... probabilistic model of link grammar. In Proc. of the AAAI Conf. on Probabilistic Approaches to Nat. Lang., October. D. Magerman. 1995. Statistical decision-tree mod- els for parsing. In Proceedings ... find is defined as the product of the prob- abilities of all productions used to condition in- ference rules in the proof tree. The highest- probability derivation for any item can be re- ... A[a] is accompanied by a probability distribu- tion over productions of the form A[a] + ~. A T is just a derivation (proof tree) of lZ~n ,.o parse and its probability like that of any...
Ngày tải lên: 20/02/2014, 19:20
... concerned with choosing a formalism for an extended semantic component, but rather with demonstrating where the syntax has to provide for those elements of discourse information that influence ... diseo~se. The 1D/LP format, which has the mechanisms to handle free word order, has been extended to account for the interaction of syntax and prag- mat.its, as well as for the mutually competing ... Framework for Processing Partially Free Word Order* Hans Uszkoreit Artificial Intelligence Center SRI International 333 Ravenswood Avenue Menlo Park, CA 94025 Abstract The partially free word...
Ngày tải lên: 21/02/2014, 20:20
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... ngôn ngữ tức là C được sử dụng cho các mikroC PRO cho PICtrình biên dịch. Trong trường hợp này, trình biên dịch được sử dụng cho lập trình vi điều khiển PIC. Dù sao, lưu ý này đề cập đến chi ... (EEPROM) Nội dung của EEPROM có thể được thay đổi trong quá trình hoạt động (tương tự như RAM), nhưng vẫn còn lưu vĩnh viễn ngay cả sau khi mất quyền lực (tương tự như ROM). Theo đó, EEPROM ... trong bảng trên trang trước đó, ngoại trừ '16-bit monsters' PIC 24FXXX và PIC 24HXXX-tất cả các vi điều khiển PIC có kiến trúc Harvard 8-bit và thuộc một trong ba nhóm lớn. Như vậy,...
Ngày tải lên: 16/03/2014, 10:20
Báo cáo khoa học: "Optimal rank reduction for Linear Context-Free Rewriting Systems with Fan-Out Two" pot
... LCFRSs’ productions (Kuhlmann and Satta, 2009). This process is called production factorization. Pro- duction factorization is very similar to the reduc- tion of a context -free grammar production ... algorithm for opti- mal reduction of the length of production right-hand side in LCFRSs with fan-out at most 2. This results in asymptotical run- ning time improvement for known parsing algorithms for ... of space prevents us from providing the proof of the following property. For any E ∈ E that contains more than one edge, |out(E)| ≤ 2 and |in(E)| ≥ 2. This allows us to prove our up- per bound...
Ngày tải lên: 16/03/2014, 23:20
harnect programming like a pro for teens
... your program ready to test or you may have the entire program ready for testing. Testing is where you execute the program and act as a user for your program. You will provide data to your program ... will process your programs and what types of resources you have available as a programmer. The next topic involved programming languages. Programming languages are the artificial languages that programmers ... introduction to the process that is used for developing software. Whether you are developing software for a Fortune 500 company, for a small startup, for a class, or just for fun, you will use...
Ngày tải lên: 19/03/2014, 14:06
The Harvard Classics Volume 38, by Various Copyright laws are changing all over the world. Be sure to check the copyright laws for your country before downloading or redistributing this pdf
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Ngày tải lên: 22/03/2014, 23:20
Báo cáo khoa học: "Optimal Head-Driven Parsing Complexity for Linear Context-Free Rewriting Systems" docx
... polynomial time algorithm for factor- izing LCFRSs in order to minimize time complexity would imply an improved approximation algorithm for the well-studied graph-theoretic property known as treewidth. ... possible. Since parsing problems can be cast in terms of logic programming (Shieber et al., 1995), we note that our problem can be thought of as a type of query optimization for logic programming. Query optimization ... and space-complexity problems to be NP-hard for head- driven strategies. We provide what is to our knowl- edge the first NP-hardness result for a grammar fac- torization problem, which we hope...
Ngày tải lên: 23/03/2014, 16:20
Báo cáo khoa học: "An Optimal-Time Binarization Algorithm for Linear Context-Free Rewriting Systems with Fan-Out Two" ppt
... algorithm for transforming LCFRS with fan-out at most 2 into a binary form, whenever this is possible. This results in asymptotical run-time improvement for known parsing algorithms for this class. 1 ... algorithms for parsing based on LCFRS the crucial goal is therefore to optimize the term f · (r + 1). In practical natural language processing applic- ations the fan-out of the grammar is typically bounded ... output binarization of an LCFRS production. 2 Linear context -free rewriting systems We briefly summarize here the terminology and notation that we adopt for LCFRS; for detailed definitions, see (Vijay-Shanker...
