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Name Search is an important search function in various types of information retrieval systems, such as online library catalogs and electronic yellow pages. It is also difficult due to the high degree of fuzziness required in matching name variants. Previous approaches to name search systems use ad hoc combinations of search heuristics. This paper first discusses two approaches to name modeling-the natural language processing (NLP) and the information retrieval (IR) models-and proposes a hybrid approach. The approach demonstrates a critical combination of complementary NLP and IR features that produces more effective fuzzy name matching. Two principles, position-as-attribute and position-transitionlikelihood, are introduced as the principles for integrating the advantageous aspects of both approaches. They have been implemented in an NLP-and IR-hybrid model system called Friendly Name Search (FNS) for real world applications in multilingual directory searches on the Singapore Yellow pages website.

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Abstract. In this short paper, we elaborate the concept of Cascading Modes of Communication (CMC) for knowledge creation in social media. Through a review of CMC and Multi-Stakeholder Learning Dialogue (MSLD), the 3 distinct dimensions of knowledge creation processes: the Epistemological, the Ontological and the Communicative, are posited as reference for the analysis of the processes. Each SECI process is framed as a conversion of knowledge along all 3 dimensions. The relationship of Expansive Learning and SECI cycles is then explored. Two previously discussed SECI processes: Boom-up and Slip-down are explained as phenomenon observed in boundary crossing. Furthermore, two new SECI processes symmetric to Boom-up and Slip-down are identified: Boil-Up and Percolate-down, pointing to the pervading tension between tacit-explicit, local-global, and consensus-dissensus knowledge conversion processes. This tension provides a theoretical explanation for the self-sustaining nature underling all knowledge creation process. Thus, the social media scaffold in CMC is to function as boundary objects created to bridge the stages of knowledge creation processes.