All Stories

  1. Detection of Internet‐wide traffic redirection attacks using machine learning techniques

    Article • IET Networks, May 2023, the Institution of Engineering and Technology (the IET)

    António Pacheco

  2. Statistical inference in queueing networks with probing information

    Article • Queueing Systems, April 2022, Springer Science + Business Media

    António Pacheco

  3. Association measures for interval variables

    Article • Advances in Data Analysis and Classification, July 2021, Springer Science + Business Media

    António Pacheco

  4. Distribution of the number of losses in busy-periods of oscillating MX...

    Article • Computers & Operations Research, May 2021, Elsevier

    António Pacheco

  5. Misleading signals in joint schemes for the mean vector and covariance matrix

    Article • Quality and Reliability Engineering International, January 2020, Wiley

    António Pacheco

  6. Numbers of Served and Lost Customers in Busy-Periods of M/M/1/n Systems with Balking

    Article • January 2020, Springer Science + Business Media

    António Pacheco

  7. Comparing Short and Long-Memory Charts to Monitor the Traffic Intensity of Single Server Queues

    Article • Stochastics and Quality Control, June 2019, De Gruyter

    Prof. Manuel C. Morais, António Pacheco

  8. Detecting Internet-Scale Traffic Redirection Attacks Using Latent Class Models

    Article • April 2019, Springer Science + Business Media

    António Pacheco

  9. Theoretical foundations of forward feature selection methods based on mutual information

    Article • Neurocomputing, January 2019, Elsevier

    António Pacheco

  10. Comparison of joint control schemes for multivariate normal i.i.d. output

    Article • AStA Advances in Statistical Analysis, June 2018, Springer Science + Business Media

    António Pacheco

  11. Comparing Short-Memory Charts to Monitor the Traffic Intensity of Single Server Queues

    Article • Stochastics and Quality Control, June 2018, De Gruyter

    António Pacheco

  12. A Model for Pretimed Signalized Urban Traffic

    Article • Transportation Science, August 2017, INFORMS

    Dr Paula P Milheiro-Oliveira, Dr Maria L Simões, António Pacheco

  13. Extracting Information from Interval Data Using Symbolic Principal Component Analysis

    Article • Austrian Journal of Statistics, April 2017, Austrian Statistical Society

    António Pacheco

  14. Theoretical evaluation of feature selection methods based on mutual information

    Article • Neurocomputing, February 2017, Elsevier

    António Pacheco

  15. Application of a Particular Class of Markov Chains in the Assessment of Semi-actuated Signalized Intersections

    Article • January 2017, Springer Science + Business Media

    António Pacheco, Dr Paula P Milheiro-Oliveira

  16. On stochastic ordering and control charts for traffic intensity

    Article • Sequential Analysis, October 2016, Taylor & Francis

    António Pacheco

  17. Estimation of the traffic intensity in a piecewise-stationary Mt/Gt/1 queue with probing

    Article • ACM SIGMETRICS Performance Evaluation Review, September 2016, ACM (Association for Computing Machinery)

    António Pacheco

  18. A simple analysis of system characteristics in the batch service queue with infinite-buffer and Markovian service process using the roots method:GI/C-MSP(a,b)/1/∞

    Article • RAIRO - Operations Research, May 2016, EDP Sciences

    António Pacheco

  19. On the Blocking Probability and Loss Rates in Nonpreemptive Oscillating Queueing Systems

    Article • January 2016, Springer Science + Business Media

    António Pacheco

  20. A simple analysis of the batch arrival queue with infinite-buffer and Markovian service process using roots method: $$ GI ^{[X]}/C$$ ...

