Jung Jin Cho's research while affiliated with Baker Hughes Incorporated and other places

Publications (6)

Article
Using multiple, heterogeneous sensors in surveillance systems is desirable, not only to tolerate sensor failures, but also to increase the accuracy of the event detection process and to provide complementary capability under different operating conditions. In the operation of multiple, heterogeneous sensors, we may encounter inconsistent sensor obs...
Article
Full-text available
This paper presents a robust calibration procedure for clustered wireless sensor networks. Accurate calibration of between-node distances is one crucial step in localizing sensor nodes in an ad-hoc sensor network. The calibration problem is formulated as a parameter estimation problem using a linear calibration model. For reducing or eliminating th...
Article
Full-text available
In robust statistics, the concept of breakdown point was introduced to quantify the robustness of an es-timator in a linear regression model. Computing the breakdown point is useful in tuning some robust regression estimators (e.g., the least trimmed squares estimator). Computing the breakdown point for a structured linear model (i.e., one with dep...
Article
This article studies the girth and cogirth problems for a connected matroid. The problem of finding the cogirth of a graphic matroid has been intensively studied, but studies on the equivalent problem for a vector matroid or a general matroid have been rarely reported. Based on the duality and connectivity of a matroid, we prove properties associat...
Conference Paper
Full-text available
This paper presents a robust calibration procedure for a clustered wireless sensor network. The calibration problem is often formulated as a parameter estimation problem using a linear calibration model. For reducing or eliminating unwanted influences of measurement corruptions or outliers on parameter estimation, a robust regression estimator is a...
Article
Recent innovations in sensor technology enable manufacturers to distribute redundant sensors in manufacturing processes for quality monitoring, defect detection, and fault diagnosis. Even if a single sensor is relatively reliable, the large number of sensors in a distributed sensor system confronts us the almost unavoidable possibility that some of...

Citations

... In [43], an exhaustive procedure and a bound-and-decompose algorithm are used to find M = m − d, where d is the minimum number of rows of H that, if deleted, make H rank deficient. Finding the exact maximum breakdown point is computationally expensive when H is large. ...
... The punishment and reward mechanism is adopted to minimize the trust values and expected revenues of the attackers. Cho et al. [18] proposed a calibration technique for WSN. The clustering strategy is used to do robust estimation efficiently. ...
... Visible camera such as CCTV is the most common device for surveillance system which has long been in use to monitor environments, people, events and activities. Much review papers of extensive studies have been conducted to analyze data(video) from surveillance camera as like human detection and behaviour analysis [4][5][6], different sensor work in visible camera have been explored such as infrared camera and thermal camera [7] and also different techniques for sensor fusion [8][9][10][11][12] to improve the system performance. Developments in sensor devices, computer vision, and machine learning have an important role in enabling such intelligent system. ...
... see also analogous MIP models and/or exact algorithms for the cospark, i.e., vector matroid cogirth problem, in [100,212,10]. Here, only one of the z-variables can become 1, and z i = 1 implies y i = x i = 1, thus ensuring x = 0 and also eliminating sign symmetry (if Ax = 0, then also A(−x) = 0). ...
... The application of the wireless sensor network to electronic nose gas recognition will greatly improve its transmission rate and data acquisition capability. The network is featured with fast response, good reversibility and repeatability, and high sensitivity [12]. There are four types of commonly used wireless sensors: resistor type, mass type, optical type and capacitancecharge coupling type [13]. ...