The new method, increasing efficiency and reliability of change detection in three structures in the Internet data under indetermination of data structure (DTD, XML-Schema) is proposed in this paper. The Boolean linear programming problem was solved in two exact methods – modified Balazs with filter and modified DP method and A modified method for selecting a neural network architecture was proposed. There is also considered publish/subscribe system description enhanced with core module, which provides notifications of changes to subscribers only in case they occurred.


S. Сhawathe, H. Garcia-Molina, Meaningful change detection in structured data, in: Proceedings of the ACM, SIGMOD International Conference on Management of Data, Tuscon, Arizona, May 1997, pp. 26–37.

S. Chawathe, S. Abiteboul, J. Widom, Representing and querying changes in semistructured data, in: Proceedings of the International Conference on Data Engineering, Orlando, Florida, February 1998, pp. 4–13.

S. Flesca, E. Masciari Efficient and affective Web change Detection

Change Detection of XML Documents Using Signatures. Latifur Khan, Lei Wang and Yan Rao Department of Computer Science University of Texas at Dallas, 2003.

Küster, U., H. Lausen, and B. König-Ries, Evaluation of Semantic Service Discovery—A Survey and Directions for Future Research. Emerging Web Services Technology, 2008. 2: p. 41-58.

Keyvan M., Suhaimi I., Mojtaba K., Kanmani M., Sayed G. H. T.i, A comparative evaluation of semantic web service discovery approaches, Proceedings of the iiWAS2010, November 08-10, 2010, Paris, France.

J. Jyoti, A. Sachde, and S. Chakravarthy, “CX-DIFF: A Change Detection Algorithm for XML Content and Change Visualization for WebVigiL,” Data and Knowledge Eng., vol. 52, no. 2, pp. 209-230, 2005.

H. P. Khandagale and P. P. Halkarnikar. A Novel Approach for Web Page Change Detection System. International Journal of Computer Theory and Engineering, Vol. 2, No. 3, June, 2010.

Classification of Web-based publishing systems and subscription of information resources / Yu.N. Molchanov, N.A. Alekseyev, L.S. Globa, Feldman Marius // Visnyk of V.N. Karazina Kharkiv National University, series “Mathematical Modeling. Information Technology. Automated control systems”. – Vol. 9, № 809, 2008. – 3-8pp.

Larisa Globa, Mykola Alieksieiev, Iurii Molchanov, Liudmyla Kobzar /XML Documents Change Detection System, ACS, 2010.

Larysa Globa, Mykola Alieksieiev, Iurii Molchanov / XML DOCUMENTS CHANGE DETECTION SYSTEM BASED ON BOOLEAN LINEAR PROGRAMMING TASK, Metody Informatyki Stosowanej, Szczecin, 2/2011 (27).

A.N. Antamoshkin, I.S. Masich Efficient algorithms of constrained optimization of monotone pseudoboolean functions. Vesnik of SibSAU. Issue 4 – Krasnoyarsk: SibSAU, 2003.