Search

1. Testing for superiority between two variance functions: (Publication); This paper focuses on the problem of testing the null hypothesis that the variance functions of two populations are equal versus one-sided alternatives under a general nonparametric heteroscedastic regression ...; Created on 16 September 2019
2. The role of the p-value in the multitesting problem: (Publication); Modern science frequently involves the analysis of large amount of quantitative information and the simultaneous testing of thousands or even hundreds of thousands null hypotheses. In this context, sometimes, ...; Created on 22 November 2019
3. Structural, Dermal and Ungual Characteristics of the Foot in Patients with Type II Diabetes: (Publication); Background and Objectives: Diabetes is a chronic and metabolic disease, considered as an important public health problem. The objective of this study was to determine the prevalence of podiatric pathology ...; Created on 20 November 2019
4. Nontransferable utility bankruptcy games: (Publication); In this paper, we analyze bankruptcy problems with nontransferable utility (NTU) from a game theoretical perspective by redefining corresponding NTU-bankruptcy games in a tailor-made way. It is shown that ...; Created on 25 September 2019
5. Late HIV Diagnosis but Earlier Antiretroviral Treatment Initiation in Northwest Spain: Impact of Current Treatment Guidelines: (Publication); Background: Current HIV treatment guidelines recommend antiretroviral treatment (ART) initiation for all HIV-infected individuals regardless of CD4 count. This study evaluates the immunological and virological ...; Created on 24 September 2019
6. A two-sample test for the equality of univariate marginal distributions for high-dimensional data: (Publication); A recurring theme in modern statistics is dealing with high-dimensional data whose main feature is a large number, p, of variables but a small sample size. In this context our aim is to address the problem ...; Created on 23 September 2019
7. Improving the biomarker diagnostic capacity via functional transformations: (Publication); The use of the area under the receiver-operating characteristic, ROC, curve (AUC) as an index of diagnostic accuracy is overwhelming in fields such as biomedical science and machine learning. It seems ...; Created on 22 August 2019
8. An instrumental variable procedure for estimating Cox models with non‐proportional hazards in the presence of unmeasured confounding: (Publication); Two‐stage instrumental variable methods are commonly used for estimating average causal effects in the presence of an unmeasured confounder. In the context of the proportional hazard Cox regression models, ...; Created on 22 August 2019
9. A model specification test for the variance function in nonparametric regression: (Publication); The problem of testing for the parametric form of the conditional variance is considered in a fully nonparametric regression model. A test statistic based on a weighted L2-distance between the empirical ...; Created on 09 October 2018
10. Bootstrap-based testing approaches for the assessment of the diagnostic accuracy of biomarkers subject to a limit of detection: (Publication); Assessment of the diagnostic accuracy of biomarkers through receiver operating characteristic curve analysis frequently involves a limit of detection imposed by the laboratory analytical system precision. ...; Created on 09 October 2018
11. Sustainable allocation of greenhouse gas emission permits for firms with Leontief technologies: (Publication); In this paper we deal with production situations where a cap or limit to the amount of greenhouse gas emissions permitted is imposed. Fixing a tax for each ton of pollutant emitted is also considered. ...; Created on 10 October 2018
12. A Diagnostic Test Approach for Multitesting Problems: (Publication); In the last decades, multiple-testing problems have received much attention. Many different methods have been proposed in order to deal with this relevant issue. Most of them are focused on controlling ...; Created on 10 October 2018
13. Inventorymodel: an R Package for Centralized Inventory Problems: (Publication); Inventory management of goods is an integral part of logistics systems; common to various economic sectors such as industry, agriculture and trade; and independent of production volume. In general, as ...; Created on 03 October 2018
14. MUL plus DO: a multicomponent index for the quick diagnosis of peritonitis in peritoneal dialysis patients: (Publication); Peritoneal infection is a common problem that has a negative impact on the survival of patients and the technique. The early administration of peritoneal infection treatment reduces complications. The ...; Created on 01 October 2018
15. Survival analysis with delayed entry in selected families with application to human longevity: (Publication); In the field of aging research, family-based sampling study designs are commonly used to study the lifespans of long-lived family members. However, the specific sampling procedure should be carefully taken ...; Created on 22 May 2018
16. Smooth time-dependent receiver operating characteristic curve estimators: (Publication); The receiver operating characteristic curve is a popular graphical method often used to study the diagnostic capacity of continuous (bio)markers. When the considered outcome is a time-dependent variable, ...; Created on 22 May 2018
