What's the difference between estimator and jackknife?
Estimator
Definition:
(n.) One who estimates or values; a valuer.
Example Sentences:
(1) Changes in cardiac adenosine triphosphate (ATP), phosphocreatine (PCr) and inorganic phosphate (Pi) were followed and intracellular pH (pHi) was estimated from the chemical shift of Pi.
(2) Estimations of the degree of incorporation of 14C from the radioactive labeled carbohydrate into the glycerol and fatty acid moieties were carried out.
(3) We conclude that the SHBG concentration strongly affects this estimation.
(4) In this review, we demonstrate that serum creatinine does not provide an adequate estimate of glomerular filtration rate (GFR), and contrary to recent teachings, that the slope of the reciprocal of serum creatinine vs time does not permit an accurate assessment of the rate of progression of renal disease.
(5) The models are applied to estimate the demand for tobacco products in Finland.
(6) Estimates of the risk probability for each dose level and sacrifice time are found utilizing the sample likelihood as the posterior density.
(7) Estimates of potential for gastrointestinal side effects using the rat enteropooling assay and in vivo monkey effects indicate that diarrhea will be substantially reduced with retention of uterine stimulating potency.
(8) The ED50 and ED95 of mivacurium in each group were estimated from linear regression plots of log dose vs probit of maximum percentage depression of neuromuscular function.
(9) We are pursuing legal action because there are still so many unanswered questions about the viability of Shenhua’s proposed koala plan and it seems at this point the plan does not guarantee the survival of the estimated 262 koalas currently living where Shenhua wants to put its mine,” said Ranclaud.
(10) To estimate the age of onset of these differences, and to assess their relationship to abdominal and gluteal adipocyte size, we measured adiposity, adipocyte size, and glucose and insulin concentrations during a glucose tolerance test in lean (less than 20% body fat), prepubertal children from each race.
(11) The level of significance of the statistical estimate of the change in the number of phonoreactive units (its increase due to deprivation) amounts to 92%.
(12) Variables included an ego-delay measure obtained from temporal estimations, perceptions of temporal dominance and relatedness obtained from Cottle's Circles Test, Ss' ages, and a measure of long-term posthospital adjustment.
(13) The molecular weight of antigen RFB2 was estimated to be approximately 85,000 daltons based on the results of gel filtration on Sepharose CL-6B.
(14) The radius is estimated to be around 1.7 nm, which shows a moderate degree of hydration.
(15) Another important factor, however, seems to be that patients, their families, doctors and employers estimate capacity of performance on account of the specific illness, thus calling for intensified efforts toward rehabilitation.
(16) The estimated DNA compaction ratio (approximately 3-fold) is consistent with a significant degree of nucleosome unfolding in the hyperstimulated BR genes.
(17) The Pan American Health Organization, the Americas arm of the World Health Organization, estimated the deaths from Tuesday's magnitude 7 quake at between 50,000 and 100,000, but said that was a "huge guess".
(18) The risk of recurrence and progression in 170 patients presenting with pTa urothelial tumours of the bladder has been estimated so that follow-up can be rationalised.
(19) Serum gamma glutamyl transferase (gammaGT) and alkaline phosphatase (ALP) activities have been estimated in 49 epileptic patients taking anticonvulsant drugs.
(20) The effect of these drugs was estimated from the cell growth curve and DNA histogram determined by flow cytometry.
Jackknife
Definition:
(n.) A large, strong clasp knife for the pocket; a pocket knife.
Example Sentences:
(1) The efficacy of subarachnoid injection of 8 ml lidocaine 0.5% was assessed in ten outpatients having perirectal surgery in the jackknife position.
(2) We examined the hemodynamic changes occurring with prone jackknife positioning during colorectal surgery.
(3) This score has been tested by the Jackknife method on the same sample (94% of well-classified patients), then validated on the other patients.
(4) Seventy-nine percent of patients in the study group were classified correctly when using the jackknife method.
(5) The jackknife is based on the observation of the estimator for subsamples, generally of size n-1, obtained from the original sample.
(6) All patients underwent colectomy, mucosal proctectomy, and ileoanal anastomosis in the jackknife position with complete removal of the rectoanal columnar mucosa above the dentate line (IAA) through the anus.
(7) Overall with these features 65.6% correct jackknifed classification of the 32 cases could be achieved.
(8) When the jackknife classification test was applied to this model, we could discriminate with 81% accuracy between the 4 groups of tissue studied.
(9) Adding the demographic variable "education level" to the model raises the jackknifed classification accuracy to 91.2%, yielding only seven misclassifications in the total sample of 80 volunteers.
(10) As a result of these experiments and theoretical considerations the jackknife version of the maximum likelihood estimation procedure is proposed as the statistical procedure of choice.
(11) We introduce modifications of previously published estimators appropriate for measurement of reliability in the case of stratified sampling frames and we interpret these measures in view of standard errors computed using the jackknife.
(12) A classification rule was established including these two measurements and its diagnostic performance evaluated by a jackknifed method amounted .83%.
(13) The results obtained by the various models were tested for robustness by jackknife validation ("leave n out" method).
(14) After discussing the history and theory of both the bootstrap and the jackknife, we illustrate the use of the bootstrap in the statistical analysis of correlation coefficients and the general linear model.
(15) The initial mucosectomy through the anus in the prone jackknife position is useful for this purpose.
(16) Confidence intervals for these indices were constructed using a jackknife procedure, and significance tests were performed by pairing selected indices.
(17) The percent correct classifications of flight segments using the jackknife procedure were 69% and 68%, respectively.
(18) Bias is reduced by means of a jackknifing procedure.
(19) It is similar to the well-known jackknife of Quenouille and Tukey.
(20) Motorways are also in trouble, with the Forth road bridge and Dartford crossing both closed, part of the M3 shut and the A1 northbound at Catterick in North Yorkshire blocked by two jackknifed lorries.