Electronics and Telecommunications Research Institute

Lg Household & Health Care Ltd.

Jong-Hoon Lee

Jung Tae Kim

Sang-Soo Lee

Hoon Ki Lee

Seung-Hyun Cho

Han-Hyub Lee

Jie-Hyun Lee

Eun-Gu Lee

Sang-Min Lee

Ik-Kyun Kim

Eui-Suk Jung

Euihyun Paik

Youngsoo Kim

Hyun Joo Kim

Young-Su Kim

Jung-Tae Kim

Jong-Hyun Kim

Won-Ho Ha

Young Ho Park

Hoo Young Ahn

Jong Geun Park

Ji-Hyeon Song

Mi-Jeong Park

Kyung-Sub Lee

Hyun-Jin Kim

Jonghyun Kim

Sunoh Choi

Jong-Geun Park

Young-Soo Kim

Cheol-Hee Park

Hye-Ju Yu

Disclosed herein are an apparatus and method for generating a data set. The apparatus includes one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program classifies collected data into numerical feature data and categorical feature data using a filter method, performs correlation analysis on the numerical feature data and the categorical feature data using an analysis of variance (ANOVA) method and a Chi-Squared method, and generates a data set for supervised learning and a data set for unsupervised learning using correlation scores calculated through correlation analysis.

Apparatus and method for generating data set

Disclosed herein are an apparatus and method for detecting a malicious script. The apparatus includes one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program is configured to extract token-type features, each of which corresponds to a lexical unit, and tree-node-type features of an abstract syntax tree from an input script, to train two learning models to respectively learn two pieces of learning data that are generated in consideration of features extracted respectively from the token-type features and the node-type features as having the highest frequency, and to detect whether the script is a malicious script based on the result of ensemble-based malicious script detection performed for the script, which is acquired using an ensemble detection model generated from the two learning models.

Apparatus and method for detecting malicious script

A method, an apparatus, and a system for analyzing traffic through obtaining flow data of a flow from a switch or a router of a network, calculating an average byte per packet rate (BPR) and a TCP flag ratio (TCPFR) for all flows included in a session including the flow using the flow data, and comparing the average BPR and the TCPFR with an average BPR and a TCPFR of previously-known traffic and determining whether the traffic including the flow is normal traffic or abnormal traffic based on the comparison result are provided.

Method and apparatus for analyzing traffic based on flow in cloud system

Disclosed is a method for detecting a cyberthreat through correlation analysis of security events, which includes extracting a false-positive data set by extracting, from source data, information about security events occurring during a predetermined time period based on a time at which erroneous detection occurred; extracting a true-positive data set by extracting, from the source data, information about security events occurring during the predetermined time period based on a time at which an intrusion threat was correctly detected; extracting a current data set by extracting information about security events occurring during the predetermined time period from data to be analyzed; generating event coincidence statistics by extracting a frequency of each security event in the respective data sets and by compiling statistics thereon; generating an event vector based on the event coincidence statistics; and performing intrusion threat detection through a vector space model based on the event vector.

Method and apparatus for detecting cyberthreats through correlation analysis

The present invention relates to an open optical access network system in which one optical access network is open to enable a plurality of service providers and a plurality of subscribers to simultaneously use the optical access network, to thereby improve the efficiency of using the optical access network, wherein each subscriber can be provided with a plurality of different services from the plurality of service providers, thereby enabling the flexible selection of services and the flexible change in services, thus improving the efficiency of using an optical infrastructure.

Open optical access network system

An APC receptacle stub and an APC TOSA having the same are provided. The APC receptacle stub includes a first APC stub and a second APC stub. The first APC stub has an optical fiber inserted thereto and is provided with one end section polished in an APC shape. The second APC stub has an optical fiber inserted thereto and is provided with one end section polished in an APC shape and an opposite end section which is coupled to an opposite end section of the first APC stub through rotation adjustment in the same axial direction as an axial direction of the opposite end section of the first APC stub. The APC receptacle stub enables easy optical alignment and is applicable to a light source that is sensitive to reflection.

Angled physical contact receptacle stub and angled physical contact transmitter optical sub-assembly having the same

An experience information processing apparatus for a social networking service, includes an ontology unit for providing a social ontology including social connection information and location information of a user and a service ontology including web service information, service location information and tag information. Further, the experience information processing apparatus includes an experience information management unit for extracting experience information content having location information from a plurality of mobile devices, classifying the extracted experience information content using the ontology unit to establish an experience information database, and searching the established experience information database based on the location information in response to a request from the mobile device to provide a social media service by linking the social connections information, the location information, and the tag information. Furthermore, the experience information processing apparatus includes an experience information storage unit for storing the experience information database.

Experience information processing apparatus and method for social networking service

An apparatus for driving a wavelength-independent light source is provided. The apparatus includes a seed light signal generation unit configured to generate seed light signals with one or more wavelengths based on a wavelength identification signal, a wavelength light detection unit configured to detect the wavelength identification signal from the seed light signals, an extraction unit configured to extract wavelength information corresponding to the detected wavelength identification signal and extract a driving condition of a wavelength-independent light source corresponding to the extracted wavelength information, and a driving unit configured to drive the wavelength-independent light source according to the extracted driving condition.

Apparatus and method for driving wavelength-independent light source

A method for indexing a suffix tree in a social network includes: scanning an input string and dividing the string into partitions each having a common prefix; performing no-merge suffix tree indexing on the divided partitions; storing information on the partitions on which no-merge suffix tree indexing is performed; storing suffix nodes of the no-merge suffix tree; and establishing a prefix tree. The performing no-merge suffix tree indexing includes: generating a set of suffixes having the common prefix in the input string; generating a suffix set from the set of suffixes and storing the suffix set; and building the suffix set as a sub-tree.

Method and apparatus for indexing suffix tree in social network

A system for accumulating social relation information for social network services, includes a user location profile management unit for collecting at preset periods location profile information of a user; a user profile management unit for collecting and storing user profiles preset by the user; and a social activity tracking unit for collecting profiles from social activities of the user. Further, the system for accumulating the social relation information for the social network services includes a social relation information generation unit for collecting pieces of information received from the user location profile management unit, the user profile management unit, the email tracking unit, the chatting tracking unit and the Internet phone call tracking unit, and extracting new social relation information based on correlations between the pieces of collected information to generate a social relation ontology.

System and method for accumulating social relation information for social network services

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Daejeon, South Korea

Jong-Hoon Lee