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Department of Computer Science
Studenten im Sommer auf dem Campus Nord, rote Zahnräder im Hintergrund © Roland Baege​/​TU Dortmund

Publikationen

  • Peter Buchholz, Jan Kriege, Dimitri Scheftelowitsch:
    Model Checking Stochastic Automata for Dependability and Performance Measures
    Proc. of the 44th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), 2014.
  • Peter Buchholz, Jan Kriege, Iryna Felko:
    Input Modeling with Phase Type Distributions and Markov Models - Theory and Applications
    SpringerBriefs in Mathematics, 2014.
  • Peter Buchholz, Jan Kriege:
    Markov Modeling of Availability and Unavailability Data
    Proc. of the Tenth European Dependable Computing Conference (EDCC), 2014.
  • Jan Kriege, Peter Buchholz:
    PH and MAP Fitting with Aggregated Traffic Traces
    Proc. of the 17th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems and Dependability and Fault Tolerance (MMB & DFT 2014), Springer, 2014.
  • Peter Buchholz, Jan Kriege:
    Approximate aggregation of Markovian models using alternating least squares
    Performance Evaluation, Volume 73, 2014.
  • P. Buchholz, M. Telek.
    On Minimal Representation of Rational Arrival Processes
    Annals of Operations Research (Abstract in Proc. MCQR'2010).

  • P. Buchholz, M. Telek:
    Rational Automata Networks - A Non-Markovian Modeling Approach -
    INFORMS Journal on Computing 25 (1), 2013, 87-101.

  • P. Buchholz:
    Numerical Analysis of Rational Processes - Beyond Markov Chains -
    Performance Evaluation 70 (9) , 2013, 646-662.

  • P. Buchholz, I. Felko, J. Kriege:
    Transformation of Acyclic Phase Type Distributions for Correlation Fitting.
    20th International Conference on Analytical & Stochastic Modelling Techniques & Applications (AMSTA), Springer LNCS 7984, 2013, 96-111.

  • Jan Kriege:
    Modellierung korrelierter Eingabedaten für Simulationen
    Ausgezeichnete Informatikdissertationen 2012, GI Lecture Notes in Informatics (LNI), 2013.

