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Zazzle is an American online marketplace that allows designers and customers to create their own products with independent manufacturers (clothing, posters, etc.), as well as use images from participating companies.
This model is also known as the newsvendor problem or newsboy problem by analogy with the situation faced by a newspaper vendor who must decide how many copies of the day's paper to stock in the face of uncertain demand and knowing that unsold copies will be worthless at the end of the day.
In computer science, the order-maintenance problem involves maintaining a totally ordered set supporting the following operations: insert(X, Y), which inserts X immediately after Y in the total order; order(X, Y), which determines if X precedes Y in the total order; and. delete(X), which removes X from the set.
The two-body problem in general relativity (or relativistic two-body problem) is the determination of the motion and gravitational field of two bodies as described by the field equations of general relativity.
Sturm–Liouville theory. In mathematics and its applications, a Sturm–Liouville problem is a second-order linear ordinary differential equation of the form: for given functions , and , together with some boundary conditions at extreme values of . The goals of a given Sturm–Liouville problem are: To find the λ for which there exists a non ...
Cancellation is sometimes useful and desirable in numerical algorithms. For example, the 2Sum and Fast2Sum algorithms both rely on such cancellation after a rounding error in order to exactly compute what the error was in a floating-point addition operation as a floating-point number itself.
In fluid dynamics, the Darcy–Weisbach equation is an empirical equation that relates the head loss, or pressure loss, due to friction along a given length of pipe to the average velocity of the fluid flow for an incompressible fluid.
Inclination. 26.5° [1] SpaceX Starship flights. ← IFT-2. IFT-4 →. SpaceX Starship integrated flight test 3 ( IFT-3) was the third integrated flight test of the SpaceX Starship launch vehicle. SpaceX performed the flight test on March 14, 2024. [3] [4] Starship successfully completed a full-duration second stage burn, reaching the intended ...
Hearing loss is a partial or total inability to hear. Hearing loss may be present at birth or acquired at any time afterwards. Hearing loss may occur in one or both ears. In children, hearing problems can affect the ability to acquire spoken language, and in adults it can create difficulties with social interaction and at work.
In machine learning and mathematical optimization, loss functions for classification are computationally feasible loss functions representing the price paid for inaccuracy of predictions in classification problems (problems of identifying which category a particular observation belongs to).