Now showing items 1065-1084 of 1217

    • Surviving the Information Explosion: How People Find Their Electronic Information 

      Alvarado, Christine; Teevan, Jaime; Ackerman, Mark S.; Karger, David (2003-04-15)
      We report on a study of how people look for information within email, files, and the Web. When locating a document or searching for a specific answer, people relied on their contextual knowledge of their information target ...
    • Swimming in Space-Time 

      Wisdom, Jack (2002-11-01)
      Cyclic changes in the shape of a quasi-rigid body on a curved manifold can lead to net translation and/or rotation of the body in the manifold. Presuming space-time is a curved manifold as portrayed by general relativity, ...
    • Symbolic Construction of a 2D Scale-Space Image 

      Saund, Eric (1988-04-01)
      The shapes of naturally occurring objects characteristically involve spatial events occurring at many scales. This paper offers a symbolic approach to constructing a primitive shape description across scales for 2D ...
    • Symbolic Error Analysis and Robot Planning 

      Brooks, Rodney A. (1982-09-01)
      A program to control a robot manipulator for industrial assembly operations must take into account possible errors in parts placement and tolerances of the parts themselves. Previous approaches to this problem have been ...
    • Symbolic Evaluation Using Conceptual Representations for Programs with Side-Effects 

      Yonezawa, Akinori; Hewitt, Carl (1976-12-01)
      Symbolic evaluation is a process which abstractly evaluates an program on abstract data. A formalism based on conceptual representations is proposed as a specification language for programs with side-effects. Relations ...
    • Symbolic Integration 

      Moses, Joel (1966-06-01)
      A program has been written which is capable of integrating all but two of the problems solved by the Siagle's symbollic integration program SAINT. In contrast to SAINT, it is a purely algorithmic program and it has ...
    • Symbolic Integration II 

      Moses, Joel (1966-10-01)
      In this memo we describe the current state of the integration program originally described in AI Memo 97 (MAC-M-310). Familiarity with Memo 97 is assumed. Some of the algorithms described in that memo have been extended. ...
    • Symmetric Set Theory: A General Theory of Isomorphism, Abstraction, and Representation 

      McAllester, David Allen (1983-08-01)
      It is possible to represent a finite set of points (atoms) by a finite sequence of points. However a finite set of points has no distinguished member and therefore it is impossible to define a function which takes a ...
    • Synapses That Compute Motion 

      Poggio, T.; Koch, C. (1987-06-01)
      Biophysics of computation is a new field that attempts to characterize the role in information processing of the several biophysical mechanisms in neurons, synapses, and membranes that have been uncovered in recent ...
    • Synchronizable Series Expressions: Part II: Overview of the Theory and Implementation 

      Waters, Richard C. (1987-11-01)
      The benefits of programming in a functional style are well known. In particular, algorithms that are expressed as compositions of functions operating on series/vectors/streams of data elements are much easier to ...
    • Syntactic Closures 

      Bawden, Alan; Rees, Jonathan (1988-06-01)
      In this paper we describe {\\it syntactic closures}. Syntactic closures address the scoping problems that arise when writing macros. We discuss some issues raised by introducing syntactic closures into the macro ...
    • Syntax and Display of Mathematical Expressions 

      Martin, William (1965-07-01)
      A LISP program converts a mathematical expression stored in list structure form, into a text-book style visual display. To do this, requires the selection and positioning of the individual symbols which make up the expression, ...
    • Syntax of the New Language 

      Levin, Michael (1964-05-01)
      This is a definition of the syntax of the *** language. It consists of modifications and extensions of the "Revised Report on the Algorithmic Language ALGOL 60" which is printed in the "Communications of the ACM", January ...
    • The Synthesis of Force-Closure Grasps 

      Nguyen; Van-Duc (1985-09-01)
      This paper addresses the problem of synthesizing planar grasps that have force closure. A grasp on an object is a force closure grasp if and only if we can exert, through the set of contacts, arbitrary force and moment on ...
    • The Synthesis of Stable Grasps in the Plane 

      Nguyen; Van-Duc (1985-10-01)
      This paper addresses the problem of synthesizing stable grasps on arbitrary planar polygons. Each finger is a virtual spring whose stiffnes and compression can be programmed. The contacts between the finger tips and the ...
    • Synthesis of Visual Modules from Examples: Learning Hyperacuity 

      Poggio, Tomaso; Fahle, Manfred; Edelman, Shimon (1991-01-01)
      Networks that solve specific visual tasks, such as the evaluation of spatial relations with hyperacuity precision, can be eastily synthesized from a small set of examples. This may have significant implications for the ...
    • Synthesizing Constraint Expressions 

      Freuder, Eugene C. (1976-07-01)
      An algorithm is presented for determining the values which simultaneously satisfy a set of relations, or constraints, involving different subsets of n variables. The relations are represented in a series of constraint ...
    • A System for Understanding Mathematical FORTRAN Programs 

      Waters, Richard C. (1976-08-01)
      This paper proposes a system which, when implemented, will be able to understand mathematical FORTRAN programs such as those in the IBM Scientific Subroutine Package. The system takes, as input, a program and annotation ...
    • System Validation via Constraint Modeling 

      Waters, Richard C. (1988-02-01)
      Constraint modeling could be a very important system validation method, because its abilities are complementary to both testing and code inspection. In particular, even though the ability of constraint modeling to ...
    • Systematic Nonlinear Planning 

      McAllester, David; Rosenblatt, David (1991-12-01)
      This paper presents a simple, sound, complete, and systematic algorithm for domain independent STRIPS planning. Simplicity is achieved by starting with a ground procedure and then applying a general and independently ...