• October 2020

    • A Matlab toolbox for simulation and estimation of branching stochastic processes has first release. matlab-bp-engine
    • A Matlab toolbox implementing Delta Scoring (D -scoring method (DSM)) framewotk for test scoring, equating, and psychometric item analysis has it first official release matlab-delta-scoring
  • March, April 2020

    According to the restrictions related to COVID-19 contamination some new tasks arised as well as some of old ones changed their schedule.

    • Stochastic modeling and estimation of COVID-19 population dynamics
    • Online educational resources for our partners Bultest Standard.
    • Latent estimation of the items and persons characteristics under the Delta-scoring approach for National Assesment Center of the KSA, Riadh.
    • July 2019

      Attending at 41st Stochastic Processes and their Applications Conference, Evanston, Il, USA with a talk on robust estimation of the parameters of the multitype branching processes with a power series offspring distribution.

      A short stay in Fairfax, VA, USA to work on personal fit for aberrant test behaviour.

    • April 2019

      iXchange - Нашата информационна система, обслужваща обичайната дейност на обменни бюра е регистрирана в Публичен електронен списък на софтуерите за управление на продажби в търговските обекти по чл. 118, ал. 16 от ЗДДС.

    • February 2019

      On site in Riyadh, KSA. Applying the delta-scoring algorithms.

    • January 2019

      Working on delta-scoring algorithms under the contract with NCA, Riyadh, KSA.

    • November 2018

      Finalize some projects of SERP-ens ERP system.

    • October 2018

      Contracted with NCA, KSA, for development of software packages for estimated the test item characteristics under the delta-scoring concept.

    • August 2018

      Our team improves the algoritms under the Ultimate Jam Session. Under development.

    • July 2018

      Working on developing a system for Data Mining and AI, based on statistical algorithms - Datamix. Work is in progress.

    • June 2018

      Taking part in 18th International Summer Conference on Probability and Statistics (ISCPS'18) and 15th ANNUAL INTERNATIONAL CSECS CONFERENCE ON COMPUTER SCIENCE AND EDUCATION IN COMPUTER SCIENCE representing algorithm for generating a representative subsample from a relatively large sample, using Integer Linear Progtamming.

    • Match 2018

      Working on development of screening test for three-years old children

    • January 2018

      Providing statistical courses for GameLoft Bulgaria.

    • December 2017

      Developing the "SERPens"© ERP System.

    • November 2017

      Working on methodology and software for test assessment and assembly, based on Delta-Scoring concept.

    • September 2017

      Starting a statistical course for Gameloft team in Bulgaria.

    • September 2017

      Working on ultimatejamsession.com .

    • August 2017

      Adding an educational platform eduStation

    • March 2017

      We've contracted with Rual Travel for a modification of their booking system.

    • March 2017

      We have taken a part in School Value Added Measures Seminar, held by Ministry of Education and World Bank.

    • January 2017

      We have continued our work on Central Credit Register with collaboration with DataMax SA.

    • December 2016

      DataMax project "Central Credit Register" for Bulgarian National Bank.. We develop some additional reports for the user activity.

    • November 2016

      An bootstrap algorithm for estimeting the test items delta-scores was developed.

    • October 2016

      A software for test assembly was developed for National Center for Assessment in Higher Education, Riyadh, Kingdom of Saudi Arabia.

    • July 2016

      Continue the work on "Piloting Stayistical Models for Estimation of Schools Value-Added Using the Results ftom the National Assessments" according to a contract with Bulgarian Ministry of Education, Youth and Science and Bulgarian Association for Educational Measurement and Evaluation.

    • July 2016

      DataMax project "Central Credit Register" for Bulgarian National Bank.. We develop a web service for online information about credit indebtedness of a physical or legal person for National Revenue Agency.

    • June 2016

      We contracted with National Center for Assessment in Higher Education, Riyadh, Kingdom of Saudi Arabia for the further developing of their test center.

    • January 2016

      The last month we finished our work with "Open Society Institute" on the project project "Estimation of the impact of the School Of The Future initiative".

    • November 2015

      System for Automated Test Scoring and Equating (SATSE@NCA) for the National Center for Assessment in Higher Education, Riyadh, Kingdom of Saudi Arabia was released.

    • October 2015

      On site work in National Center for Assessment in Higher Education, Riyadh, Saudi Arabia.

    • September 2015

      We have contracted with "Open Society Institute" Foundation to work on the project "Estimation of the impact of the School Of The Future initiative".

    • August 2015

      A technical report "A System of Automated Test Scoring and Equating at the NCA: Algorithmic Procedures" for the National Center for Assessment in Higher Education Riyadh, Saudi Arabia.

    • 21-27 June 2015

      Участвахме в "Националния семинар по проблеми на образованието по стохастика"

    • 18 June 2015

      A new realisation of the package for Estimation of IRT parameters of test items and related techniques is available in GitHub.

    • 04-07 June 2015

      Our team participate at the 11th Annual International Conference on Computer Science and Education in Computer Science June 04-07 2015, Boston, MA. USA, presenting the work USING STOCHASTIC BRANCHING PROCESSES FOR SYSTEM MONITORING AND DIAGNOSTICS.

    • 04-07 June 2015

      Our team participate at the 11th Annual International Conference on Computer Science and Education in Computer Science June 04-07 2015, Boston, MA. USA, presenting the work USING STOCHASTIC BRANCHING PROCESSES FOR SYSTEM MONITORING AND DIAGNOSTICS.

    • 06-10 April 2015

      Our team take part in III Workshop on Branching Processes and their Applications in Badajoz, Spain. The work Point Estimation in Multivariate Power Series Ofspring Distribution was presented.

