11 research outputs found
Classification of Incomplete Data Using the Fuzzy ARTMAP Neural Network
The fuzzy ARTMAP neural network is used to classify data that is incomplete in one or more ways. These include a limited number of training cases, missing components, missing class labels, and missing classes. Modifications for dealing with such incomplete data are introduced, and performance is assessed on an emitter identification task using a data base of radar pulsesDefense Advanced Research Projects Agency and the Office of Naval Research (N00014-95-1-0409) (S.G. and M.A.R); National Science Foundation (IRI-97-20333) (S.G.); Natural Sciences and Engineerging Research Council of Canada (E.G.); Office of Naval Research (N00014-95-1-0657
Π ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΉ Π·Π°ΡΠΈΡΡ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ
The systems of protection are considered which are adaptive to dynamics of threats and computer attacks. The two-level hierarchical model of adaptive protection is offered. The bottom adaptive level is intended for operative reaction to dynamics of an external environment. Therefore it should be intellectual (by analogy with immune mechanisms of biological system, which work automatically). The top adaptive level corresponds to processes of generalization and storing of the central nervous system. It is focused on use of intelligence of the safety manager as a component of model.Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ Π²ΠΎΠΏΡΠΎΡΡ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ ΡΠΈΡΡΠ΅ΠΌΡ Π·Π°ΡΠΈΡΡ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ (Π‘ΠΠ), ΡΡΡΡΠΊΡΡΡΠ° ΠΊΠΎΡΠΎΡΠΎΠΉ ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π° Π½Π° ΠΏΡΠΎΡΠ΅ΡΡΡ Π°Π΄Π°ΠΏΡΠ°ΡΠΈΠΈ ΠΊ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ΅ ΡΠ³ΡΠΎΠ· ΠΈ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΡ
Π°ΡΠ°ΠΊ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π² Π΄Π²ΡΡ
ΡΡΠΎΠ²Π½Π΅Π²ΠΎΠΉ ΠΈΠ΅ΡΠ°ΡΡ
ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π°Π΄Π°ΠΏΡΠΈΠ²Π½ΠΎΠΉ Π‘ΠΠ Π½ΠΈΠΆΠ½ΠΈΠΉ Π°Π΄Π°ΠΏΡΠΈΠ²Π½ΡΠΉ ΡΡΠΎΠ²Π΅Π½Ρ, ΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΡΠΉ Π·Π° ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ²Π½ΡΡ ΡΠ΅Π°ΠΊΡΠΈΡ Π½Π° Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΡ Π²Π½Π΅ΡΠ½Π΅Π³ΠΎ ΠΎΠΊΡΡΠΆΠ΅Π½ΠΈΡ, Π΄ΠΎΠ»ΠΆΠ΅Π½ Π±ΡΡΡ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠΌ (ΠΏΠΎ Π°Π½Π°Π»ΠΎΠ³ΠΈΠΈ Ρ ΠΈΠΌΠΌΡΠ½Π½ΡΠΌΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠ°ΠΌΠΈ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ, ΠΊΠΎΡΠΎΡΡΠ΅ ΡΠ°Π±ΠΎΡΠ°ΡΡ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈ, ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ Π±Π΅Π· ΠΊΠΎΡΡΠ΅ΠΊΡΠΈΠΈ ΡΠΎ ΡΡΠΎΡΠΎΠ½Ρ ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΠΎΠΉ Π½Π΅ΡΠ²Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ), Π° Π²Π΅ΡΡ
Π½ΠΈΠΉ Π°Π΄Π°ΠΏΡΠΈΠ²Π½ΡΠΉ ΡΡΠΎΠ²Π΅Π½Ρ (ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΠ΅Ρ ΠΏΡΠΎΡΠ΅ΡΡΠ°ΠΌ ΠΎΠ±ΠΎΠ±ΡΠ΅Π½ΠΈΡ ΠΈ Π·Π°ΠΏΠΎΠΌΠΈΠ½Π°Π½ΠΈΡ ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΠΎΠΉ Π½Π΅ΡΠ²Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ) ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½ Π½Π° ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΠ° Π°Π΄ΠΌΠΈΠ½ΠΈΡΡΡΠ°ΡΠΎΡΠ° Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΡΡΠΈ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ° ΠΌΠΎΠ΄Π΅Π»ΠΈ
Fuzzy-Neural Cost Estimation for Engine Tests
This chapter discusses artificial computational intelligence methods as applied to cost prediction. We present the development of a suite of hybrid fuzzy-neural systems for predicting the cost of performing engine tests at NASAβs Stennis Space Center testing facilities. The system is composed of several adaptive network-based fuzzy inference systems (ANFIS), with or without neural subsystems. The output produced by each system in the suite is a rough order of magnitude (ROM) cost estimate for performing the engine test. Basic systems predict cost based solely on raw test data, whereas others use preprocessing of these data, such as principal components and locally linear embedding (LLE), before entering the fuzzy engines. Backpropagation neural networks and radial basis functions networks (RBFNs) are also used to aid in the cost prediction by merging the costs estimated by several ANFIS into a final cost estimate
