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Topic: Data stream


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  Stanford Stream Data Manager
Traditional database systems and data processing algorithms are ill-equipped to handle complex and numerous continuous queries over data streams, and many aspects of data management and processing need to be reconsidered in their presence.
The similarity between two streams is defined as the similarity between the sets of distinct elements seen over the two streams; the ratio of the size of the intersection to the size of the union.
We study clustering under the data stream model of computation where given a sequence of points, the objective is to maintain a consistently good clustering of the sequence observed so far using little memory and time.
www-db.stanford.edu /stream   (3333 words)

  
 Data stream - Wikipedia, the free encyclopedia
This article is about the general meaning of the term "data stream".
For the UK-specific DSL technology called "Data stream", see the IP Stream article.
In telecommunications, a data stream is a sequence of digitally encoded coherent signals (packets of data or datapackets) used to transmit or receive information that is in transmission.
en.wikipedia.org /wiki/Data_stream   (131 words)

  
 Codec - Wikipedia, the free encyclopedia
Codecs encode a stream or signal for transmission, storage or encryption and decode it for viewing or editing.
Many multimedia data streams need to contain both audio and video data, and often some form of metadata that permits synchronization of the audio and video.
Each of these three streams may be handled by different programs, processes, or hardware; but for the multimedia data stream to be useful in stored or transmitted form, they must be encapsulated together in a container format.
en.wikipedia.org /wiki/Codec   (542 words)

  
 EP364384 Ibm european software patent - Method of managing marker entities within a document data stream. - Gauss   (Site not responding. Last check: 2007-10-03)
A define marker structure control is utilized within the data stream to specify in a data type independent fashion the physical structure and content of a marker entity as well as defining any desired relationship of a marker entity with another entity within the data stream.
In the event data stream entity accessed at decision block 74 is a reference to a marker entity, then block 76 is utilized to illustrate the modification and/or manipulation of the marker entity in response to controls which are present within the data stream.
Marker entity data in accordance with the present invention is applicable to multiple types of data and may not be limited merely to textual data.
gauss.ffii.org /View/EP364384   (3343 words)

  
 IBM Research | IBM Research | Stream Data Mining   (Site not responding. Last check: 2007-10-03)
Stream mining algorithms are being developed to discover useful knowledge from data as it streams in -- a process that isn't as straightforward as it might seem.
In clustering, for example, the data points in the stream are condensed into a moderate number of micro-clusters and the evolution of micro-clusters is tracked instead of the infinite number of individual data points.
An effective algorithm for data streams is expected to have the capability of resource-awareness, which means that it is highly desirable for all resources in a streaming environment to be adaptively allocated.
domino.research.ibm.com /comm/research.nsf/pages/r.kdd.innovation.html   (1233 words)

  
 Fork (filesystem) - Wikipedia, the free encyclopedia
However the feature was not limited to GUI data, so additional uses were found, such as splitting a word processing document into content and presentation, then storing the presentation information in the resource fork.
Multiple data streams also allow Macintosh clients to attach to and use Netware servers.
You can have data loss when sending files via fork unaware channels (e-mail, filesystems without multiple forks support -or even when copying between filesystems with forks support, if the program that made the copy is unaware-, compressed archives) and not be aware of that.
en.wikipedia.org /wiki/Alternate_data_stream   (739 words)

  
 Data stream: Facts and details from Encyclopedia Topic   (Site not responding. Last check: 2007-10-03)
(a data stream is a sequence of digitally encoded signals used to represent information information quick summary:
Information is a term with many meanings depending on context, but is as a rule closely related to such concepts as meaning, knowledge, instruction,...
Zero-bit insertion is a bit-stuffing technique used in data transmission protocols to ensure that six consecutive "1" bits never appear between the two flags...
www.absoluteastronomy.com /encyclopedia/d/da/data_stream.htm   (572 words)

  
 Stream Data Management - Kluwer Academic Publishers   (Site not responding. Last check: 2007-10-03)
Data for these applications is best modeled via streams of data that requires continuous monitoring, rather than persistent data stored in relational tables.
Additionally, to monitor data streams and alert humans (or other software) of abnormal activity, stream management systems need to move from the currently dominant model of being a passive repository to become more active.
An additional need is for systems managing stream data is to cater to real-time requirements since the decisions made on the basis of the data need to be acted upon in close to real-time, probably with some Quality-of-Service (QoS) guarantees.
www.cs.uno.edu /~nauman/streamBook   (642 words)

  
 BOREAS -- Stream Gauge Data Documentation (HYD-9)
This stream gauge data was collected by the HYD-9 science team to support their research into meltwater supply to the soil during the spring melt period.
This data was also collected for their research into the evolution of soil moisture, evaporation, and runoff from the end of the snowmelt period through freeze up.
At frequent intervals during the monitoring period the flow of the stream (using the propeller and electromagnetic metering devices), the voltage produced by the float tube, and the true height of the stream measured from a staff gauge were recorded.
www-eosdis.ornl.gov /BOREAS/bhs/Documents/HYD09_stream_gauge.html   (2999 words)