    Article • Annals of Operations Research, September 2015, Springer Science + Business Media

    António Pacheco

  21. Moments of losses during busy-periods of regular and nonpreemptive oscillating $$M^X/G/1/n$$ ...

    Article • Annals of Operations Research, May 2015, Springer Science + Business Media

    António Pacheco

  22. Analytic and computational analysis of the discrete-time GI/D-MSP/1 queue using roots

    Article • Computers & Operations Research, April 2015, Elsevier

    António Pacheco

  23. On the misleading signals in simultaneous schemes for the mean vector and covariance matrix of multivariate i.i.d. output

    Article • Statistical Papers, February 2015, Springer Science + Business Media

    António Pacheco

  24. Hop Count Distributions of the Furthest and Nearest Distance Routing Protocols in Mobile Ad Hoc Networks

    Article • SIAM Journal on Applied Mathematics, January 2015, Society for Industrial & Applied Mathematics (SIAM)

    António Pacheco

  25. Strategies to Reduce the Probability of a Misleading Signal

    Article • January 2015, Springer Science + Business Media

    António Pacheco

  26. Analysis of B M A P/M S P/1 Queue

    Article • Methodology And Computing In Applied Probability, November 2014, Springer Science + Business Media

    António Pacheco

  27. Probing a M/G/1 queue with general input and service times

    Article • ACM SIGMETRICS Performance Evaluation Review, January 2014, ACM (Association for Computing Machinery)

    António Pacheco

  28. Nearest Neighbor Connectivity in Two-Dimensional Multihop MANETs

    Article • January 2014, Springer Science + Business Media

    António Pacheco

  29. Kalman Filter Sensitivity Evaluation With Orthogonal and J-Orthogonal Transformations

    Article • IEEE Transactions on Automatic Control, July 2013, Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  30. Stochastic Ordering in the Qualitative Assessment of the Performance of Simultaneous Schemes for Bivariate Processes

    Article • Sequential Analysis, April 2013, Taylor & Francis

    António Pacheco

  31. Distribution of the Number of Losses in Busy-Periods of $${M}^{X}/G/1/n$$ Systems

    Article • January 2013, Springer Science + Business Media

    António Pacheco

  32. Misleading Signals in Simultaneous Residual Schemes for the Process Mean and Variance of AR(1) Processes: A Stochastic Ordering Approach

    Article • January 2013, Springer Science + Business Media

    António Pacheco

  33. Misleading Signals in Simultaneous Schemes for the Mean Vector and Covariance Matrix of a Bivariate Process

    Article • September 2012, Springer Science + Business Media

    António Pacheco

  34. Modelling the Duration of Multihop Paths in Mobile Ad Hoc Networks

    Article • September 2012, Springer Science + Business Media

    António Pacheco

  35. ANALYTICALLY EXPLICIT RESULTS FOR THE GI/C-MSP/1/∞ QUEUEING SYSTEM USING ROOTS

    Article • Probability in the Engineering and Informational Sciences, April 2012, Cambridge University Press

    António Pacheco

  36. Robust feature selection and robust PCA for internet traffic anomaly detection

    Article • March 2012, Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  37. A short note on the queueing system

    Article • Statistics & Probability Letters, February 2012, Elsevier

    António Pacheco

  38. A Note on the Aging Properties of the Run Length of Markov-Type Control Charts

    Article • Sequential Analysis, January 2012, Taylor & Francis

    António Pacheco

  39. Performance evaluation of airport taxi services provision

    Article • International Journal of Mathematical Modelling and Numerical Optimisation, January 2011, Inderscience Publishers

    António Pacheco

  40. Modeling self-similar traffic over multiple time scales based on hierarchical Markovian and L-System models

    Article • Computer Communications, November 2010, Elsevier

    António Pacheco

  41. An analytical framework to infer multihop path reliability in MANETs

    Article • ACM SIGMETRICS Performance Evaluation Review, June 2010, ACM (Association for Computing Machinery)

    António Pacheco

  42. Detection of Outliers Using Robust Principal Component Analysis: A Simulation Study

    Article • January 2010, Springer Science + Business Media

    António Pacheco

  43. Misleading Signals in Simultaneous Residual Schemes for the Mean and Variance of a Stationary Process

    Article • Communication in Statistics- Theory and Methods, August 2009, Taylor & Francis

