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Aggregation: Aggregation may refer to uses in: Business and economics: Aggregation problem Purchasing aggregation, the joining of multiple purchasers in a group purchasing organization to increase their buying power Community Choice Aggregation, the joining of geographically contiguous communities to bypass a conventional energy utility monopoly and seek a greener energy serviceComputer science and telecommunication: Aggregate function, a type of function in data processing Aggregation, a form of object composition in object-oriented programming Link aggregation, using multiple Ethernet network cables/ports in parallel to increase link speed Packet aggregation, joining multiple data packets for transmission as a single unit to increase network efficiency Route aggregation, the process of forming a supernet in computer networking Aggregation, a process by which Australian country television markets were combined in the late 1980s and 1990s; see Regional television in AustraliaNatural sciences and statistics: Aggregation of soil granules to form soil structure Particle aggregation, direct mutual attraction between particles (atoms or molecules) via van der Waals forces or chemical bonding The accumulation of platelets to the site of a wound to form a platelet plug or a thrombus Flocculation, a process where a solute comes out of solution in the form of floc or flakes Overdispersion or statistical aggregation, where the variance of a distribution is higher than which we expect.
Aggregation problem: An aggregate in economics is a summary measure describing a market or economy. The aggregation problem is the difficult problem of finding a valid way to treat an empirical or theoretical aggregate as if it reacted like a less-aggregated measure, say, about behavior of an individual agent as described in general microeconomic theory.
Aggregation number: An aggregation number is a description of the number of molecules present in a micelle once the critical micelle concentration has been reached. In more detail, it has been defined as the average number of surfactant monomers in a spherical micelle.The aggregation number of micelles can be determined by isothermal titration calorimetry when the aggregation number is not too high.Another classical experiment to determine the mean aggregation number would involve the use of a luminescent probe, a quencher and a known concentration of surfactant.
Aggregation (linguistics): Aggregation is a subtask of natural language generation, which involves merging syntactic constituents together. Sometimes aggregation can be done at a conceptual level.