  • P. Buchholz, M. Telek.
    Rational Processes Related to Communicating Markov Processes
    Journal of Applied Probability 49 (1), 2012, pp. 40-59.
  • J. Kriege, P. Buchholz:
    Traffic Modeling with a Combination of Phase-Type Distributions and ARMA Processes.
    WSC 2012
  • P. Buchholz, J. Kriege:
    Aggregation of Markovian Models - An Alternating Least Squares Approach.
    Proc. QEST 2012, IEEE Computer Society
  • Jan Kriege:
    Fitting Simulation Input Models for Correlated Traffic Data.
    Dissertation, TU Dortmund, 2012.
  • P. Buchholz, A. Horvath, M. Telek.
    Stochastic Petri Nets with low variation matrix exponentially distributed firing times
    Int. Journal of Performability Engineering 7 (5), 2011, pp. 441-454.
  • P. Buchholz, M. Telek
    Composition and Equivalence of Markovian and Non-Markovian Models
    In Proc. 8th Int. Conf. on Quantitative Evaluation of SysTems, (QEST'11), IEEE 2011, 213-222.
  • Jan Kriege, Peter Buchholz:
    Correlated Phase-type distributed Random Numbers as Input Models for Simulations
    Performance Evaluation, Volume 68, Issue 11, 2011.
  • Jan Kriege, Peter Buchholz:
    Simulating Stochastic Processes with OMNeT++
    Proc. of the 4th International OMNeT++ Workshop (OMNeT++ 2011), Barcelona, 2011.
  • F. Bause, G. Horvath:
    Fitting Markovian Arrival Processes by Incorporating Correlation into Phase Type Renewal Processes
    Proc. of the 7th International Conference on Quantitative Evaluation of SysTems (QEST) 2010,Williamsburg, Virginia, USA, September 15 - 18, 2010.
  • Falko Bause, Peter Buchholz, Jan Kriege:
    ProFiDo - The Processes Fitting Toolkit Dortmund
    Proc. of the 7th International Conference on Quantitative Evaluation of SysTems (QEST) 2010, Williamsburg, Virginia, USA, September 15 - 18, 2010.
  • Falko Bause, Philipp Gerloff, Jan Kriege:
    ProFiDo - A Toolkit for Fitting Input Models
    Proc. of the 15th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems and Dependability and Fault Tolerance (MMB & DFT 2010), Springer, 2010.
  • Levente Bodrog, Peter Buchholz, Jan Kriege, Miklos Telek:
    Canonical form based MAP(2) fitting
    Proc. of the 7th International Conference on Quantitative Evaluation of SysTems (QEST) 2010, Williamsburg, Virginia, USA, September 15 - 18, 2010.
  • Peter Buchholz, Peter Kemper, Jan Kriege:
    Multi Class Markovian Arrival Processes and Their Parameter Fitting
    Performance Evaluation, Volume 67, Issue 11, 2010.
  • P. Buchholz, M. Telek.
    Stochastic Petri Nets with Matrix Exponential Firing Times
    Performance Evaluation 67 (12), 2010, pp. 1373-1385.
  • Jan Kriege, Peter Buchholz:
    An Empirical Comparison of MAP Fitting Algorithms
    Proc. of the 15th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems and Dependability and Fault Tolerance (MMB & DFT 2010), Springer, 2010.
  • Falko Bause:
    Doubly Stochastic and Circulant Structured Markovian Arrival Processes
    Technical Reports in Computer Science, No. 824, TU Dortmund Dortmund (Germany), 2009.
  • Falko Bause, Peter Buchholz, Jan Kriege:
    A Comparison of Markovian Arrival and ARMA/ARTA Processes for the Modeling of Correlated Input Processes
    Proc. of the Winter Simulation Conference (WSC) 2009, IEEE, 2009.
  • Peter Buchholz, Jan Kriege:
    A Heuristic Approach for Fitting MAPs to Moments and Joint Moments
    Proc. of the 6th International Conference on Quantitative Evaluation of SysTems (QEST 2009), IEEE Computer Society, 2009.
  • Peter Buchholz, Jan Kriege:
    Equivalence Transformations for Acyclic Phase Type Distributions
    Technical Report 827, Dep. of Computer Science, TU Dortmund, 2009.
  • A. Panchenko:
    Modelling of Network Processes by Means of Markovian Arrival Processes
    Dissertation, Fakultät Informatik, TU Dresden 2007.
  • A. Panchenko, A. Thümmler:
    Efficient Phase-Type Fitting with Aggregated Traffic Traces
    Performance Evaluation, 64, 629-645, Aug. 2007.
  • A. Thümmler, P. Buchholz, M. Telek:
    A Novel Approach for fitting Probability Distributions to Trace Data with the EM Algorithm
    IEEE Trans. on Dependable and Secure Computing Vol. 3, No. 3, July-Sept. 2006, 245-258. (Pre-version in: Proc. of Int. Conf. on Dependable Systems and Networks 2005, IEEE CS Press 2005, 712-721).
  • A. Tari, M. Telek, P. Buchholz:
    A Simplified Moment-Based Estimation Method for Extreme Probabilities, Infinite and Positive Case
    Int. Journ. on Simulation, Systems and Technology, Vol. 7 (4), 2006, S. 15-28.
  • G. Horvath, P. Buchholz, M. Telek:
    A MAP Fitting Approach with Independent Approximation of the Inter-Arrival Time Distribution and the Lag-Correlation
    In: Proc. 2nd Int. Conference on Quantitative Evaluation of Systems (QEST'2005), IEEE CS Press 2005, 124-133.
  • A. Tari, P. Buchholz, M. Telek:
    A unified Approach to the Moments based Distribution Estimation - the unbounded Case
    In: Proc. 2nd European Performance Evaluation Workshop, 2005, Spinger LNCS 3670, 79-93.
  • A. Tari, M. Telek, P. Buchholz:
    A Moment Based Estimation Method for Extreme Probabilities
    In: N. Thomas (ed.), Proc. 21st UK Performance Engineering Workshop, Technical Report CS-TR-916, School of Computing Science, University of Newcastle upon Tyne, 2005, 69-81.
  • P. Buchholz, A. Panchenko:
    A Two-Step Approach for MAP Fitting
    In: C. Aykanat, T. Dayar, I. Körpeoglu (Hrsg.). Computer and Information Sciences - ISCIS 2004, Springer LNCS 3280, S. 217-227.
  • P. Buchholz, A. Panchenko:
    An EM Algorithm for Fitting of Real Traffic Traces to PH-Distributions
    In: Proc. Int. Conference on Parallel Computing in Electrical Engineering (PARELEC 2004), IEEE Press 2004, 283-288.
  • P. Buchholz:
    An EM-Algorithm for MAP Fitting from Real Traffic Data
    In: P. Kemper, W. J. Sanders (Hrsg.). Computer Performance Evaluation Modelling Techniques and Tools. Springer LNCS 2794, 2003, S. 218-236.
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Location & approach

The campus of the Technical University of Dortmund is located near the Dortmund West motorway junction, where the Sauerland line A45 intersects with the Ruhrschnellweg B1/A40. The Dortmund-Eichlinghofen exit on the A45 leads to the south campus, the Dortmund-Dorstfeld exit on the A40 to the north campus. The university is signposted at both exits.

The S-Bahn station "Dortmund Universität" is located directly on the north campus. From there, the S-Bahn line S1 runs every 15 or 30 minutes to Dortmund main station and in the opposite direction to Düsseldorf main station via Bochum, Essen and Duisburg. The university can also be reached by bus lines 445, 447 and 462. Timetable information can be found on the website of the Rhein-Ruhr transport association, and DSW21 also offers an interactive network map.

One of the landmarks of the TU Dortmund is the H-Bahn. Line 1 runs every 10 minutes between Dortmund Eichlinghofen and the Technology Center via Campus South and Dortmund University S, line 2 runs every 5 minutes between Campus North and Campus South. She covers this distance in two minutes.

From Dortmund Airport you can take the AirportExpress to Dortmund Central Station in around 20 minutes and from there you can take the S-Bahn to the university. Düsseldorf Airport, which is about 60 kilometers away, offers a larger range of international flight connections and can be reached directly by S-Bahn from the university train station.