The original work in response surface methodology (RSM) has been widely used in the chemical and process industries. Recent years have seen more widespread use and new developments in RSM. RMS activities since 1989 are reviewed, and areas of current and..

Response Surface Methodology: A Retrospective and Literature Survey

Methods and systems of continuously optimizing data in WiFi positioning systems. A location-based services system uses WiFi-enabled devices to monitor WiFi access points in a target area to indicate whether a WiFi access point has moved relative to its previously recorded location. A WiFi-enabled device communicates with WiFi access points within range of the WiFi-enabled device so that observed WiFi access points identify themselves; A reference database is accessed to obtain information specifying a recorded location for each observed WiFi access point in the target area. The recorded location information is used for each of the observed WiFi access points in conjunction with predefined rules to infer whether an observed WiFi access point has moved relative to its recorded location. The reference database is informed of the identity of any observed WiFi access point that is inferred to have moved.

Continuous data optimization of moved access points in positioning systems

In one embodiment, when it is determined that one or more Wi-Fi positioning system (WPS) tiles that are necessary to estimate a location of a mobile client device are not present in a WPS tile store on the mobile client device, or are present in the WPS tile store on the mobile client device but out of date, one or more new WPS tiles are requested from a remote server. Each WPS tile is a set of Wi-Fi access point data for Wi-Fi access points within a bounded geographical region. The one or more new WPS tiles are received from the remote server, and are cached in the WPS tile store on the mobile client device. Subsequent to the caching, one or more further locations of the mobile client device are estimated autonomously from the remote server, utilizing Wi-Fi access point data in the WPS tile store.

Method and system for selecting and providing a relevant subset of Wi-Fi location information to a mobile client device so the client device may estimate its position with efficient utilization of resources

A location beacon database and server, method of building location beacon database, and location based service using same. Wi-Fi access points are located in a target geographical area to build a reference database of locations of Wi-Fi access points. At least one vehicle is deployed including at least one scanning device having a GPS device and a Wi-Fi radio device and including a Wi-Fi antenna system. The target area is traversed in a programmatic route to avoid arterial bias. The programmatic route includes substantially all drivable streets in the target geographical area and solves an Eulerian cycle problem of a graph represented by said drivable streets. While traversing the target area, periodically receive the GPS coordinates of the GPS device. While traversing the target area, detecting Wi-Fi signals from Wi-Fi access points in range of the Wi-Fi device and recording identity information of the detected Wi-Fi access point in conjunction with GPS location information of the vehicle when the detection of the Wi-Fi access point was made. The location information is used to reverse triangulate the position of the detected Wi-Fi access point; and the position of the detected access point is recorded in a reference database.

Location-based services that choose location algorithms based on number of detected access points within range of user device

This paper provides an overview and perspective of recent research and applications of statistical process monitoring.

Some current directions in the theory and application of statistical process monitoring

An automated method for servicing a plurality of work items within committed times. A workflow including two or more work activities is assigned for each of the plurality of work items and a commitment is assigned either to each workflow or to each work item in each workflow. Queued work items are automatically assigned to a next available agent based on an activity state. A short-term predictor provides early detection of work items that are at risk of failing to meet their commitments. A long-term predictor detects backlogs of work items where excessive delays in queue are likely to put work items at risk of failing to meet their commitments. An activity's state can also cause additional reserve and backup agents to be assigned to it, to service work items from its queue before their commitments are missed.

Automated workflow method for assigning work items to resources

A system is disclosed that enables the estimation of the location of a wireless terminal in a wireless network. The illustrative embodiment works without requiring modifications to be made to the wireless terminal. Furthermore, the hardware of some embodiments of the present invention can be inexpensively deployed indoors. Some embodiments of the present invention are, therefore, ideally suited for use with legacy indoor systems. The system of the illustrative embodiment of the present invention, in some embodiments, uses an offline process and an online process for location estimation. The described system, however, can be used with other techniques for location estimation.

Estimating the location of inexpensive wireless terminals by using signal strength measurements

Assessing and monitoring the performance of computer and communications networks is an important problem for network engineers. A considerable amount of work has been done on tools and techniques for data collection, modeling, and analysis within the network research community. This article presents an overview of the engineering problems and statistical issues, describes recent research developments, and summarizes ongoing work and areas for further research. Although there are many interesting issues related to network analysis, our focus here is on estimating and monitoring network quality-of-service parameters. We discuss methods for estimating edge-level parameters from end-to-end path-level measurements, an important engineering problem that raises interesting statistical modeling issues. Other topics include network monitoring, network visualization, and discovery of network topology. Data from a corporate network are used to illustrate the problems and techniques. As in any overview, the discussio...

Statistical Aspects of the Analysis of Data Networks

The system and method identify a plurality of call flow events in a call analysis system. Call statistics are associated with the call flow events. The call flow events are organized into event groups each containing a plurality of call flow events. Once an event group is selected, call statistics for the events of the event group are displayed. In addition, the system and method allow for selection of individual call flow events in order to display calls associated with the events.

System and Method for Displaying Call Flows and Call Statistics

Disclosed herein are systems, methods, and non-transitory computer-readable storage media for analyzing source code and identifying potential defects. The methods employ both static analysis and dynamic testing to detect program defects early in the development stage for better quality with less cost. The analysis also ranks identified potential defects and reports only the most likely defects to a human developer. Once defects are detected, they can be removed right away and similar defects can be prevented automatically.

James M. Landwehr

Papers

Automated workflow method for assigning work items to resources

Estimating the location of inexpensive wireless terminals by using signal strength measurements

Statistical Aspects of the Analysis of Data Networks

System and Method for Displaying Call Flows and Call Statistics

System and method for software immunization based on static and dynamic analysis