William B Cohen

Address:

215 E 58 St, New York, NY 10022

Phone:

(917)8489328

VIN:

WDDNG8GB5AA288302

Make:

MERCEDES-BENZ

Model:

S-CLASS

Year:

2010

US Patent:

6418432, Jul 9, 2002

Filed:

Jul 24, 1998

Appl. No.:

09/117312

Inventors:

William W Cohen - North Plainfield NJ
Yoram Singer - New Providence NJ

Assignee:

ATT Corporation - New York NY

International Classification:

G06F 1730

US Classification:

707 5

Abstract:

An information retrieval system finds information in a Distributed Information System (DIS), e. g. the Internet using query learning and meta search for adding documents to resource directories contained in the DIS. A selection means generates training data characterized as positive and negative examples of a particular class of data residing in the DIS. A learning means generates from the training data at least one query that can be submitted to any one of a plurality of search engines for searching the DIS to find ânewâ items of the particular class. An evaluation means determines and verifies that the new item(s) is a new subset of the particular class and adds or updates the particular class in the resource directory.

US Patent:

39946401, Nov 30, 1976

Filed:

Nov 18, 1975

Appl. No.:

5/632964

Inventors:

William A. Cohen - Brooklyn NY

Assignee:

Sphero International Co. - Brooklyn NY

International Classification:

F01C 300

US Classification:

418 68

Abstract:

The engine includes a housing defining a spherical cavity therein. A cylindrical member, rotatably mounted within the cavity, is driven by a drive member movably mounted within the cylindrical member. The cylindrical member, the drive member and the internal wall of the cavity define an expansion-compression chamber. Steam intake and steam exhaust manifolds are provided in the housing at spaced positions adjacent the cavity. The cylindrical member is provided with a steam passage therein which, in at least one rotational position of the cylindrical member, operatively connects the expansion-compression chamber to the intake manifold and in at least one other rotational position thereof operatively connects the expansion-compression chamber to the exhaust manifold. An output shaft is rotatably mounted within the housing and connected to the cylindrical member to be driven thereby. A circular ring valve is interposed between the cylindrical member and the intake and exhaust manifolds, respectively, to vary the comparative durations of the intake to and exhaust from the expansion-compression chamber of the cylindrical member.

US Patent:

56279450, May 6, 1997

Filed:

Dec 1, 1995

Appl. No.:

8/566198

Inventors:

William W. Cohen - North Plainfield NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G06F 300

US Classification:

395 77

Abstract:

The invention permits various types of background knowledge for a concept learning system to be represented in a single formal structure known as an antecedent description grammar. A user formulates background knowledge for a learning problem into such a grammar, which then becomes an input to a learning system, together with training data representing the concept to be learned. The learning system, constrained by the grammar, then uses the training data to generate a hypothesis for the concept to be learned. Such hypothesis is in the form of a set of logic clauses known as Horn clauses.

US Patent:

39614972, Jun 8, 1976

Filed:

Jul 28, 1975

Appl. No.:

5/599605

Inventors:

William A. Cohen - Brooklyn NY

Assignee:

Sphero International Company - West Long Branch NJ

International Classification:

F16D 330

US Classification:

64 21

Abstract:

The joint includes first and second parts, each of which is operatively connected to a different one of two shafts. The parts are relatively movable about a given point in accordance with the angular movement of the shafts relative to each other and are rotatable in accordance with the rotation of the shafts. Each of the parts comprises a pair of radially spaced arcuate fingers which mesh with the corresponding fingers of the other part. One of the fingers on each part is provided with a slot. The slots align radially when the fingers mesh. A pin is provided, extending through the slots to connect the parts for simultaneous rotation and to permit relative movement between the pin and the parts, respectively. The other finger on each part is provided with a gear rack. A beveled idler gear, mounted on the pin, meshes with the gear racks simultaneously and is rotatable as the parts and thus the racks are moved relative to each other.

