The processing of data streams in general and the mining of such streams in particular have recently attracted considerable attention in various research fields. A key problem in stream mining is to extend existing machine learning and data mining methods so as to meet the increased requirements imposed by the data stream scenario, including the ability to analyze incoming data in an online, in...

Although issues of data streams have been widely studied and utilized, it is nevertheless challenging to deal with sequential mining of data streams. In this paper, we assume that the transaction of a user is partially coming and that there is no auxiliary for buffering and integrating. We adopt the Path Tree for mining frequent sequential patterns over data streams and integrate the user’s seq...

Open architectures meet the demands of increasingly complex and diverse networks by adding programmability to some or all components of the network infrastructure. The effectiveness of this programmability, however, is severely reduced in the domain of encrypted data streams. Because encrypted streams are opaque, existing solutions to adapting encrypted data are limited to either performing lin...

In recent years, emerging applications introduced new constraints for data mining methods. These constraints are typical of a new kind of data: the data streams. In a data stream processing, memory usage is restricted, new elements are generated continuously and have to be considered as fast as possible, no blocking operator can be performed and the data can be examined only once. At this time ...

Domestic urban streams face insufficient base flow and consequently become dry in drought season, vulnerable to water quality deterioration ecological impairment, due contaminants introduced from the pollutants. Many efforts are being made improve natural by actively enforcing restoration projects of streams. Gulpocheon is a national stream flowing through Incheon-si Gimpo-si. As March 2019, re...

This study on farmers’ perception and management of natural hazards in production and security of farm investment was carried out in Isuikwuato Local Government Area of Abia State, Nigeria. The study was sought to identify farmers’ perceived natural hazards in food production; identify adopted measures used in mitigating impacts of the hazards and determined factors that influenced farmers from...

Changes in nutrient concentrations groundwater were investigated to determine the impact of agriculture on water quality artificial lakes. The study covered three reservoirs an agricultural area Wielkopolska (central-western part Poland). Assessing required a network piezometers around reservoirs, used degree pollution from nutrients supplied reservoirs. Moreover, analysis streams flowing into ...