17. On the estimation of the characteristic function in finite populations with applications: (Publication); This paper studies the estimation of the characteristic function of a finite population. Specifically, the weak convergence of the finite population empirical characteristic process is studied. Under suitable ...; Created on 14 May 2018
18. Geographically Weighted Principal Components Analysis to assess diffuse pollution sources of soil heavy metal: Application to rough mountain areas in Northwest Spain.: (Publication); Heavy metal pollution can result in the degradation of the soil, air and water bodies' quality affecting the health of all living organism. We analyze the spatial distribution of the concentrations of ...; Created on 24 January 2018
19. Determining optimum wavelengths for leaf water content estimation from reflectance: A distance correlation approach: (Publication); This paper proposes a method to estimate leaf water content from reflectance in four commercial vineyard varieties by estimating the local maxima of a distance correlation function. First, it applies four ...; Created on 24 January 2018
20. On coalition formation in a non-convex multi-agent inventory problem: (Publication); A multi-agent inventory problem is a situation in which several agents face individual inventory problems and can coordinate their orders to reduce costs. This paper analyses a multi-agent inventory problem ...; Created on 18 September 2017
21. Hypothesis test on response mean with inequality constraints under data missing when covariables are present: (Publication); This paper addresses the problem of hypothesis test on response mean with various inequality constraints in the presence of covariates when response data are missing at random. The various hypotheses include ...; Created on 22 May 2018
22. On the 1-nucleolus: (Publication); This paper analyzes the 1-nucleolus and, in particular, its relation to the nucleolus. It is seen that, contrary to the nucleolus, the 1-nucleolus can be computed in polynomial time due to a characterization ...; Created on 18 September 2017
23. Fully non-parametric receiver operating characteristic curve estimation for random-effects meta-analysis: (Publication); Meta-analyses, broadly defined as the quantitative review and synthesis of the results of related but independent comparable studies, allow to know the state of the art of one considered topic. Since the ...; Created on 18 September 2017
24. Minimum distance estimators for count data based on the probability generating function with applications: (Publication); This paper studies properties of parameter estimators obtained by minimizing a distance between the empirical probability generating function and the probability generating function of a model for count ...; Created on 18 September 2017
25. A study of risks of Bayes estimators in the generalized half-logistic distribution for progressively type-II censored samples: (Publication); The problem of estimation of the shape parameter in a generalized half-logistic distribution for progressively type-II censored samples is of interest in reliability and survival analysis. In this paper, ...; Created on 18 September 2017
26. Fast tests for the two-sample problem based on the empirical characteristic function: (Publication); A class of tests for the two-sample problem whose test statistic is an L2 norm of the difference of the empirical characteristic functions of the samples is considered. The null distribution can be estimated ...; Created on 18 September 2017
27. A class of tests for the two-sample problem for count data: (Publication); A class of tests for the two-sample problem for count data whose test statistic is an L2-norm of the difference between the empirical probability generating functions associated with each sample is considered. ...; Created on 18 September 2017
28. On the externality-free Shapley–Shubik index: (Publication); We address the problem of extending the Shapley–Shubik index to the class of simple games with externalities introduced in Alonso-Meijide et al. (2017). On the one hand, we provide bounds for any efficient, ...; Created on 18 September 2017
29. Testing spatial heterogeneity in geographically weighted principal components analysis: (Publication); We propose a method to evaluate the existence of spatial variability in the covariance structure in a geographically weighted principal components analysis (GWPCA). The method, that is extensive to locally ...; Created on 18 September 2017
30. Monotonicity implications for the ranking of rules for airport problems: (Publication); The airport problem is a classic cost allocation problem that has been widely studied. Several rules have been proposed to divide the total cost among the agents, attending to the characteristics of the ...; Created on 18 September 2017
31. Survival analysis with delayed entry in selected families with application to human longevity: (Publication); In the field of aging research, family-based sampling study designs are commonly used to study the lifespans of long-lived family members. However, the specific sampling procedure should be carefully taken ...; Created on 18 September 2017
32. Kaplan-Meier estimator in competing risk contexts: (Publication); Survival analysis has become in a common procedure in biomedical researches. Conventionally, the well-known nonparametric Kaplan-Meier (KM) estimator is used in order to approximate the real survivor curve. ...; Created on 18 September 2017