Ngày tải lên: 23/03/2014, 16:21
Báo cáo khoa học: "Efficient Multi-pass Decoding for Synchronous Context Free Grammars" pdf
Ngày tải lên: 23/03/2014, 17:20
Free Download ReelPortal - Video call hội họp trên PlayBook cực Cool pot
Ngày tải lên: 29/07/2014, 03:20
DO YOU FACE THESE CULTURE CHALLENGES IN YOUR COMPANY OR TEAM?by Richard Parkes Cordock SMASHWORDS EDITIONCopyright © Richard Parkes Cordock 2012 First Published 2012 by ELW Publishing Bath, UKThank you for downloading this free ebook. You are welcome potx
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Ngày tải lên: 08/03/2014, 15:20
pic microcontroller project book for picbasic and picbasic pro compilers
Ngày tải lên: 24/04/2014, 16:00
apress pro.dynamic..net.4.0.applications.data-driven.programming.for.the..net.framework
Ngày tải lên: 06/08/2013, 17:29
Free Software tools for embedded systems
... ) and can boot several operating systems (Linux, uClinux, and others) Softgun: http://softgun.sourceforge.net Virtual ARM system with many virtual onboard peripherals. Boots Linux. SWARM Software ARM arm7 emulator http://www.cl.cam.ac.uk/~mwd24/phd/swarm.html Can run uClinux 13 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 klibc http://www.kernel.org/pub/linux/libs/klibc/ “Kernel C library” Tiny and minimalistic C library designed for use in an initramfs at boot time (alternative to initrds). Fine for the creation of simple shell scripts. Ships with small executables for use in shells, built with klibc, and a klcc compiler to compile your own applications. Not elaborate enough to support BusyBox applications. Useful details in http://en.wikipedia.org/wiki/Klibc 19 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Platform specific toolchains (1) ARM Code Sourcery (supports GNU/Linux, EABI and uClinux): http://www.codesourcery.com/gnu_toolchains/arm/ Also available for Windows workstations. MIPS http://www.linuxmips.org/wiki/Toolchains (useful links) 6 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Training contents (3) Annexes Automatic system generation with BitBake / OpenEmbedded 33 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Other emulators ColdFire emulator http://www.slicer.ca/coldfire/ Can boot uClinux 37 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Minicom (1) Definition: serial communication program Available in all GNU / Linux distributions Capabilities (all through a serial link): Serial console to a remote Unix system File transfer Modem control and dialup Serial port configuration 50 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Denx Software Engineering http://denx.de Created by Wolfgang Denk, the author of the UBoot bootloader. Create and support the Embedded Linux Development Kit (ELDK), a complete and well documented development environment. This kit is not only Free Software, it can be downloaded freely by anyone. A great community member and contributor! 15 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Free Software tools for embedded systems GNU / Linux workstation Crosscompiling toolchains 9 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 uClibc http://www.uclibc.org/ from CodePoet Consulting License: LGPL Lightweight C library for small embedded systems, with most features though. The whole Debian Woody was ported to it ... ) and can boot several operating systems (Linux, uClinux, and others) Softgun: http://softgun.sourceforge.net Virtual ARM system with many virtual onboard peripherals. Boots Linux. SWARM Software ARM arm7 emulator http://www.cl.cam.ac.uk/~mwd24/phd/swarm.html Can run uClinux 13 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 klibc http://www.kernel.org/pub/linux/libs/klibc/ “Kernel C library” Tiny and minimalistic C library designed for use in an initramfs at boot time (alternative to initrds). Fine for the creation of simple shell scripts. Ships with small executables for use in shells, built with klibc, and a klcc compiler to compile your own applications. Not elaborate enough to support BusyBox applications. Useful details in http://en.wikipedia.org/wiki/Klibc 19 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Platform specific toolchains (1) ARM Code Sourcery (supports GNU/Linux, EABI and uClinux): http://www.codesourcery.com/gnu_toolchains/arm/ Also available for Windows workstations. MIPS http://www.linuxmips.org/wiki/Toolchains (useful links) 6 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Training contents (3) Annexes Automatic system generation with BitBake / OpenEmbedded 33 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Other emulators ColdFire emulator http://www.slicer.ca/coldfire/ Can boot uClinux 37 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Minicom (1) Definition: serial communication program Available in all GNU / Linux distributions Capabilities (all through a serial link): Serial console to a remote Unix system File transfer Modem control and dialup Serial port configuration 50 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Denx Software Engineering http://denx.de Created by Wolfgang Denk, the author of the UBoot bootloader. Create and support the Embedded Linux Development Kit (ELDK), a complete and well documented development environment. This kit is not only Free Software, it can be downloaded freely by anyone. A great community member and contributor! 