Technologie de l'information

Résumé

La technologie de l'information (TI), ou IT pour « information technology » en anglais, appelée aussi système informatique, désigne le domaine technique du traitement de l'information, souvent dans un contexte professionnel. Ce domaine a été soumis à un accord de libre échange par l'OMC appelé accord sur les technologies de l'information. Avec la numérisation des systèmes de communication et pour tenir compte de l'intégration de leur gestion aux technologies de l'information, le monde universitaire utilise l'expression « Technologies de l'information et de la communication » (TIC). Notes et références Catégorie:Technologie Catégorie:Informatique

Source officielle

https://fr.wikipedia.org/wiki/Technologie_de_l'information

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Labelling Game for Twitter Streams

Valérian Hanser

The main goal of this project is to build a mean and to populate a database with correct information regarding some decided pairings. This database will then be compared to the results of algorithms that process the same pairings, which provides a way to assess algorithms’ performance. The main focus is set on the following pairing, tweet messages and company. For a given set of tweet messages, we should be able to decide if either the word refers to the given company or not. In order to populate the database with such information, a web game application is used, which will allows any kind of users who wishes to play to give its feedback. We record those feedbacks and when enough feedbacks are collected, we may be able to build a subset of the correct information we want based on the feedbacks.

2010

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An Accountability Interface for the Internet

Olga Irzak

The Internet provides no information on the fate of transmitted packets, and end systems cannot determine who is responsible for dropping or delaying their traffic. As a result, they cannot verify that their ISPs are honoring their service level agreements, nor can they react to adverse network conditions appropriately. While current probing tools provide some assistance in this regard, they only give feedback on probes, not actual traffic. Moreover, service providers could, at any time, render their network opaque to such tools. We propose an explicit accountability interface, through which ISPs can pro-actively supply feedback to traffic sources on loss and delay, at administrative-domain granularity. Notably, our interface is resistant to ISP lies and can be implemented with a modest NetFlow modification. On our Click-based prototype, playback of real traces from a Tier-1 ISP reveals less than 2% bandwidth overhead. Finally, our proposal benefits not only end systems, but also ISPs, who can now control the amount and quality of information revealed about their internals.

2007

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Loss and Delay Accountability for the Internet

Olga Irzak

The Internet provides no information on the fate of transmitted packets, and end systems cannot determine who is responsible for dropping or delaying their traffic. As a result, they cannot verify that their ISPs are honoring their service level agreements, nor can they react to adverse network conditions appropriately. While current probing tools provide some assistance in this regard, they only give feedback on probes, not actual traffic. Moreover, service providers could, at any time, render their network opaque to such tools. We propose "AudIt," an explicit "accountability interface," through which ISPs can pro-actively supply feedback to traffic sources on loss and delay, at administrative-domain granularity. Notably, our interface is resistant to ISP lies and can be implemented with a modest NetFlow modification. On our Click-based prototype, playback of real traces from a Tier-1 ISP reveals less than 2% bandwidth overhead. Finally, our proposal benefits not only end systems, but also ISPs, who can now control the amount and quality of information revealed about their internals.

2007

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