  
 Stream Team
Data stream processing is a topic of much current interest among database researchers.
Our current research focus is on the real-time data processing issues, such as QoS- and memory-aware operator scheduling, semantic load shedding for coping with transient spikes in incoming data rates, as well as novel hybrid data storage organizations that would seamlessly and efficiently combine pull- and push-based data processing.
In the STREAM project, we are reinvestigating data management and processing in the presence of multiple, continuous, rapid, time-varying data streams.
www-db.stanford.edu /sdt   (766 words)

  
 WSDOT - WSDOT Wireless Data Feed
History: This data stream was proposed by 3Com Palm Computing Inc. The Palm VII organizer has a built-in wireless interface that provides communication to the Internet.
The new stream is a highly-compressed version of the WebFlow data currently provided at webflow.wsdot.wa.gov. The new wireless data stream is typically less than 200 bytes.
Data Contents: The wireless data files contain a version number that relates to the latest version available, the time/date of the data, and a Huffman-encoded data stream that contains a code that represents the traffic condition for each station contained in the station database (.STA).
www.wsdot.wa.gov /PugetSoundTraffic/palmflow/SeaTrafficHistory.htm   (566 words)

  
 Information on GM's 160 baud ALDL data stream
When the ALDL data pin is high, the CE lamp is off, this is the normal state of the CE lamp and data pin.
This combination of 9 ones cannot occur within the data part of a frame as each normal start bit is a 0 and at most we could expect to see 8 ones (a FFH character) both followed and preceeded by a 0 start bit.
However the data rate is relatively slow and it can be fed into a PC's serial port and interpreted even on a machine as slow as the original IBM XT.
www.techedge.com.au /vehicle/aldl160/aldl160b.htm   (1342 words)

  
 The Nile Project @ Purdue: Data Stream Management System (DSMS)
Data is produced over time in an unpredictable and bursty fashion, representing streams of network traffic, retail transactions, peptides spectrum, and sensor-measured values.
Streaming applications are usually characterized by transient relations, append mode for data updates, continuous queries, approximate answers, and one-pass evaluation.
The premise that we set forth is that the system would need to address major requirements for supporting streaming applications and be applicable to a large array of streaming applications.
www.cs.purdue.edu /Nile   (373 words)

  
 Stream Survey Data
Finding data on a particular stream or body of water is based on an address or code.
The DAR codes for the streams are similar to the first four digits of the HSA code (0-0-00.00.0) however an extra digit was added to the stream section of the HSA code in order to incorporate intermittent streams and drainage basins that would be added at a later date.
Once the first search by either stream or tributary name is accomplished, then you'll need to know what island and hydrographic unit the stream or tributary are located on.
www.hawaii.gov /dlnr/dar/streams/stream_data.htm   (515 words)

  
 [No title]
PCL 4 does not use any compression mode, the data is sent as a Bit Map image to the printer, this limitation significantly reduces the OnePrint SE performance since the output data stream is larger in Bit Map image.
The OnePrint SE produced an ISO data stream, this data is sent as a Bit Map image to the printer.
The use of a Bit Map image significantly reduces the OnePrint SE performance since the output data stream is larger in Bit Map image.
www.lognet-systems.com /support/faq_netprint.html   (655 words)

  
 Data Stream Management System - Wikipedia
Ein Data Stream Management System (DSMS) ist ein Datenbanksystem zur Verwaltung von kontinuierlichen Datenströmen.
Data Stream Management Systeme sind in der Datenbankwelt noch relativ neu.
Golab L., Ozsu M.T. Issues in data stream management, ACM SIGMOD Record Volume 32, Issue 2, pp.5-14, June 2003.
de.wikipedia.org /wiki/Data_Stream_Management_System   (772 words)

  
 NTFS Data Streams - Windows Alternate Data Stream, NP.EXE
Streams can attach themselves to directories as well as files.
Similarly, image files, audio files, or any other stream of data can be hidden in ADSs.
Here is a free program to detect alternate data streams.
www.auditmypc.com /freescan/readingroom/ntfsstreams.asp   (317 words)

  
 Windows NTFS Alternate Data Streams
The purpose of this article is to explain the existence of alternate data streams in Microsoft Windows, demonstrate how to create them by compromising a machine using the Metasploit Framework, and then use freeware tools to easily discover these hidden files.
The data fork is for the contents of the document while the resource fork is to identify file type and other pertinent details.
Please note that for alternate data streams to be useful in the wild, there still needs to be an attack vector with an exploitable vulnerability.
www.securityfocus.com /infocus/1822   (2916 words)

