LiveRank : comment faire du neuf avec du vieux ?

  • Huynh T.
  • Mathieu F.
  • Viennot L.

Une capture du Web n'est valable qu'à l'instant où elle est faite et se périme ensuite petit à petit. Dans cet article, nous cherchons à savoir comment récupérer d'une ancienne capture un maximum de pages toujours vivantes en un minimum de requêtes. Plus précisément notre contribution est la suivante : nous posons le problème sous la forme du calcul d'un ranking, le LiveRank, qui essaie de séparer les pages mortes des pages vivantes ; nous proposons plusieurs LiveRanks basés sur le PageRank, avec ou sans apprentissage ; nous validons notre approche sur un graphe réel et évaluons numériquement le gain que peut apporter un bon LiveRank.

Recent Publications

January 01, 2018

Fair Dynamic Spectrum Management for QRD-Based Precoding with User Encoding Ordering in Downstream G.fast Transmission

In next generation DSL networks such as G.fast, employing discrete multi-tone transmission in high frequencies up to 212 MHz, the crosstalk among lines reaches very high levels. To precompensate the crosstalk in downstream transmission, QRD-based precoding has been proposed as a near-optimal dynamic spectrum management (DSM) technique. However, the performance ...

January 01, 2018

Practical Mitigation of Passive Intermodulation in Microstrip Circuits

This paper presents new experimental evidence and a novel practical approach for mitigation of passive intermodulation (PIM) in microstrip circuits fabricated on commercial printed circuit board laminates. The mechanisms of distributed PIM in microstrip circuits are reviewed and a phenomenology of PIM generation due to locally enhanced electromagnetic fields at ...

January 01, 2018

Efficient Cooperative HARQ for Multi-Source Multi-Relay Wireless Networks

In this paper, we compare the performance of three different cooperative Hybrid Automatic Repeat reQuest (HARQ) protocols for slow-fading half-duplex orthogonal multiple access multiple relay channel. Channel State Information (CSI) is available at the receiving side of each link only. Time Division Multiplexing is assumed, where each orthogonal transmission occurs ...