When a query is posed on a centralized database, if it refers to attributes that are not defined in the database, the user is warranted to get either an error or an empty set. In contrast, when a query is posed on a peer in a P2P system and refers to attributes not found in the local database, the query should not be simply rejected if the relevant information is available at other peers. This ...

DNA fingerprinting has become an important tool for diversity assessment and varietal identification in plant breeding programs. Semi- random PCR primers targeting intron-exon splice junctions (ISJ) were used to evaluate the potential of these markers in identification and classification of rice genotypes. A total of 12 ISJ primers were used for screening fourteen Egyptian rice genotypes, inclu...

This paper presents a new framework for adding semantics into e-learning system. The proposed approach relies on two principles. The first principle is the automatic addition of semantic information when creating the mathematical contents. The second principle is the collaborative tagging and annotation of the e-learning contents and the use of an ontology to categorize the e-learning contents....

It is crucial to automatically generate accurate and effective signatures to defense against polymorphic worms. Previous work using conjunctions of tokens or token subsequence could lose some important information, like ignoring 1 byte token and neglecting the distances in the sequential tokens. In this paper we propose the Simplified Regular Expression (SRE) signature, and present its signatur...

In general, the machine learning process can be accelerated through the use of additional knowledge about the problem solution. For example, mono-morphic typed Genetic Programming (GP) uses type information to reduce the search space and improve performance. Unfortunately, monomorphic typed GP also loses the generality of untyped GP: the generated programs are only suitable for inputs with the ...

We study combinations of many-sorted algebraic term rewriting systems and polymorphic lambda term rewriting. Algebraic and lambda terms are mixed by adding the symbols of the algebraic signature to the polymorphic lambda calculus, as higher-order constants. We show that if a many-sorted algebraic rewrite system R has the Church-Rosser property (is confluent), then R + β + type-β + type-η rewrit...

This paper describes an experiment on the usability of a new personal information management system on internet (PIMI). The goals are to evaluate its usability, and to assess user tailoring as an evaluation technique. Thirty users participated to the study : a first part consisted in a standard user test (SUT) and a second part was a usability test with tailoring by users (UTT). Overall, a tota...

In this paper, we propose Semantic Similarity calculation measurement using INformation contents on EdGEs of ontology (SSINEGE) which is a hybrid edgeand information contents-based methodology. SSINEGE is devised to solve the limitation of the applying the same weighted edges by edgebased similarity. So, SSINEGE adopts information-contents theory to calculate the varied weights of edges. The va...

Large size digital aerial frame cameras like Intergraph DMC and Vexcel UltraCam are becoming standard for photogrammetric application. It is difficult to compare the information contents of such cameras with this of analogue photographic cameras. Also the rules for project planning have to be checked if the old relation between photo scale and map scale is still valid. The photo scale has no lo...