15 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Free Software tools for embedded systems GNU / Linux workstation Crosscompiling toolchains 9 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 uClibc http://www.uclibc.org/ from CodePoet Consulting License: LGPL Lightweight C library for small embedded systems, with most features though. The whole Debian Woody was ported to it ... Support services Useful if you don't have your own support resources Long term support commitment, even for versions considered as obsolete by the community, but not by your users! 44 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Commercial toolsets Caution: commercial doesn't mean proprietary! Vendors play fair with the GPL and do make their source code available to their users, and most of the time, to the community. As long as they distribute the sources to their users, the GPL doesn't require vendors to share their sources with any third party. No issue with all the GPL sources developed by or with the community. Graphical toolkits developed by the vendors look proprietary. Their licenses are not advertised on their websites! You have to be a customer to know or get a free preview kit to know. 35 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Free Software tools for embedded systems GNU / Linux workstation Various tools 34 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Emulators Summary System emulators Useful to experiment with a full system, including the kernel qemu: x86, x86_64, arm, sparc, ppc, mips SkyEye: several arm architectures User emulators Useful to run or debug user space binaries for other CPUs qemu: x86, arm, sparc, ppc, mips 20 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Platform specific toolchains (2) Coldfire Code Sourcery (supports ELF, GNU/Linux and uClinux): http://www.codesourcery.com/gnu_toolchains/coldfire PowerPC Code Sourcery (supports GNU/Linux and EABI) http://www.codesourcery.com/gnu_toolchains/power.html 49 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Sysgo Koan Software http://sysgo.com ELinOS development toolset, in particular based on Eclipse and the Linux Trace Toolkit. Includes FreeToolBox, a freely downloadable compiling and rootfs creating toolchain. Supports i386, arm and ppc. Hard realtime support with their own microkernel (PikeOS), an approach similar to RTAI. http://koansoftware.com Makers of KaeilOS (http://koansoftware.com/kaeilos/), a GPL embedded Linux distribution for industrial applications. KaeilOS supports i386 and popular arm platforms. Other platforms supported upon request. Includes several graphical toolkits and supports hard realtime (RTAI, Xenomai, preemption patches). Unfortunately, KaeilOS is GPL but not available for public download. 16 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Standalone toolchain build Building a crosscompiling toolchain by yourself is a difficult and painful task! Can take days or weeks! Lots of details to learn. Several components to build (building gcc twice: once for gcc + once for compilers that need the C library). Lots of decisions to make (such as C library version and configuration for your platform) Need kernel headers and C library sources Need to be familiar with current gcc issues and patches on your platform Useful to be familiar with building and configuring tools http://www.aleph1.co.uk/armlinux/docs/toolchain/toolchHOWTO.pdf can show you how fun it can be! 21 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Toolchain building utilities Buildroot: http://buildroot.uclibc.org/ Dedicated Makefile to build uClibc based toolchains and even entire root filesystems. Downloads sources and applies patches. Crosstool: http://www.kegel.com/crosstool/ Dedicated script to build glibc based toolchains Doesn’t support uClibc yet. Downloads sources and applies patches. 26 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Toolchains useful resources eLinux.org toolchain page: http://elinux.org/Tool_Chains 29 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 Free Software tools for embedded systems GNU / Linux workstation Emulators 8 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 glibc http://www.gnu.org/software/libc/ License: LGPL C library from the GNU project Designed for performance, standards compliance and portability Found on all GNU / Linux host systems Quite big for small embedded systems: about 1.7 MB on Familiar Linux iPAQs (libc: 1.2 MB, libm: 500 KB) 36 Free Software tools for embedded systems © Copyright 20042008, Free Electrons Creative Commons AttributionShareAlike 2.5 license http:/ /free electrons.com Jan 24, 2008 chroot Available in all GNU/Linux distributions Usage: chroot <dir> [command] Runs a command or an interactive shell with a special root directory. Standard usage: Internet servers Services executed in chroot jails: even when compromised, the service cannot gain access to the rest of the system. Usage for embedded system development: Develop and test a new root filesystem on the development host. Very easy to use when the host and target have the same CPU instruction set. Used by LFS (Linux From Scratch). Also used by Scratchbox: Qemu makes the usage of target binaries transparent. / bin lib etc http / lib etc bin chroot jail ...
Ngày tải lên: 20/10/2013, 00:15
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