    António Pacheco

  44. ANALYSIS OF FINITE OSCILLATING GIX/M(m)//N QUEUEING SYSTEMS

    Article • April 2009, World Scientific Pub Co Pte Lt

    António Pacheco

  45. Level-Crossing Ordering of M∕M∕c Retrial Queues

    Article • January 2009, American Institute of Physics

    António Pacheco

  46. EWMA Charts for Multivariate Output: Some Stochastic Ordering Results

    Article • Communication in Statistics- Theory and Methods, June 2008, Taylor & Francis

    António Pacheco

  47. On the minimum hop count and connectivity in one-dimensional ad hoc wireless networks

    Article • Telecommunication Systems, June 2008, Springer Science + Business Media

    António Pacheco

  48. MOMENTS OF THE DURATION OF BUSY PERIODS OF MX/G/1/n SYSTEMS

    Article • Probability in the Engineering and Informational Sciences, May 2008, Cambridge University Press

    António Pacheco

  49. Statistical models to predict electricity prices

    Article • May 2008, Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  50. Accurate resource estimation for generalized VoIP sources

    Article • Telecommunication Systems, March 2008, Springer Science + Business Media

    António Pacheco

  51. Consecutive customer losses in regular and oscillating M X /G/1/n systems

    Article • Queueing Systems, February 2008, Springer Science + Business Media

    António Pacheco

  52. Consecutive customer losses in oscillating GI X /M//n systems with state dependent services rates

    Article • Annals of Operations Research, January 2008, Springer Science + Business Media

    António Pacheco

  53. Analysis of GI X /M(n)//N systems with stochastic customer acceptance policy

    Article • Queueing Systems, January 2008, Springer Science + Business Media

    António Pacheco

  54. Modeling IP Traffic Behavior through Markovian Models

    Article • January 2008, IGI Global

    António Pacheco

  55. Markov-Modulated Processes and Semiregenerative Phenomena

    Article • January 2008, World Scientific Pub Co Pte Lt

    António Pacheco

  56. Mapping of quantitative trait loci using the skew-normal distribution

    Article • Journal of Zhejiang University SCIENCE B, October 2007, Journal of Zhejiang University SCIENCE

    António Pacheco

  57. Cluster Analysis of Internet Users Based on Hourly Traffic Utilization

    Article • IEICE Transactions on Communications, July 2007, Institute of Electronics, Information and Communications Engineers (IEICE)

    António Pacheco

  58. Shewhart Schemes with Variable Sampling Intervals Revisited

    Article • Sequential Analysis, June 2007, Taylor & Francis

    António Pacheco

  59. AN EFFICIENT APPROACH TO ANALYZE FINITE BUFFER QUEUES WITH GENERALIZED PARETO INTERARRIVAL TIMES AND EXPONENTIAL SERVICE

    Article • January 2007, World Scientific Pub Co Pte Lt

    António Pacheco

  60. BURSTS AND GAPS OF MARKOV RENEWAL ARRIVAL PROCESSES

    Article • January 2007, World Scientific Pub Co Pte Lt

    António Pacheco

  61. Comparison of level-crossing times for Markov and semi-Markov processes

    Article • Statistics & Probability Letters, January 2007, Elsevier

    António Pacheco

  62. Analysis of GI/M/s/c queues using uniformisation

    Article • Computers & Mathematics with Applications, January 2006, Elsevier

    António Pacheco

  63. Consecutive customer loss probabilities in M/G/1/n and GI/M(m)//n systems

    Article • January 2006, ACM (Association for Computing Machinery)

