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2014-11-24: dblp reaches new milestones

Since the last weekend, the dblp computer science bibliography lists more than 2.8 million publications . See also more statistics about dblp.

2014-11-17: dblp usage statistics

We often receive questions like "How many users are using dblp?" or "How many hits do you get per day?" While we do not have a live statistic for these questions like the one we have for our data stock (yet) we can of course share the usage statistics we learn from our web server's log files.

There are three "official" dblp servers which are updated and synchronized on a daily basis:

• server Trier 1: http://informatik.uni-trier.de/~ley/db
• server Trier 2: http://dblp.uni-trier.de/
• server Dagstuhl: http://dblp.dagstuhl.de/

These servers do show a very different rate of usage, with Trier 1 being the by far most widely known URL. This is of course due to the fact that server Trier 1 is ranked so highly by Google. Server Trier 1 is currently still hosting the old dblp web system, while servers Trier 2 and Dagstuhl are already hosting a beta version of the brand new web system. (A full update to the new web system is scheduled for early 2015.)

The following figures have been collected during October 2014. These figures ignore the traffic caused by known bots and crawlers.

Average number of user sessions (visits) per day on server ...

• Trier 1: 27,194 sessions
• Trier 2: 4,653 sessions
• Dagstuhl: 602 sessions

Average number of page views per day on server ...

• Trier 1: 192,972 pages
• Trier 2: 53,701 pages
• Dagstuhl: 16,638 pages

Average number of page views per user session on server ...

• Trier 1: 7.1 pages per session
• Trier 2: 11.5 pages per session
• Dagstuhl: 27.6 pages per session

Total number of distinct users (i.e., IPs) in October 2014 on server ...

• Trier 1: 430,890 IPs
• Trier 2: 74,818 IPs
• Dagstuhl: 6,782 IPs

Total amount of data served in October 2014 (in parenthesis: including bots) on server ...

• Trier 1: 999.1 GB (4,166.2 GB)
• Trier 2: 220.7 GB ( 397.5 GB)
• Dagstuhl: 26.8 GB ( 36.3 GB)

2014-08-06: Another milestone reached

dblp now indexes over 2.7 million computer science publications. For an overview of the development of the dblp data set, have a look at our statistics pages.

2014-07-02: H. Vincent Poor is the first to reach 1000 records

Harold Vincent Poor, dean of the School of Engineering and Applied Science at Princeton University, is the first person to reach 1000 records in dblp. The 1000th record has been reached with the addition of the latest issue of the IEEE Transactions on Signal Processing to dblp.

2014-05-02: dblp reaches new milestones

Since the past week, the dblp computer science bibliography now lists more than 2.6 million publications (and is still growing strong).

Coincidentally, the number of authors in dblp surpassed the 1.4 million mark on almost the very same day.

2014-01-15: 2.5 million

dblp now lists more than 2.5 million publications.

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