Robert is interested in information retrieval (Please click here for research opportunities). In 2000, he was a visiting research scholar at the Center for Intelligent Information Retrieval, University of Massachusetts, Amherst, USA. He participated in the NTCIR open IR evaluation and TREC open IR evaluation. He served as a reviewer or program committee member of various conferences (e.g., ACM SIGIR, ICTIR, ACM CIKM, NLDB, AIRS, IEEE NLPKE, ACL RS Workshop and IJCNLP), and as a reviewer for journals (e.g., ACM TALIP, DKE, DSS, IEEE Signal Processing Letters, IEEE TEC, IEEE TKDE, IEEE TSMC, IJCPOL, IJCSSE, IJNS, IJTS, IJCA, IPM, ISci, JASIST and Neurocomputing) and funding agencies (e.g., UGC). He helped to organize conferences (e.g., ISIMP 04 and WAIM 06). He delivered talks at the IBM Scientific Centre (Winchester), Hong Kong Digital 21 and HKG SIUF seminar. He spent his industrial internship at IBM Hursley, UK. His works (with his co-workers) have been cited in various books and research monographs (e.g., Connectionist models of memory and language, and Multilingual corpora in teaching and research). He is listed in various bibliography publications (e.g., Marquis "Who is who" in Science and Engineering). He has his share of administrative duties, for example being a member of the Departmental Research Committee. He also takes his own initiatives, like acquiring new equipment (not just to be used for himself or his students, but others [some from another department] too). He has taught over 20 different subjects at postgraduate, undergraduate and sub-degree levels. His graduated students include Kelvin Hung (M.Phil.), W.S. Wong (M.Phil.), Edward Dang (Ph.D.) and Jack Wu (Ph.D.).

1. Luk, R.W.P. (2010) "Understanding scientific study via process modeling", Foundations of Science 15(1): 49-78.
2. Dang, E.K.F., H.C. Wu, R.W.P. Luk and K.F. Wong (2009) "Building a framework for the probability ranking principle by a family of expected weighted rank". ACM Trans. on Information Systems 27(4): Article No. 20.
3. Dang, E.K.F., R.W.P. Luk, K.S. Ho, D.L. Lee and S.C.F. Chan (2009) "Optimal Combination of Nested Clusters by a Greedy Approximation Algorithm", IEEE Trans. on Pattern Analysis and Machine Intelligence 31(11): 2083-2087.
4. Ko, P.Y., R.W.P. Luk, K.S. Ho, F.L. Chung and D.L. Lee (2008) "Are concepts useful for organizing search results?" Proc. BCS HCI 2008.
5. Luk, R.W.P. (2008) On event space and rank equivalence between probabilistic retrieval models. Information Retrieval 11(6): 539-561.
6. Ho, E.K.S., H.V. Leong, W. Lam and R.W.P. Luk (2006) "Integrating XML and CORBA to support collaborative writing using off-the-shelf editing software", Information Systems 31(6): 465-488.
7. Luk, R.W.P. and R.I. Damper (2006) "Non-parametric linear time-invariant system identification by discrete wavelet transforms", Digital Signal Processing 16(3): 303-319.
8. Hung, K.Y., R.W.P. Luk, D.S. Yeung, F.L. Chung and W. Shu (2005) "A multiple classifier approach to detect Chinese character recognition errors", Pattern Recognition 38(5): 723-738.
9. Wong, W.S., R.W.P. Luk and E.K.S. Ho (2005) "Discovering title-like terms", Information Processing and Management 41(4):789-800.
10. Luk, R.W.P., B.K.Y. T'sou, T.B.Y. Lai, O.Y. Kwong, F.C.Y. Chik and L.Y.L. Cheung (2003) "Bilingual document retrieval and management using XML", Software: Practice and Experience 33(1): 41-59.
11. Luk, R.W.P., H.V. Leong, T.S. Dillon, Alvin T. S. Chan, W. B. Croft and J. Allan (2002) "A survey in indexing and searching XML documents", Journal of the American Society for Information Science and Technology 53(6): 415-437.
12. Luk, R.W.P. (2001) "Compact morphic directed acyclic word graph", The Computer Journal 44(5): 425-434.
13. Lam, Y.Y., R.W.P. Luk and F.L. Chung (2000) "Improving the robustness of wavelet transform for epoch detection", Proc. IEEE ICASSP Vol. 3, pp. 1303-1306.
14. Lau, K. and R.W.P. Luk (1999) "Word sense classification by hierarchical clustering", Journal of Chinese Language and Computing 9(1), 101-121.
15. Luk, R.W.P. and R.I. Damper (1998) "Computational complexity of a fast Viterbi decoding algorithm for stochastic letter-phoneme transduction", IEEE Trans. Speech and Audio Processing 6(3): 217-225.
16. Luk, R.W.P. and R.I. Damper (1996) "Stochastic phonographic transduction for English", Computer Speech and Language 10: 133-153.
17. Luk, R.W.P. and R.I. Damper (1994) "A review of stochastic transduction", Conference Proceedings of The Second ESCA/IEEE Workshop on Speech Synthesis, Mohonk Mountain House, New York, pp. 248-251.
18. Luk, R.W.P. and R.I. Damper (1993) "Inference of letter-phoneme correspondences with pre-defined consonant and vowel pattern", Proc. IEEE ICASSP '93, Vol 2, Minneapolis, MN, USA, pp. II-203-II-206.
19. Luk, R.W.P. and R.I. Damper (1992) "Inference of letter-phoneme correspondences by delimiting and dynamic time warping techniques", Proc. IEEE ICASSP '92, Vol 2, San Francisco, USA, pp. II.6.1- II.6.4.
20. Luk, R.W.P. and R.I. Damper (1991) "Stochastic Transduction for English text-to-phoneme conversion", Proc. ESCA Eurospeech '91, Vol 2, Genoa, Italy, pp. 779-782.