    António Pacheco

  64. Model checking expected time and expected reward formulae with random time bounds

    Article • Computers & Mathematics with Applications, January 2006, Elsevier

    António Pacheco

  65. Combined CUSUM–Shewhart Schemes for Binomial Data

    Article • Economic Quality Control, January 2006, De Gruyter

    António Pacheco

  66. Level-crossing ordering of semi-Markov processes and markov chains

    Article • Journal of Applied Probability, December 2005, Cambridge University Press

    António Pacheco

  67. Level Crossing Ordering of Skip-Free-to-the-Right Continuous-Time Markov Chains

    Article • Journal of Applied Probability, March 2005, Cambridge University Press

    António Pacheco

  68. Functionals of Markovian Branching D-BMAPS

    Article • Stochastic Models, January 2005, Taylor & Francis

    António Pacheco

  69. Using neural networks to classify Internet users

    Article • January 2005, Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  70. A note on the ageing character of the run length of Markov-type quality-control schemes

    Article • Journal of Applied Probability, December 2004, Cambridge University Press

    António Pacheco

  71. Modeling IP traffic: joint characterization of packet arrivals and packet sizes using BMAPs

    Article • Computer Networks, February 2004, Elsevier

    António Pacheco

  72. A Note on Stochastic Ordering Criteria in SPC for the Case of Correlated Output

    Article • January 2004, Springer Science + Business Media

    António Pacheco

  73. Multi-time-Scale Traffic Modeling Using Markovian and L-Systems Models

    Article • January 2004, Springer Science + Business Media

    António Pacheco

  74. Categorical foundations for randomly timed automata

    Article • Theoretical Computer Science, November 2003, Elsevier

    António Pacheco

  75. Markovian approach for modeling IP traffic behavior on several time scales

    Article • August 2003, SPIE

    António Pacheco

  76. Article • Telecommunication Systems, January 2003, Springer Science + Business Media

    António Pacheco

  77. Article • Telecommunication Systems, January 2003, Springer Science + Business Media

    António Pacheco

  78. Modeling Self-similar Traffic through Markov Modulated Poisson Processes over Multiple Time Scales

    Article • January 2003, Springer Science + Business Media

    António Pacheco

  79. SOJOURN AND PASSAGE TIMES IN MARKOV CHAINS

    Article • June 2002, World Scientific Pub Co Pte Lt

    António Pacheco

  80. Article • Queueing Systems, January 2002, Springer Science + Business Media

    António Pacheco

  81. An integrated traffic model for multimedia wireless networks

    Article • Computer Networks, January 2002, Elsevier

    António Pacheco

  82. Article • Annals of Mathematics and Artificial Intelligence, January 2001, Springer Science + Business Media

    António Pacheco

  83. On the performance of combinedEWMAschemes forμandσ: a markovian approach

    Article • Communications in Statistics - Simulation and Computation, January 2000, Taylor & Francis

    António Pacheco

  84. Two stochastic properties of one‐sided exponentially weighted moving average control charts∗

    Article • Communications in Statistics - Simulation and Computation, January 1998, Taylor & Francis

    António Pacheco

  85. A storage model for data communication systems

    Article • Queueing Systems, March 1995, Springer Science + Business Media

    António Pacheco

  86. A Storage Model for Data Communication Systems

    Article • Theory of Probability and Its Applications, January 1995, Society for Industrial & Applied Mathematics (SIAM)

    António Pacheco

  87. Second-order properties of the loss probability inM/M/s/s +c systems

    Article • Queueing Systems, March 1994, Springer Science + Business Media

    António Pacheco

  88. Some properties of the delay probability inM/M/s/s +c systems

    Article • Queueing Systems, March 1994, Springer Science + Business Media

    António Pacheco

  89. Decomposition of network flows with applications to cluster analysis of internet access traffic

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  90. Sojourn time of elastic flows under perturbation of unresponsive traffic

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  91. Classification of internet users using discriminant analysis and neural networks

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  92. Simulation of semi-Markov processes and Markov chains ordered in level crossing

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco

  93. Some Results for GIX/M/s/c Queues

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    António Pacheco