation is an "is part of" relationship connecting one or more "part classes" to a "container" or "assembly" class For example, in a CL diagram of an athletic club, the employees, members and equipment all could be connected to the club itself via an aggregation (part association) In an aggregation symbol, a diamond points to the assembly class
a circumstance in which higher level information (which may be thought to be subject to a higher level of security clearance) may be inferred from a large number of lower level data items A collection of information items may be required to be classified at a higher security level than any of the individual items that comprise it
The policy under which all futures positions owned or controlled by one trader or a group of traders are combined to determine reporting status and speculative limit compliance
means the set of its parts Each element of such a set is said to be 'part of' the aggregation aggregation is a means that is much simpler to deal with than abstraction because it appeals to observable things at any level of aggregation aggregation is a 1: n association An aggregation simply identifies the sum of its parts in contrast to abstraction which identifies the set of common properties of its instances
The combination of the consequents of each rule in a Mamdani fuzzy inference system in preparation for defuzzification
A composition technique for implementing component objects whereby a new object can be built by using one or more existing objects that support some or all of the new object's required interfaces
The grouping together of a selected set of like entities to form a single entity For example, grouping sets of adjacent areal units to form larger units, such as grouping ZIP Codes to form PCSAs
Process in corporate financial planning whereby the smaller investment proposals of each of the firm's operational units are added up and in effect treated as a big picture [Harvey] The principle under which all futures positions owned or controlled by one trader (or group of traders acting in concert) are combined to determine reporting status and compliance with speculative limits [CFTC]
A relationship in which an object contains one or more other subordinate objects as part of its state The subordinate objects typically have no independent existence separate from their containing object When the containing object has no further useful existence, neither do the subordinate objects For instance, a gas station object might contain several pump objects These pumps will only exist as long as the station does Aggregation is also referred to as the has-a relationship, to distinguish it from the is-a relationship, which refers to inheritance
Also commonly called a summary, an aggregation is a collection of data calculated from detail transactions An aggregation is usually a sum, count or average of the underlying detail, and often is calculated along several business dimensions , i e total sales by customer by product (back to top)
A special case of association that occurs between a whole-part relationship Aggregation is known as a 'part-of' relationship or inclusion relationship
The OECD Secretariat aggregates time series into regional aggregates using individual country 1995 weights in GDP or expenditure items based on 1995 purchasing power parities (PPPs) See Annex Table: Weighting Scheme for aggregate measures
A special form of association that specifies a whole-part relationship between the aggregate (whole) and a component part Contrast: composition
A process of grouping distinct data The aggregated data set has a smaller number of data elements than the input data set
Combining index relatives from one level to the next higher level The procedure for the International Price Program begins with the aggregation of item level relatives to weight group relatives The weight group relatives are then aggregated to the classification group relatives The classification group relatives are then aggregated to the stratum lower relatives which in turn are aggregated up the tree of stratum upper relatives to the All Import or All Export index level
gathered or tending to gather into a mass or whole; "aggregate expenses include expenses of all divisions combined for the entire year"; "the aggregated amount of indebtedness"
An aggregate is a number of people or things that are being considered as a single thing. society viewed as an aggregate of individuals. being the total amount of something after all the figures or points have been added together
Granular material, such as sand, gravel, crushed stone, and iron blast-furnace slag, used with a cementing medium to form a hydraulic-cement, concrete or mortar
A collection of information in which no individual information can be distinguished or identified Aggregated information can be used to determine the characteristics of a group, such as "Sixty percent of our users are over 35 "
An aggregate is an arrangement of components and connectors into a graph structure Formally, an aggregate is defined by a set of components, a set of connectors, and a set of attachments from ports of the components to roles of the connectors An aggregate representation is a representation of a component or connector by an aggregate sub-architecture In addition to the elements that an aggregate has, an aggregate representation also has a set of bindings from ports and roles inside the aggregate to ports and roles on the element that the aggregate representation represents
A granular material, such as sand, gravel, crushed stone and iron blast-furnace slag, used with a cementing medium to form a hydraulic cement concrete or mortar
Hard, inert mineral material, such as gravel, crushed rock, slag or crushed stone, used in pavement applications either by itself or for mixing with asphalt
Solid particles of low aspect ratio added to a composite material, as distinguished from the matrix and any fibers or reinforcements, especially the gravel and sand added to concrete. (technical)
(noun) A total created from smaller units For instance, the population of a county is an aggregate of the populations of the cities, rural areas, etc , that comprise the county (verb) To total data from smaller units into a large unit Example: "The Census Bureau aggregates data to preserve the confidentiality of individuals "
To bring individual power purchasers together into a group to add together (or aggregate) their electricity demand Aggregated customers will have more negotiating power with generating companies that, for example, an individual homeowner
Any one of the five bases for clinging to a sense of self: form (physical phenomena, including the body), feelings, perceptions (mental labels), thought-fabrications, consciousness
A hard inert mineral material, such as gravel, crushed rock, slag, or crushed stone, used in pavement applications either by itself or for mixing with asphalt
a group of many individual owner accounts reported in one lump sum total without names, addresses, and Social Security numbers The dollar amount that each state allows to be reported in aggregate varies (Idaho no longer requires property with a value of $50 or less to be reported, in effect eliminating aggregates in this state Although holders are not required to report these items, they may voluntarily report and remit them )
A word coined by George Olshevsky for stellations with no internal faces, such as those described in The Fifty-nine Icosahedra This is also the kind of stellation made by Great Stella They look identical from the outside to other stellations with internal faces, but may be topologically different
a sum total of many heterogenous things taken together gather in a mass, sum, or whole gathered or tending to gather into a mass or whole; "aggregate expenses include expenses of all divisions combined for the entire year"; "the aggregated amount of indebtedness"
An aggregate amount or score is made up of several smaller amounts or scores added together. England have beaten the Welsh three times in succession with an aggregate score of 83-12. Aggregate is also a noun. The highest aggregate came in the third round where Leeds and Middlesbrough drew 4-4
A coarse material, such as gravel, broken stone or sand, with which cement and water are mixed to form concrete Crushed stone is usually designated as coarse aggregate and sand as fine aggregate