  
 Alternate Data Stream (ADS) - addict3d.org   (Site not responding. Last check: 2007-10-03)
If data is stored in an alternate data stream attached to a file (such as the thumbnail of an image) or directory when this file or directory is wiped the information contained within the alternate data stream will be left intact on the hard drive.
Alternate data streams also provide an ideal location to keep attack tools, snippets of virus code and so forth for attackers and viruses, in fact some virus scanners do not scan alternate data streams unless specifically configured to do so (often labeled as "scan all files" or similar).
Alternate data streams are only available on NTFS file systems, making home users with older systems (Windows95, Windows98, WindowsME) immune to this problem, but newer systems based on WindowsXP are capable of using NTFS, thus potentially exposing customers to risk.
www.addict3d.org /index.php?page=viewarticle&type=security&ID=243   (1956 words)

  
 onlineshop data stream   (Site not responding. Last check: 2007-10-03)
ADSP Apple Talk Data Stream Protocol Provides a "pipe" for the reliable exchange of data between two applications.
I am writing a client-server application and I am trying to write the object `KeyPair` to the data stream to be read at the client application (the key pair is generated using IAIK DH key pair generator).
data stream From: Rachel" Prev by Date: iaik-jce] Problem while generating private key Next by Date: iaik-jce] java.security.InvalidKeyException: Previous by thread: iaik-jce] Write KeyPair to the data stream Next by thread: AW: [iaik-jce] Write KeyPair to the data stream Index(es): Date Thread......
www.muslimstudent.org.uk /data-stream-560265.html   (747 words)

  
 IBM Networking | 5250 Express Data Stream
Enhanced Data Stream Support may not be available on all current software offerings.
The 5250 Express functions include the 5250 Express Data Stream.
The 5250 Express Data Stream is not supported on the 5250 Express adapters.
www.networking.ibm.com /525xpres/525xsoft.html   (801 words)

  
 JEP-0037: DSPS - Data Stream Proxy Service
Data Stream Proxy Service (DSPS) is designed to be a common stream protocol for multicast (unicast as special case) over P2S2P (P2P as special case) connections.
Type and structure of the data must be negotiated by the peers separately (presumably via the normal XML message stream or within blocks).
Stream exists from its "create"ion time to the time when there are no more "master" peers registered with the stream.
www.jabber.org /jeps/jep-0037.html   (4728 words)

  
 NTFS.com Alternate Data Stream.Multiple Data Streams.
NTFS supports multiple data streams, where the stream name identifies a new data attribute on the file.
A data stream, then, is a unique set of file attributes.
When you copy an NTFS file to a FAT volume, such as a floppy disk, data streams and other attributes not supported by FAT are lost.
www.ntfs.com /ntfs-multiple.htm   (180 words)

  
 ENCRYPTION OVERVIEW
Data Stream encryption can be enabled on a global or a per user basis with undetectable performance loss.
Complete Data Stream encryption is available on a global or per user basis when using the Georgia SoftWorks Telnet Client.
The shortcut may be modified to pass Data Stream Encryption parameter.
www.georgiasoftworks.com /docs/encryption_overview.htm   (779 words)

  
 JSI Tip 2808. Alternate Data Stream tool.   (Site not responding. Last check: 2007-10-03)
We first discussed Alternate Data Streams in tip 0483.
CrucialADS freeware is a GUI based tool designed to quickly and easily detect the presence of Alternate Data Streams in NTFS files and directories.
NTFS files contain one primary stream and, optionally, one or more alternate data streams.
www.jsiinc.com /SUBF/TIP2800/rh2808.htm   (251 words)

  
 The Britannica Stream Cipher
This cipher differs from the usual stream cipher in the open literature in that the data are not merely combined with an RNG keystream, but are themselves operated on by shift register techniques.
Good stream ciphers aren't normally additive-key systems; the stock example is a feedback shift register, where plaintext feeds one end and ciphertext is produced at the other end.
By the birthday paradox, we expect to see some "matching" pairs of query outputs, where by a "match" I mean that two conditions hold: (1) the R register contents are the same for both queries, and (2) the next few bits of F output are the same at both locations.
www.ciphersbyritter.com /NEWS5/BRITSTRM.HTM   (7206 words)

  
 Mining Data Streams Bibliography
Ding, Q. Ding, and W. Perrizo, Decision Tree Classification of Spatial Data Streams Using Peano Count Trees, Proceedings of the ACM 124 Symposium on Applied Computing, Madrid, Spain, March 2002, pp.
Kleinberg, Bursty and Hierarchical Structure in Streams, Proceedings of the eighth ACM SIGKDD international conference on Knowledge discovery and data mining, Edmonton, Alberta, Canada, 2002.
Load Shedding on Data Streams, In Proceedings of the Workshop on Management and Processing of Data Streams (MPDS 03), San Diego, CA, USA, June 8, 2003.
www.csse.monash.edu.au /~mgaber/WResources.htm   (3037 words)

  
 data stream - Ask.com Search
A menu screen is available that enables you to record data, replay the recorded data, view any...
It has been designed around small DSP units that can be chained together to operate on the sound data stream.
Each data bit starts as a falling edge of the ALDL data stream - positioned in the diagram at the left most end of the 6250 uSec measuring bar.
web.ask.com /web?q=data+stream&qsrc=62&page=3¶ms=teoma%3dy%3d&qid=E562E4BB58A3E448A44540C0888D547F&qte=0   (302 words)

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