Computational statistics | Resampling (statistics)
In statistics, the jackknife (jackknife cross-validation) is a cross-validation technique and, therefore, a form of resampling.It is especially useful for bias and variance estimation. The jackknife pre-dates other common resampling methods such as the bootstrap. Given a sample of size , a jackknife estimator can be built by aggregating the parameter estimates from each subsample of size obtained by omitting one observation. The jackknife technique was developed by Maurice Quenouille (1924–1973) from 1949 and refined in 1956. John Tukey expanded on the technique in 1958 and proposed the name "jackknife" because, like a physical jack-knife (a compact folding knife), it is a rough-and-ready tool that can improvise a solution for a variety of problems even though specific problems may be more efficiently solved with a purpose-designed tool. The jackknife is a linear approximation of the bootstrap. (Wikipedia).
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This guide will give you a good idea of how to carve jack-o'-lanterns in a variety of sizes and styles using a range of techniques.
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This guide will give you a good idea of how to carve jack-o'-lanterns in a variety of sizes and styles using a range of techniques.
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This guide will give you a good idea of how to carve jack-o'-lanterns in a variety of sizes and styles using a range of techniques.
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This guide will give you a good idea of how to carve jack-o'-lanterns in a variety of sizes and styles using a range of techniques.
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