A Fuzzy/Neural Approach to Cost Prediction with Small Data Sets
The project objective in this work is to create an accurate cost estimate for NASA engine tests at the John C. Stennis Space Center testing facilities using various combinations of fuzzy and neural systems. The data set available for this cost prediction problem consists of variables such as test duration, thrust, and many other similar quantities, unfortunately it is small and incomplete. The first method implemented to perform this cost estimate uses the locally linear embedding (LLE) algorithm for a nonlinear reduction method that is then put through an adaptive network based fuzzy inference system (ANFIS). The second method is a two stage system that uses various ANFIS with either single or multiple inputs for a cost estimate whose outputs are then put through a backpropagation trained neural network for the final cost prediction. Finally, method 3 uses a radial basis function network (RBFN) to predict the engine test cost
A Fuzzy/Neural Approach to Cost Prediction with Small Data Sets
The project objective in this work is to create an accurate cost estimate for NASA engine tests at the John C. Stennis Space Center testing facilities using various combinations of fuzzy and neural systems. The data set available for this cost prediction problem consists of variables such as test duration, thrust, and many other similar quantities, unfortunately it is small and incomplete. The first method implemented to perform this cost estimate uses the locally linear embedding (LLE) algorithm for a nonlinear reduction method that is then put through an adaptive network based fuzzy inference system (ANFIS). The second method is a two stage system that uses various ANFIS with either single or multiple inputs for a cost estimate whose outputs are then put through a backpropagation trained neural network for the final cost prediction. Finally, method 3 uses a radial basis function network (RBFN) to predict the engine test cost
ΠΠ½Π°Π»ΠΈΠ· Π±ΠΈΠΎΠΈΠ½ΡΠΏΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ ΠΏΠΎΠ΄Ρ ΠΎΠ΄ΠΎΠ² Π΄Π»Ρ Π·Π°ΡΠΈΡΡ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΡ ΡΠΈΡΡΠ΅ΠΌ ΠΈ ΡΠ΅ΡΠ΅ΠΉ
Nowadays more and more different bio-inspired approaches (based on a biological metaphor) for the computer and networks security systems are mentioned and advertised. Traditional computer-based systems and their functionality are often limited by different conditions. Due to frequent minor errors, these systems are subject of failure. They lack scalability, have low adaptation ability to changeable conditions of functioning and its goals. As opposed to traditional computer-based systems, biological systems are often quite reliable. They have great self-protection mechanisms, highly scalable, adaptable and able to self regeneration. These properties of biological systems can be used to construct technical systems (including information security systems). The paper considers different approaches to the protection of computer systems and networks, which are based on a biological metaphor.Π Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ Π² ΠΎΠ±Π»Π°ΡΡΠΈ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΡΡΠΈ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ ΠΈ ΡΠ΅ΡΠ΅ΠΉ Π²ΡΠ΅ ΡΠ°ΡΠ΅ ΡΠΏΠΎΠΌΠΈΠ½Π°ΡΡΡΡ ΠΈ ΡΠ΅ΠΊΠ»Π°ΠΌΠΈΡΡΡΡΡΡ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ Π±ΠΈΠΎΠΈΠ½ΡΠΏΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄Ρ, ΡΠΎ Π΅ΡΡΡ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄Ρ, ΠΎΡΠ½ΠΎΠ²Π°Π½Π½ΡΠ΅ Π½Π° Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΌΠ΅ΡΠ°ΡΠΎΡΠ΅. ΠΠ΅ΠΉΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎ, ΡΡΠ°Π΄ΠΈΡΠΈΠΎΠ½Π½ΡΠ΅ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΈ ΡΠΈΡΡΠ΅ΠΌΡ, ΠΊΠ°ΠΊ ΠΏΡΠ°Π²ΠΈΠ»ΠΎ, ΠΎΠ³ΡΠ°Π½ΠΈΡΠ΅Π½Ρ ΠΏΠΎ ΡΠ²ΠΎΠΈΠΌ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΠΌ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡΠΌ, ΠΏΠΎΠ΄Π²Π΅ΡΠΆΠ΅Π½Ρ ΡΠ°ΡΡΠΎΠΌΡ Π²ΡΡ