US Patent:

52768783, Jan 4, 1994

Filed:

Oct 7, 1992

Appl. No.:

7/958153

Inventors:

Peter G. Sutton - Yorktown Heights NY
William R. Cohen - Danbury CT
Robert A. Blackburn - North Salem NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 946

US Classification:

395650

Abstract:

A method and system are disclosed for efficiently managing task memory in a multi-tasking data processing system having a processor for processing multiple tasks, task memory associated with each task, main system memory and multiple data records stored within direct access storage. A data record is copied from direct access storage into a buffer in main system memory in response to an access of that data record by a particular task. A buffer within that task's virtual memory is then mapped to the data record and a write protect bit is associated with the task memory buffer. Thereafter, any attempt to store data into the buffer will temporarily halt processing of the task until a copy of the data record is written to a second buffer. Task processing is then resumed, after modifying the task's page table to reference the second buffer, and the task is then permitted to store data within the second buffer. In this manner, a second buffer copy of the data record is only created in response to an attempted modification of the data record, thereby minimizing the processor and memory assets required to manage data records in a multi-tasking data processing system.

US Patent:

57196923, Feb 17, 1998

Filed:

Jul 7, 1995

Appl. No.:

8/499247

Inventors:

William W. Cohen - North Plainfield NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G06F 1700
G06F 1500

US Classification:

395 23

Abstract:

Efficient techniques for inducing rules used in classifying data items on a noisy data set. The prior-art IREP technique, which produces a set of classification rules by inducing each rule and then pruning it and continuing thus until a stopping condition is reached, is improved with a new rule-value metric for stopping pruning and with a stopping condition which depends on the description length of the rule set. The rule set which results from the improved IREP technique is then optimized by pruning rules from the set to minimize the description length and further optimized by making a replacement rule and a modified rule for each rule and using the description length to determine whether to use the replacement rule, the modified rule, or the original rule in the rule set. Further improvement is achieved by inducing rules for data items not covered by the original set and then pruning these rules. Still further improvement is gained by repeating the steps of inducing rules for data items not covered, pruning the rules, optimizing the rules, and again pruning for a fixed number of times.

US Patent:

39345599, Jan 27, 1976

Filed:

Mar 10, 1975

Appl. No.:

5/556707

Inventors:

William A. Cohen - Brooklyn NY

Assignee:

Sphero International Company - West Long Branch NJ

International Classification:

F02B 5300

US Classification:

123 845

Abstract:

The rotary engine includes a casing having a spherical cavity, or working sphere, therein and an engine shaft rotatably mounted in the casing. A driven cylindrical member, or drum, having four combustion chambers therein is rotatably mounted within the casing bisecting the spherical cavity, and said driven member is connected to the engine shaft. A hollow driving circular member, or plate, operatively connected to the driven cylindrical member by passing through the center thereof and is mounted within the spherical cavity, or working sphere, of the casing. The intersection of the driven cylindrical member by the driving circular member forms four spherical wedge-shaped variable volumes referred to as "compression-expansion" chambers, within the working sphere. It is the expansion of the ignited gases within the compression-expansion chambers that drives the circular member, or plate, which in turn rotates the driven cylindrical member, or drum, that drives the engine shaft. Within the hollow circular driving member are four variable volume air "intake compartments" supplied with fresh air through rotating valves on stationary air intake tubes.

US Patent:

56424728, Jun 24, 1997

Filed:

May 20, 1994

Appl. No.:

8/246437

Inventors:

William W. Cohen - North Plainfield NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G06F 300

US Classification:

395 77

Abstract:

Apparatus and methods which employ a machine learning system to "learn" the specification for a program from a trace of an execution of the program on a set of test problems. The program is instrumented to produce the trace. Performance is improved by means of a declarative bias which expresses knowledge of the user about the program and constrains the learning system to produce only specifications which are consistent with the declarative bias. The apparatus and methods of the preferred embodiment are employed to learn specifications of views in a data base for a telephone switching system from traces produced by executing the programs which produce the views. Techniques for producing more than one specification and for dealing with views which involve conversions are also disclosed.