3 research outputs found
ΠΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΡ Ρ ΡΠ°Π½Π΅Π½ΠΈΡ ΠΈ ΠΏΠΎΠΈΡΠΊΠ° ΠΎΠ±ΡΠ°Π·Π° Π»ΠΈΡΠ° Π² ΠΎΠ±ΡΠ΅ΠΊΡΠ½ΠΎ-ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ Π±Π°Π·Π΅ Π»ΠΈΡ
The aim of the work is to develop an algorithm functioning by a face recognition system using object-oriented databases. The system provides automatic identification of the desired object or identifies someone using a digital photo or video frame from a video source. The technology includes comparing pre-scanned face elements from the resulting image with prototypes of faces stored in the database. Modern packages of object-oriented databases give the user the opportunity to create a new class with the specified attributes and methods, obtain classes that inherit attributes and methods from super classes, create instances of the class, each of which has a unique object identifier, extract these instances one by one or in groups, and also download and perform these procedures. Using a convolutional neural network in the algorithm allows the transition from specific features of the image to more abstract details.Π¦Π΅Π»ΡΡ ΡΠ°Π±ΠΎΡΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° Π°Π»Π³ΠΎΡΠΈΡΠΌΠ° ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΈΡΡΠ΅ΠΌΠΎΠΉ ΡΠ°ΡΠΏΠΎΠ·Π½Π°Π²Π°Π½ΠΈΡ Π»ΠΈΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΎΠ±ΡΠ΅ΠΊΡΠ½ΠΎ-ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
Π±Π°Π· Π΄Π°Π½Π½ΡΡ
. Π‘ΠΈΡΡΠ΅ΠΌΠ° ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅Ρ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΡΡ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΠΈΡΠΊΠΎΠΌΠΎΠ³ΠΎ ΠΎΠ±ΡΠ΅ΠΊΡΠ° ΠΈΠ»ΠΈ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΡΠΈΡΡΠ΅Ρ ΠΊΠΎΠ³ΠΎ-Π»ΠΈΠ±ΠΎ ΠΏΠΎ ΡΠΈΡΡΠΎΠ²ΠΎΠΉ ΡΠΎΡΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΈΠ»ΠΈ Π²ΠΈΠ΄Π΅ΠΎΠΊΠ°Π΄ΡΡ ΠΈΠ· Π²ΠΈΠ΄Π΅ΠΎΠΈΡΡΠΎΡΠ½ΠΈΠΊΠ°. Π’Π΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡ Π²ΠΊΠ»ΡΡΠ°Π΅Ρ ΡΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΠΏΡΠ΅Π΄Π²Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΠΊΠ°Π½ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² Π»ΠΈΡΠ° ΠΈΠ· ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡ Ρ ΠΏΡΠΎΠΎΠ±ΡΠ°Π·Π°ΠΌΠΈ Π»ΠΈΡ, Ρ
ΡΠ°Π½ΠΈΠΌΡΡ
Π² Π±Π°Π·Π΅ Π΄Π°Π½Π½ΡΡ
. Π‘ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΠ΅ ΠΏΠ°ΠΊΠ΅ΡΡ ΠΎΠ±ΡΠ΅ΠΊΡΠ½ΠΎ-ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
Π±Π°Π· Π΄Π°Π½Π½ΡΡ
Π΄Π°ΡΡ ΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΠ΅Π»Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΊΠ»Π°ΡΡΠ° Ρ Π·Π°Π΄Π°Π½Π½ΡΠΌΠΈ Π°ΡΡΠΈΠ±ΡΡΠ°ΠΌΠΈ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ, ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΊΠ»Π°ΡΡΠΎΠ², Π½Π°ΡΠ»Π΅Π΄ΡΡΡΠΈΡ
Π°ΡΡΠΈΠ±ΡΡΡ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΎΡ ΡΡΠΏΠ΅ΡΠΊΠ»Π°ΡΡΠΎΠ², ΡΠΎΠ·Π΄Π°Π²Π°ΡΡ ΡΠΊΠ·Π΅ΠΌΠΏΠ»ΡΡΡ ΠΊΠ»Π°ΡΡΠ°, ΠΊΠ°ΠΆΠ΄ΡΠΉ ΠΈΠ· ΠΊΠΎΡΠΎΡΡΡ
ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ ΡΠ½ΠΈΠΊΠ°Π»ΡΠ½ΡΠΌ ΠΎΠ±ΡΠ΅ΠΊΡΠ½ΡΠΌ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΎΡΠΎΠΌ, ΠΈΠ·Π²Π»Π΅ΠΊΠ°ΡΡ ΡΡΠΈ ΡΠΊΠ·Π΅ΠΌΠΏΠ»ΡΡΡ ΠΏΠΎ ΠΎΠ΄Π½ΠΎΠΌΡ ΠΈΠ»ΠΈ Π³ΡΡΠΏΠΏΠ°ΠΌΠΈ, Π° ΡΠ°ΠΊΠΆΠ΅ Π·Π°Π³ΡΡΠΆΠ°ΡΡ ΠΈ Π²ΡΠΏΠΎΠ»Π½ΡΡΡ ΡΡΠΈ ΠΏΡΠΎΡΠ΅Π΄ΡΡΡ. ΠΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ Π² Π°Π»Π³ΠΎΡΠΈΡΠΌΠ΅ ΡΠ²ΡΡΡΠΎΡΠ½ΠΎΠΉ Π½Π΅ΠΉΡΠΎΠ½Π½ΠΎΠΉ ΡΠ΅ΡΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΎΡΡΡΠ΅ΡΡΠ²ΠΈΡΡ ΠΏΠ΅ΡΠ΅Ρ
ΠΎΠ΄ ΠΎΡ ΠΊΠΎΠ½ΠΊΡΠ΅ΡΠ½ΡΡ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡ ΠΊ Π±ΠΎΠ»Π΅Π΅ Π°Π±ΡΡΡΠ°ΠΊΡΠ½ΡΠΌ Π΄Π΅ΡΠ°Π»ΡΠΌ
COOPERATIVE QUERY ANSWERING FOR APPROXIMATE ANSWERS WITH NEARNESS MEASURE IN HIERARCHICAL STRUCTURE INFORMATION SYSTEMS
Cooperative query answering for approximate answers has been utilized in various problem domains. Many challenges in manufacturing information retrieval, such as: classifying parts into families in group technology implementation, choosing the closest alternatives or substitutions for an out-of-stock part, or finding similar existing parts for rapid prototyping, could be alleviated using the concept of cooperative query answering. Most cooperative query answering techniques proposed by researchers so far concentrate on simple queries or single table information retrieval. Query relaxations in searching for approximate answers are mostly limited to attribute value substitutions. Many hierarchical structure information systems, such as manufacturing information systems, store their data in multiple tables that are connected to each other using hierarchical relationships - "aggregation", "generalization/specialization", "classification", and "category". Due to the nature of hierarchical structure information systems, information retrieval in such domains usually involves nested or jointed queries. In addition, searching for approximate answers in hierarchical structure databases not only considers attribute value substitutions, but also must take into account attribute or relation substitutions (i.e., WIDTH to DIAMETER, HOLE to GROOVE). For example, shape transformations of parts or features are possible and commonly practiced. A bar could be transformed to a rod. Such characteristics of hierarchical information systems, simple query or single-relation query relaxation techniques used in most cooperative query answering systems are not adequate. In this research, we proposed techniques for neighbor knowledge constructions, and complex query relaxations. We enhanced the original Pattern-based Knowledge Induction (PKI) and Distribution Sensitive Clustering (DISC) so that they can be used in neighbor hierarchy constructions at both tuple and attribute levels. We developed a cooperative query answering model to facilitate the approximate answer searching for complex queries. Our cooperative query answering model is comprised of algorithms for determining the causes of null answer, expanding qualified tuple set, expanding intersected tuple set, and relaxing multiple condition simultaneously. To calculate the semantic nearness between exact-match answers and approximate answers, we also proposed a nearness measuring function, called "Block Nearness", that is appropriate for the query relaxation methods proposed in this research
A query model and an object algebra for object-oriented databases
Ankara : The Department of Computer Engineering and Information Science and the Institute of Engineering and Science of Bilkent University, 1993.Thesis (Ph. D.) -- Bilkent University, 1993.Includes bibliographical references leaves 99-109.A query model is an important component of any database system. In this sense,
the relational model has a well defined underlying query model. On the other hand,
a well defined query model for object-oriented databases has not been accepted yet.
This is one of the common complaints against object-oriented databases. So defining
a formal object algebra is one of the most challenging steps in developing a theory for
object-oriented databases. In object-oriented data models, although messages serve to
manipulate the database, a query model is still required to effectively deal with more
complex situations and to facilitate associative access. In this thesis, a query model
for object-oriented databases is described, where both the structure and the behavior of
objects are handled. Not only the manipulation of existing objects, but also the creation
of new objects and the introduction of new relationships are supported in the model.
Equivalents to the five basic operations of the relational model as ivell as other additional
operations such as one level project, nest and aggregate function application are defined.
Hence, the proposed object algebra subsumes the relational algebra. Linear recursion
is also supported without requiring any additional operator to serve the purpose. Both
the operands as well as the results of these operations are characterized as having a
pair of sets -a set of objects and a set of message expressions (sequences of messages)
applicable to them. The closure property is shown to be preserved in a natural way
by the results of operations possessing the same characteristics as the operands in a
query. It is shown that every class possesses the properties of an operand by defining
a set of objects and deriving a set of message expressions for it. Furthermore, it is
shown that the output of a query has the characteristics of a class. Thus, it is also
shown how the super/subclass relationships of the result of a query with its operands
can be established and how the result can be placed persistently in the lattice (schema)
as a class. Such a class is naturally and properly placed in the lattice by maximizing
reusability due to inheritance. Also equivalent object algebra expressions are presented
and the associativity of the cross-product operation which is an important property in
query optimization is proved. Lastly, as it was recognized that schema evolution is an
important requirement to be satisfied by object-oriented databases, hence the handling
of schema evolution functions through the proposed object algebra operations is also
developed as another contribution of the thesis.Al- Hajj, RedaPh.D