Syscussion February 2018

syscussion@lists.cslab.ece.ntua.gr

4 participants
5 discussions

upcoming syscussion: struc2vec: Learning Node Representations from Structural Identity
by Tasos Bakogiannis 27 Feb '18

27 Feb '18

Καλησπέρα, την Παρασκευή 2/3/18 θα παρουσιαστεί το παρακάτω paper: Title: struc2vec: Learning Node Representations from Structural Identity Authors: Leonardo F. R. Ribeiro, Pedro H. P. Saverese, Daniel R. Figueiredo Abstract: Structural identity is a concept of symmetry in which network nodes are identified according to the network structure and their relationship to other nodes. Structural identity has been studied in theory and practice over the past decades, but only recently has it been addressed with representational learning techniques. This work presents struc2vec, a novel and flexible framework for learning latent representations for the structural identity of nodes. struc2vec uses a hierarchy to measure node similarity at differ- ent scales, and constructs a multilayer graph to encode structural similarities and generate structural context for nodes. Numerical experiments indicate that state-of-the-art techniques for learning node representations fail in capturing stronger notions of structural identity, while struc2vec exhibits much superior performance in this task, as it overcomes limitations of prior approaches. As a con- sequence, numerical experiments indicate that struc2vec improves performance on classification tasks that depend more on structural identity. Link: http://www.kdd.org/kdd2017/papers/view/struc2vec-learning-node-representati… Τάσος.

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syscussion schedule.
by Tasos Bakogiannis 21 Feb '18

21 Feb '18

Καλημέρα, ήθελα να ρωτήσω, επειδή δεν μου είναι πολύ σαφές, ποια είναι η περιοδικότητα του syscussion. Είναι κάθε 1 ή 2 εβδομάδες; Ρωτάω γιατί είτε αυτή είτε την επόμενη φορά θα πρέπει να παρουσιάσω κι εγώ. Τάσος.

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Next syscussion: Titian: Data Provenance Support in Spark
by Evie Kassela 15 Feb '18

15 Feb '18

Kαλησπέρα, Το paper που θα παρουσιαστεί στο αυριανό syscussion είναι: *Title:* Titian: Data Provenance Support in Spark *Authors:* Matteo Interlandi, Kshitij Shah, Sai Deep Tetali, Muhammad Ali Gulzar, Seunghyun Yoo, Miryung Kim, Todd Millstein, and Tyson Condie *Abstract:* Debugging data processing logic in Data-Intensive Scalable Computing (DISC) systems is a difficult and time consuming effort. Today’s DISC systems offer very little tooling for debugging programs, and as a result programmers spend countless hours collecting evidence (e.g., from log files) and performing trial and error debugging. To aid this effort, we built Titian, a library that enables data provenance—tracking data through transformations—in Apache Spark. Data scientists using the Titian Spark extension will be able to quickly identify the input data at the root cause of a potential bug or outlier result. Titian is built directly into the Spark platform and offers data provenance support at interactive speeds—orders-of-magnitude faster than alternative solutions—while minimally impacting Spark job performance; observed overheads for capturing data lineage rarely exceed 30% above the baseline job execution time. Παρουσιάστηκε στο VLDB 2016. Eύη -- Evdokia Kassela PhD Candidate Computing Systems Laboratory, School of ECE National Technical University of Athens

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talk 16 Feb 2017
by Dimitrios Tsoumakos 13 Feb '18

13 Feb '18

δεν έχει υπάρξει κανένα update στο spreadsheet ούτε για την ερχόμενη αλλά και μελλοντικές ομιλίες. Παρακαλώ να ενημερωνόμαστε εγκαίρως για καλύτερη οργάνωση/προσέλευση. Εάν δεν υπάρχει ενδιαφέρον δυστυχώς ο "θεσμός" θα ακυρωθεί. Δ. -- Dimitrios Tsoumakos, PhD Assistant Professor, Department of Informatics, Ionian University Senior Researcher Computing Systems Laboratory, National Technical Un. of Athens http://www.cslab.ece.ntua.gr/~dtsouma

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Syscussion Presentations List Spring-Summer 2018
by Dimitrios Tsoumakos 11 Feb '18

11 Feb '18

Καλησπέρα σε όλους. Έφτιαξα ένα GDrive excel ώστε να έχουμε κάπου το πρόγραμμα των ομιλιών. Παρακαλώ όπως συμπληρώσουμε όλοι μας προηγούμενες κ επόμενες ομιλίες και να τηρούμε όσο μπορούμε το πρόγραμμα: https://docs.google.com/spreadsheets/d/1Wu16IyVRMOEyqDf4ZWwYHxQS7hor4Z-0Ye7… Δεδομένου των εβδομάδων, θέλουμε τουλάχιστον 1 ομιλητή ανά 15μερο. Επίσης, μας ενδιαφέρουν papers, system demos, project results/updates, paper submissions, presentation/defense rehearsals στον τομέα διαχείρισης δεδομένων και μεγάλου όγκου δεδομένων/συστημάτων. Καλή συνέχεια, Δ. -- Dimitrios Tsoumakos, PhD Assistant Professor, Department of Informatics, Ionian University Senior Researcher Computing Systems Laboratory, National Technical Un. of Athens http://www.cslab.ece.ntua.gr/~dtsouma

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Syscussion February 2018