33. Fourier methods for model selection: (Publication); A test approach to the model selection problem based on characteristic functions (CFs) is proposed. The scheme is close to that proposed by Vuong (Econometrica 57:257–306, 1989), which is based on comparing ...; Created on 04 November 2016
34. Airport games: The core and its center: (Publication); An approach to define a rule for an airport problem is to associate to each problem a cooperative game, an airport game, and using game theory to come out with a solution. In this paper, we study the rule ...; Created on 04 November 2016
35. Robust testing for superiority between two regression curves: (Publication); The problem of testing the null hypothesis that the regression functions of two populations are equal versus one-sided alternatives under a general nonparametric homoscedastic regression model is considered. ...; Created on 04 November 2016
36. A precedence constraint value revisited: (Publication); This paper discusses games where cooperation is restricted by a hierarchical structure. The model assumes that there is a hierarchy between certain coalitions given by a partition. Face games (González-Díaz ...; Created on 04 November 2016
37. Nonparametric regression with doubly truncated data: (Publication); Nonparametric regression with a doubly truncated response is introduced. Local constant and local linear kernel-type estimators are proposed. Asymptotic expressions for the bias and the variance of the ...; Created on 23 October 2016
38. A case-deletion diagnostic for penalized calibration estimators and BLUP under linear mixed models in survey sampling: (Publication); The penalized calibration technique in survey sampling combines usual calibration and soft calibration by introducing a penalty term. Certain relevant estimates in survey sampling can be considered as ...; Created on 31 August 2017
39. The least square nucleolus is a normalized Banzhaf value: (Publication); In this note we study a truncated additive normalization of the Banzhaf value. We are able to show that it corresponds to the least square nucleolus (LS-nucleolus), which was originally introduced as the ...; Created on 31 August 2017
40. Centralized inventory in a farming community: (Publication); A centralized inventory problem is a situation in which several agents face individual inventory problems and make an agreement to coordinate their orders with the objective of reducing costs. In this ...; Created on 04 September 2017
41. Studying the bandwidth in k-sample smooth tests: (Publication); In this paper, the problem of bandwidth choice in smooth k-sample tests is considered. Three different bootstrap methods are discussed and implemented. All the methods persecute the bandwidth leading to ...; Created on 04 September 2017
42. Density comparison for independent and right censored samples via kernel smoothing: (Publication); In this paper the problem of comparing k density functions from survival data is considered. Two non-parametric tests based on (two different) generalizations of the L1 measure are adapted to the censored ...; Created on 04 September 2017
43. Cost allocation in inventory transportation systems: (Publication); In this paper, we deal with the cost allocation problem arising in an inventory transportation system with a single item and multiple agents that place joint orders using an EOQ policy. In our problem, ...; Created on 08 September 2017
44. A bankruptcy approach to the core cover: (Publication); In this paper we establish a relationship between the core cover of a compromise admissible game and the core of a particular bankruptcy game: the core cover of a compromise admissible game is, indeed, ...; Created on 08 September 2017
45. On the Statistical Properties of SGoF Multitesting Method: (Publication); In this paper we establish the statistical properties of SGoF multitesting method under a mixture model. It is assumed that the available set of p-values is statistically independent. Special attention ...; Created on 10 January 2019
46. A Simulation Study on the Impact of Strong Dependence in High-Dimensional Multiple-Testing I: The Case without Effects: (Publication); When working with high-dimensional biological data the so-called multiple hypothesis testing problem emerges. That is, when many separate tests are performed, several will be significant by chance provoking ...; Created on 10 January 2019
47. Selecting variables in regression models. A new approach to the prediction of time series of SO2: (Publication); A question that tends to arise in multiple regression models (with p variables), and that has not been totally satisfactory solved, is to determine the best subset or subsets of q q≤p) predictors which ...; Created on 21 September 2017
48. Selecting variables in regression models. A new approach to the prediction of time series of SO2: (Publication); A question that tends to arise in multiple regression models (with p variables), and that has not been totally satisfactory solved, is to determine the best subset or subsets of q q≤p) predictors which ...; Created on 08 September 2017
49. Proportionate flow shop games: (Publication); In a proportionate flow shop problem several jobs have to be processed through a fixed sequence of machines and the processing time of each job is equal on all machines. By identifying jobs with agents ...; Created on 06 February 2019