    • 01 March 2015

      The Item bank and test generation system runs on new domain testa.bg

    • 20 January 2015

      Our site was redesigned to use perl-web-reactor engine.

    • 12 November 2014

      Our project BG161PO003-1.1.05-221-C001 finished. A complete description (in Bulgarian) can be found here.

    • 1 November 2014

      Our system for generating educational test and cognitive diagnostics is online.

    • 24-27 September 2014

      Our team participate at V Congress of the Mathematicians of Macedonia

    • 22-26 July 2014

      Our team participate at VI European Congress of Methodology to present the work LSDM_CD

    • 21-28 June 2014

      Our team participate at XVI-th INTERNATIONAL SUMMER CONFERENCE ON PROBABILITY AND STATISTICS (ISCPS-2014) to present the work of comparing test results.

    • 5 June 2014

      Our team perform the statistical analyses for developing standards for speech development during childhood as a part of BG051PO00-4.1.07 project of the Ministry of Education and Science of Bulgaria.

    • 2 - 7 April 2014

      Participation of the anual meeting of the American Educational Research Association. Presenting the work "Testing for Differential Functioning and Group Differences on Cognitive Attributes: An Approach Based on the Least Squares Distance Method of Cognitive Diagnosis."

    • 2 January 2014

      Happy New Year to everybody.
      We have just finished the first version of TEQNCA - a program for equating test results. The project was finansed by National Center for Assessment in Higher Education of the Kingdom of Saudi Arabia (KSA).

    • 13 November 2013

      We have just finished the statistical analyses for screening test for evaluation of child development at the age up to 4 years in cooperation with UNICEF-Bulgaria and Bulgarian Ministry of Education, Youth and Science and Institute for Population and Human Studies of Bulgarian Academy of Science.

    • 13 August 2013

      The preliminary results of the project for evaluation of child development at the age up to 4 years are obtained.

    • 11 August 2013

      A tool for comparing two (or more) tests is developed and now is available for free.

    • 06 June 2013

      A preliminary results for the project "Piloting Stayistical Models for Estimation of Schools Value-Added Using the Results ftom the National Assessments" were presented at the Bulgarian Ministry of Education, Youth and Science..

    • 05 June 2013

      Start of the project for evaluation of child development at the age up to 4 years in cooperation with UNICEF-Bulgaria and Bulgarian Ministry of Education, Youth and Science and Institute for Population and Human Studies of Bulgarian Academy of Science.
      A managing system for the project is started. Managing System

    • 20 May - 25 May 2013

      Studying the preliminary test for the evaluation of child development at the age up to 4 years as a part of the project between UNICEF-Bulgaria and Bulgarian Ministry of Education, Youth and Science and Institute for Population and Human Studies of Bulgarian Academy of Science.

    • 20 April - 20 May 2013

      Members of the team take part at the join project between the World Bank Group, Bulgarian Ministry of Education, Youth and Science and Bulgarian Society for Measurement and Evaluation in Education, focused on Piloting Stayistical Models for Estimation of Schools Value-Added Using the Results ftom the National Assessments.

    • 3-5 April 2013

      Members of the team attended to the 42 conference of the Union of the Mathematicians in Bulgaria

    • 21 November 2012

      UNICEF project "Early Childhood Development" started again with the second stage of the study. A Longitude survey is planned as well as a collecting and studying new data from different regions of Bulgaria.

    • 17 October 2012

      A Windows self-extracting executable version of System for Test Assessment and Diagnoctics (TAD) is available

    • 19-20 September 2012

      Attending at ALTE SIG (Special interest Group) Meeting, Sofia -19 September 2012

    • 27-31 August 2012

      Our team was presented at 20th International Conference on COMPUTATIONAL STATISTICS (COMPSTAT 2012) with a work on simulation and estimation in the field of branching processes "C340: Simulation, estimation and robustification against outliers in branching processes: A computational approach".

    • 30 July 2012

      We finished the pilot survey of the UNICEF project "Early Childhood Development". The result was presented to the UNICEF Office in Bulgaria.

    • 23 July 2012

      The SEBRA budget payments were implemented in TEXIMBANK under the request of DataMax

    • 23-30 June 2012

      Our team (IRT) is participating on XV-th INTERNATIONAL SUMMER CONFERENCE ON PROBABILITY AND STATISTICS (ISCPS-2012).

      The following results are presented

      • A System for Test Analyses and Diagnostics (TAD)
      • Analysis of Cognitive Attributes Under the Graded Response Model in the Framework of Item Response Theory
      • Group Comparisons on Cognitive Attributes Using the Least Squares Distance Model of Cognitive Diagnosis
      • A computational approach for the statistical estimation of discrete time branching processes.
    • 11 June 2012

      Our joined work with Vessela Stoimenova Simulation, estimation and robustification against outliers in branching processes - a computational approach was accepted in 20th International Conference on Computational Statistics (COMPSTAT 2012).

    • 24 April 2012 - 11 June 2012

      DataMax project "Central Credit Register" for Bulgarian National Bank.. We develop a web service for online information about credit indebtedness of a physical or legal person as well as some modifficarions and reports for the existing system.

    • 5 April 2012

      UNICEF project "Early Childhood Development". We are involved in statistical analyses for creating standards for early childhood development in Bulgaria. The first step is a pilot survey for the region of Sofia.

    • 30 March 2012

      Our projects are based on some scierntific results in field of statistics. In the "Research" section references for some of the articles can be found.

    • 27 March 2012

      A Git repository for our projects projects is created. Find most recent versions of our projects at i-Research Projects Repository