State (computer science)

About: State (computer science) is a research topic. Over the lifetime, 24436 publications have been published within this topic receiving 225733 citations.

Programmer's manual for MMLE3, a general FORTRAN program for maximum likelihood parameter estimation

Abstract: The MMLE3 is a maximum likelihood parameter estimation program capable of handling general bilinear dynamic equations of arbitrary order with measurement noise and/or state noise (process noise). The basic MMLE3 program is quite general and, therefore, applicable to a wide variety of problems. The basic program can interact with a set of user written problem specific routines to simplify the use of the program on specific systems. A set of user routines for the aircraft stability and control derivative estimation problem is provided with the program. The implementation of the program on specific computer systems is discussed. The structure of the program is diagrammed, and the function and operation of individual routines is described. Complete listings and reference maps of the routines are included on microfiche as a supplement. Four test cases are discussed; listings of the input cards and program output for the test cases are included on microfiche as a supplement.

Scan mechanism for monitoring the state of internal signals of a VLSI microprocessor chip

Abstract: A VLSI chip debug and production test apparatus that allows an engineer to view the state of hundreds of signals internal to a chip in real-time without probing, which greatly simplifies the isolation of circuit, speed, logic, and microcode bugs. For production testing, it also provides the ability to check the state of these internal signals on a clock-by-clock basis. The mechanism uses a gated XOR-input serial shift-register cell (10), which is stepped out underneath major buses in otherwise unpopulated areas of the chip. Several of these cell groups are linked together to form a scanout path of the desired length, the operation of which is controlled with a single input pin (40). Output data is channeled through a shared output pin (19) to a VLSI tester (16). In the tester (16) the data (19) is checked and accumulated by back-end software over multiple test-loop iterations, and formatted into a readable form.

Method for simulating newtonian interactions over a computer network

Abstract: This invention enables a bandwidth efficient computer simulation of sustained contact between objects When an object comes into sustained contact with a second object, it will communicate to the second object a transfer function describing the contact, and vice-versa The transfer function enables the objects to simulate the sustained contact for as long as the contact continues, eliminating any need for further network communication between the objects regarding the state of the contact until the contact terminates

State of statistical data editing and current research problems

Abstract: 1. INTRODUCTION This paper is my description of the state of statistical data editing and current research problems. It is not intended to be a complete description of all areas. Rather, it represents sub-areas of statistical data editing that I will describe in sufficient detail so that the discussion of a few research problems is more easily understood. I define statistical data editing (SDE) as those methods that are used to edit (i.e., clean-up) and impute (fill-in) missing or contradictory data. The end result of SDE is data that can be used for intended analytic purposes. These include primary purposes such as estimation of totals and subtotals for publications that are free of self-contradictory information. The published totals do not contradict published totals in other sources. Self-contradictory information might include groups of items that do not add to desired subtotals or totals for subgroups that exceed a known proportion of the total for the entire group. The uses of the data after SDE might be preparation of variances of estimates for a number of sub-domains and micro-data analyses. If only a few published totals need to be accurate, then an efficient use of resources may be to perform detailed edits on only a few records that effect the estimated totals. If many analyses need to be performed on a large number of sub-domains or if the full set of accurate micro-data are needed, then a very large number of edits, follow-up, and corrections may be needed. SDE can be used in all phases of survey processing. These phases include frame development, form design, proposed analytic purposes for which the data are collected, and quality assurance. This paper focuses primarily on SDE as it applies to analytic purposes, and places most emphasis on those procedures typically applied after the initial receipt of survey or other data. The main goal of SDE might be improved procedures and greater automation to enhance the ability of survey managers and analysts to provide accurate published estimates and micro-data. I broadly subdivide statistical data editing into two subcategories: (1) Fellegi-Holt (FH) methods and systems and (2) General methods and systems. FH systems are based on the Fellegi-Holt model of editing and typically add various options for imputation. General methods are all other methods. Whereas the paper by Fellegi and Holt (1976) appeared quite awhile ago, few systems have been implemented because of the difficulty in developing …

Biometric interface for a handheld device

Abstract: Methods and systems for applying biometric data to an interactive program executed by a portable device are provided. According to embodiments of the invention, raw bio-signal data is captured and filtered so as to determine the bio-signal of the user of the interactive program. The bio-signal is analyzed so as to determine biometrics of the user, which are applied as input to the interactive program. A setting or state of the interactive program is modified based on the biometrics. An updated state of the interactive program is rendered to the user, reflecting the modification of the setting or state of the interactive program.