ΠΎΠ΄Ρ ΠΈΠ· ΡΡΡΠΎΡ ΠΈΠ·-Π·Π° Π½Π΅Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΡΡ
ΠΎΡΠΈΠ±ΠΎΠΊ, ΠΈΠΌΠ΅ΡΡ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΡΡ ΠΌΠ°ΡΡΡΠ°Π±ΠΈΡΡΠ΅ΠΌΠΎΡΡΡ, Π½Π΅ ΠΎΠ±Π»Π°Π΄Π°ΡΡ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΡΡ ΠΊ Π°Π΄Π°ΠΏΡΠ°ΡΠΈΠΈ ΠΊ ΡΡΠ»ΠΎΠ²ΠΈΡΠΌ ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ΅Π»Π΅ΠΉ. Π ΠΏΡΠΎΡΠΈΠ²ΠΎΠΏΠΎΠ»ΠΎΠΆΠ½ΠΎΡΡΡ ΡΡΠΎΠΌΡ, Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠΈΡΡΠ΅ΠΌΡ, ΠΊΠ°ΠΊ ΠΏΡΠ°Π²ΠΈΠ»ΠΎ, ΡΠ΅Π°Π»ΠΈΠ·ΡΡΡ ΡΠ°Π·Π²ΠΈΡΡΠ΅ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΡ ΡΠ°ΠΌΠΎΠ·Π°ΡΠΈΡΡ, Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎ Π½Π°Π΄Π΅ΠΆΠ½Ρ, ΠΎΠ±Π»Π°Π΄Π°ΡΡ Π²ΡΡΠΎΠΊΠΎΠΉ ΠΌΠ°ΡΡΡΠ°Π±ΠΈΡΡΠ΅ΠΌΠΎΡΡΡΡ, Π°Π΄Π°ΠΏΡΠΈΠ²Π½Ρ ΠΈ ΡΠΏΠΎΡΠΎΠ±Π½Ρ ΠΊ ΡΠ°ΠΌΠΎΡΠ΅Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ. Π£ΠΊΠ°Π·Π°Π½Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΈΡΡΠ΅ΠΌ ΡΡΠΈΠΌΡΠ»ΠΈΡΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΡΠΈΠ½ΡΠΈΠΏΠΎΠ² ΠΈΡ
ΠΏΠΎΡΡΡΠΎΠ΅Π½ΠΈΡ ΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΠΈΡ
ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π² ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΈΡΡΠ΅ΠΌΠ°Ρ
, Π²ΠΊΠ»ΡΡΠ°Ρ ΡΠΈΡΡΠ΅ΠΌΡ Π·Π°ΡΠΈΡΡ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ. Π Π΄Π°Π½Π½ΠΎΠΉ ΡΡΠ°ΡΡΠ΅ ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡΡΡ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄Ρ ΠΊ Π·Π°ΡΠΈΡΠ΅ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ ΠΈ ΡΠ΅ΡΠ΅ΠΉ, Π² ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΠΎΡΠΎΡΡΡ
Π»Π΅ΠΆΠΈΡ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΌΠ΅ΡΠ°ΡΠΎΡΠ°
Anomaly detection in unknown environments using wireless sensor networks
This dissertation addresses the problem of distributed anomaly detection in Wireless Sensor Networks (WSN). A challenge of designing such systems is that the sensor nodes are battery powered, often have different capabilities and generally operate in dynamic environments. Programming such sensor nodes at a large scale can be a tedious job if the system is not carefully designed. Data modeling in distributed systems is important for determining the normal operation mode of the system. Being able to model the expected sensor signatures for typical operations greatly simplifies the human designerβs job by enabling the system to autonomously characterize the expected sensor data streams. This, in turn, allows the system to perform autonomous anomaly detection to recognize when unexpected sensor signals are detected. This type of distributed sensor modeling can be used in a wide variety of sensor networks, such as detecting the presence of intruders, detecting sensor failures, and so forth. The advantage of this approach is that the human designer does not have to characterize the anomalous signatures in advance.
The contributions of this approach include: (1) providing a way for a WSN to autonomously model sensor data with no prior knowledge of the environment; (2) enabling a distributed system to detect anomalies in both sensor signals and temporal events online; (3) providing a way to automatically extract semantic labels from temporal sequences; (4) providing a way for WSNs to save communication power by transmitting compressed temporal sequences; (5) enabling the system to detect time-related anomalies without prior knowledge of abnormal events; and, (6) providing a novel missing data estimation method that utilizes temporal and spatial information to replace missing values. The algorithms have been designed, developed, evaluated, and validated experimentally in synthesized data, and in real-world sensor network applications
Classification of incomplete data using the Fuzzy ARTMAP neural network
CENTER FOR ADAPTIVE SYSTEMS AND DEPARTMENT OF COGNITIVE AND NEURA