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 | 2012 | |
|---|---|---|
| j31 |      | Turkka Näppilä, Timo Niemi: An approach for developing a schemaless XML dataspace profiling system. J. Information Science 38(3): 234-257 (2012) |
| 2011 | ||
| j30 | | Turkka Näppilä, Katja Moilanen, Timo Niemi: A query language for selecting, harmonizing, and aggregating heterogeneous XML data. IJWIS 7(1): 62-99 (2011) |
| 2010 | ||
| j29 | | Janne Jämsen, Timo Niemi, Kalervo Järvelin: Derived types in semantic association discovery. J. Intell. Inf. Syst. 35(2): 213-244 (2010) |
| 2009 | ||
| j28 | | Timo Niemi, Turkka Näppilä, Kalervo Järvelin: A relational data harmonization approach to XML. J. Information Science 35(5): 571-601 (2009) |
| 2008 | ||
| j27 | | Turkka Näppilä, Kalervo Järvelin, Timo Niemi: A tool for data cube construction from structurally heterogeneous XML documents. JASIST 59(3): 435-449 (2008) |
| 2007 | ||
| j26 | | Timo Niemi, Janne Jämsen: A query language for discovering semantic associations, Part I: Approach and formal definition of query primitives. JASIST 58(11): 1559-1568 (2007) |
| j25 | | Timo Niemi, Janne Jämsen: A query language for discovering semantic associations, Part II: sample queries and query evaluation. JASIST 58(11): 1686-1700 (2007) |
| 2004 | ||
| j24 | | Timo Niemi, Marko Junkkari, Kalervo Järvelin, Samu Viita: Advanced query language for manipulating complex entities. Inf. Process. Manage. 40(6): 869-889 (2004) |
| 2003 | ||
| j23 | | Timo Niemi, Lasse Hirvonen, Kalervo Järvelin: Multidimensional Data Model and Query Language for Informetrics. JASIST 54(10): 939-951 (2003) |
| 2002 | ||
| j22 | | Timo Niemi, Marko Junkkari, Kalervo Järvelin: Relational Deductive Object-Oriented Modeling (RDOOM) Approach for Finding, Representing and Integrating Application-Specific Concepts. International Journal of Software Engineering and Knowledge Engineering 12(4): 415-451 (2002) |
| 2001 | ||
| j21 | | Kalervo Järvelin, Jaana Kekäläinen, Timo Niemi: ExpansionTool: Concept-Based Query Expansion and Construction. Inf. Retr. 4(3-4): 231-255 (2001) |
| 2000 | ||
| j20 | | Kalervo Järvelin, Timo Niemi, Airi Salminen: The visual query language CQL for transitive and relational computation. Data Knowl. Eng. 35(1): 39-51 (2000) |
| j19 | | Timo Niemi, M. Christensen, Kalervo Järvelin: Query language approach based on the deductive object-oriented database paradigm. Information & Software Technology 42(11): 777-792 (2000) |
| 1999 | ||
| j18 | | Kalervo Järvelin, Timo Niemi: Integration of complex objects and transitive relationships for information retrieval. Inf. Process. Manage. 35(5): 655-678 (1999) |
| 1996 | ||
| j17 | | Timo Niemi, Kalervo Järvelin: The processing strategy for the NF2 relational frc-interface. Information & Software Technology 38(1): 11-24 (1996) |
| c3 | | Kalervo Järvelin, Jaana Kristensen, Timo Niemi, Eero Sormunen, Heikki Keskustalo: A Deductive Data Model for Query Expansion. SIGIR 1996: 235-243 |
| 1995 | ||
| j16 | | Timo Niemi, Kalervo Järvelin: A Straightforward NF² Relational Interface with Applications in Information Retrieval. Inf. Process. Manage. 31(2): 215-231 (1995) |
| c2 | | Kalervo Järvelin, Timo Niemi: An NF2 Relational Interface For Document Retrieval, Restructuring and Aggregation. SIGIR 1995: 102-110 |
| 1993 | ||
| j15 | | Kalervo Järvelin, Timo Niemi: An Entity-Based Approach to Query Processing in Relational Databases. Part I: Entity Type Representation. Data Knowl. Eng. 10: 117-150 (1993) |
| j14 | | Kalervo Järvelin, Timo Niemi: An Entity-Based Approach to Query Processing in Relational Databases. Part II: Entity Query Construction and Updating. Data Knowl. Eng. 10: 151-186 (1993) |
| j13 | | Kalervo Järvelin, Timo Niemi: Deductive Information Retrieval Based on Classifications. JASIS 44(10): 557-578 (1993) |
| 1992 | ||
| j12 | | Timo Niemi, Kalervo Järvelin: Advanced Query Formulation in Deductive Databases. Inf. Process. Manage. 28(2): 181-200 (1992) |
| j11 | | Timo Niemi, Kalervo Järvelin: Operation-oriented query language approach for recursive queries - Part 1. Functional definition. Inf. Syst. 17(1): 49-75 (1992) |
| j10 | | Timo Niemi, Kalervo Järvelin: Operation-oriented query language approach for recursive queries - Part 2. Prototype implementation and its integration with relational databases. Inf. Syst. 17(1): 77-106 (1992) |
| 1991 | ||
| j9 | | Timo Niemi, Kalervo Järvelin: Prolog-Based Meta-Rules For Relational Database Representation and Manipulation. IEEE Trans. Software Eng. 17(8): 762-788 (1991) |
| c1 | | Kalervo Järvelin, Timo Niemi: Advanced Retrieval From Heterogeneous Fact Databases: Integration of Data Retrieval, Conversion, Aggregation and Deductive Techniques. SIGIR 1991: 173-182 |
| 1988 | ||
| j8 | | Timo Niemi: An approach and its specification to data reformatting in data conversion. Inf. Syst. 13(1): 31-51 (1988) |
| 1987 | ||
| j7 | | Kalervo Järvelin, Timo Niemi: Advanced tools for data conversion and database cost modelling. Information & Management 13(1): 11-24 (1987) |
| 1985 | ||
| j6 | | Timo Niemi, Kalervo Järvelin: Straightforward formalization of the relational model. Inf. Syst. 10(1): 65-76 (1985) |
| 1984 | ||
| j5 |  | |
| j4 | | Timo Niemi: Specification of data restructuring software based on the attribute method. International Journal of Parallel Programming 13(6): 425-460 (1984) |
| j3 | | Timo Niemi, Kalervo Järvelin: A Straightforward Formalization of the Relational Model. SIGMOD Record 14(1): 15-38 (1984) |
| 1983 | ||
| j2 | | Timo Niemi: Formal restructuring functions for hierarchical data bases. International Journal of Parallel Programming 12(6): 385-411 (1983) |
| j1 | | Timo Niemi: A seven-tuple representation for hierarchical data structures. Inf. Syst. 8(3): 151-157 (1983) |
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