Pertanyaan yang diberi tag engineering-statistics

20
Apa nilai yang benar untuk presisi dan mengingat dalam kasus tepi?

Presisi didefinisikan sebagai: p = true positives / (true positives + false positives) Apakah benar bahwa, sebagai true positivesdan false positivespendekatan 0, presisi mendekati 1? Pertanyaan yang sama untuk diingat: r = true positives / (true positives + false negatives) Saat ini saya...

precision-recall data-visualization logarithm references r networks data-visualization standard-deviation probability binomial negative-binomial r categorical-data aggregation plyr survival python regression r t-test bayesian logistic data-transformation confidence-interval t-test interpretation distributions data-visualization pca genetics r finance maximum probability standard-deviation probability r information-theory references computational-statistics computing references engineering-statistics t-test hypothesis-testing independence definition r censoring negative-binomial poisson-distribution variance mixed-model correlation intraclass-correlation aggregation interpretation effect-size hypothesis-testing goodness-of-fit normality-assumption small-sample distributions regression normality-assumption t-test anova confidence-interval z-statistic finance hypothesis-testing mean model-selection information-geometry bayesian frequentist terminology type-i-and-ii-errors cross-validation smoothing splines data-transformation normality-assumption variance-stabilizing r spss stata python correlation logistic logit link-function regression predictor pca factor-analysis r bayesian maximum-likelihood mcmc conditional-probability statistical-significance chi-squared proportion estimation error shrinkage application steins-phenomenon
9
Hitung kurva ROC untuk data

Jadi, saya memiliki 16 percobaan di mana saya mencoba untuk mengotentikasi seseorang dari sifat biometrik menggunakan Hamming Distance. Ambang batas saya diatur ke 3.5. Data saya di bawah dan hanya percobaan 1 yang Benar-Benar Positif: Trial Hamming Distance 1 0.34 2 0.37 3 0.34 4 0.29 5 0.55 6...

mathematical-statistics roc classification cross-validation pac-learning r anova survival hazard machine-learning data-mining hypothesis-testing regression random-variable non-independent normal-distribution approximation central-limit-theorem interpolation splines distributions kernel-smoothing r data-visualization ggplot2 distributions binomial random-variable poisson-distribution simulation kalman-filter regression lasso regularization lme4-nlme model-selection aic r mcmc dlm particle-filter r panel-data multilevel-analysis model-selection entropy graphical-model r distributions quantiles qq-plot svm matlab regression lasso regularization entropy inference r distributions dataset algorithms matrix-decomposition regression modeling interaction regularization expected-value exponential gamma-distribution mcmc gibbs probability self-study normality-assumption naive-bayes bayes-optimal-classifier standard-deviation classification optimization control-chart engineering-statistics regression lasso regularization regression references lasso regularization elastic-net r distributions aggregation clustering algorithms regression correlation modeling distributions time-series standard-deviation goodness-of-fit hypothesis-testing statistical-significance sample binary-data estimation random-variable interpolation distributions probability chi-squared predictor outliers regression modeling interaction
8
Diberikan diagram kontrol yang menunjukkan rata-rata dan batas kontrol atas / bawah, bagaimana cara saya mengetahui apakah penyebab poin di luar kendali dapat ditentukan atau tidak?

Saya diberi 15 poin. Batas kontrol ada di +/- 3 . Poin 1, 4, 5, 6, 7, 8, 9, 10, 11, 13, dan 15 berada dalam batas kontrol. Poin 2, 3, 12, dan 14 berada di luar batas kontrol, dengan 2 berada di bawah batas kontrol yang lebih rendah dan 3, 12, dan 14 berada di atas batas kontrol

control-chart engineering-statistics