Monday, March 26, 2012

Correlating Financial Time Series with Micro-Blogging Activity


"Correlating Financial Time Series with Micro-Blogging Activity"


We study the problem of correlating micro-blogging activity with stock-market events, defined as changes in the price and traded volume of stocks. Specifically, we collect messages related to a number of companies, and we search for correlations between stock-market events for those companies and features extracted from the micro blogging messages. The features we extract can be categorized in two groups. Features in the first group measure the overall activity in the micro-blogging platform, such as number of posts, number of re-posts, and so on. Features in the second group measure properties of an induced interaction graph, for instance, the number of connected components, statistics on the degree distribution, and other graph-based properties.
We present detailed experimental results measuring the correlation of the stock market events with these features, using Twitter as a data source. Our results show that the most correlated features are the number of connected components and the number of nodes of the interaction graph. The correlation is stronger with the traded volume than with the price of the stock. However, by using a simulator we show that even relatively small correlations between price and micro-blogging features can be exploited to drive a stock trading strategy that outperforms other baseline strategies.

get the paper here.

IEEE Network March 2012

IEEE Network March 2012's topic on optical networks.

Next-Generation Optical Access Networks: Dynamic Bandwidth Allocation, Resource Use Optimization, and QoS Improvements


Network Operator Requirements for the Next Generation of Optical Access Networks


NG-PONs 1&2 and Beyond: The Dawn of the Über-FiWi Network


Next Generation Optical-Wireless Converged Network Architectures


Energy Efficiency in the Extended-Reach Fiber-Wireless Access Networks


Energy-Efficient PON with Sleep-Mode ONU: Progress, Challenges, and Solutions


Adaptable Access System: Pursuit of Ideal Future Access System Architecture


Medium Access Control for the Next-Generation Passive Optical Networks: The OLIMAC Approach

Friday, March 23, 2012

Optimizing for video storage networking

"Optimizing for Video Storage Networking With Recommender Systems"


Driven mainly by its adoption as a new media distribution platform for content providers and its ubiquitous availability for the end user’s media production and consumption, the Internet is rapidly reshaping. In particular, the stakeholders in the content distribution market are considering exploiting content delivery networks (CDNs) to play a key enabling role allowing them  to become part of related value chains. In this paper we discuss how such CDNs rely on autonomous algorithms to optimally use the storage resources, i.e., reducing bandwidth on feeder links, while providing quality of experience (QoE) to the end user.

get the paper here.



Video delivery using network aware transcoding in an LTE network


"Mobile Video Delivery Using Network Aware Transcoding in an LTE Network"


Delivering video over mobile wireless networks presents several unique challenges. Limited bandwidth and packet delay variation can cause artifacts, “picture freezes,” or blockages that make a video experience on a mobile client unacceptable. In this paper we address techniques to use feedback from the wireless network (congestion, channel conditions, content, user profiles) to adjust both the video stream and the delivery mechanism to dramatically increase the level of service and experience.

get the paper here.

International Expert Symposium in Fukushima: Radiation and Health Risks

Selected articles from the International Expert Symposium in Fukushima: Radiation and Health Risks (11–12 September 2011)

get the paper here.

Thursday, March 22, 2012

SVC-based HTTP adaptive streaming

"SVC-Based HTTP Adaptive Streaming"


HTTP adaptive streaming (HAS) is rapidly evolving into a key video delivery technology, supported by implementations from Microsoft, Apple, and Adobe, and actively pursued by standardization organizations.

get the paper here.

Subjective video quality assessment


"Subjective Video Quality Assessment of HTTP Adaptive Streaming Technologies"



HTTP adaptive steaming (HAS) is becoming ubiquitous as a reliable method of delivering video content over the open Internet to a variety of devices from personal computers (PCs), to tablets, game consoles, and smartphones. HAS is able to adapt to both the available bandwidth and the display requirements
by trading-off video quality.


get the paper here.

Indonesia IX


Indonesia has several IXs. 
OIXP (Open IX peering) is the biggest one.
Here's the traffic plot:

OIXP 5 minutes Average Traffic
x-axis is time on month-year format.
y-axis is traffic in gigabit per second.
source from lg.mohonmaaf.com

Your Facebook Deactivated

I found interesting paper on arxiv.
"Your Facebook Deactivated Friend or a Cloaked Spy (Extended Abstract)"
get the paper from here.

Tuesday, March 20, 2012

Do We Need Video Systems Beyond HDTV?


Do We Need Video Systems Beyond HDTV?

get the paper here.

Next-Generation applications on cellular networks


Next-Generation Applications on Cellular Networks: Trends,Challenges, and Solutions.


This paper attempts to offer some guidelines, based on recent research in the industry and academia in these areas, toward the design and development of successful mobile applications that can utilize the capabilities of the next generation of cellular networks.

get the paper here.

Frontiers of wireless and mobile communications

"Frontiers of Wireless and Mobile Communications"


This paper provides a perspective of some of the research frontiers of wireless and mobile communications.

get the paper here.

Evolution of video processing

"The Evolution of Video Processing Technology and Its Main Drivers"

This paper tell us the challenges of video processing and the three main drivers.

get the paper here.

Evolution optical networking towards digital media


"Evolution of Optical Networking Toward Rich Digital Media Services"


This paper tell us the importance of optical networking to support high quality video.

get the paper from here.

Understanding implications of online learning


Understanding the Implications of Online Learning for Educational Productivity:
get the report here.

Total Internet Exchange Average Peak Traffic in Japan


Source from Ministry of Internal Affairs and Communications Japan.
The average peak Internet Exchange traffic in Japan is shown as follows:
Total Internet Exchange Average Peak Traffic in Japan

Since January 2011 the measurement included Equinix's BBIX.

Monday, March 19, 2012

klikbca dot com

Today, I found something wrong here :)


klikbca.com INFO [DELEGATION:NS_AT_PARENT] ns1.angkasa.net.id,ns1.cbn.net.id,ns2.cbn.net.id,ns3.angkasa.net.id

klikbca.com INFO [DELEGATION:NS_AT_CHILD] ns1.angkasa.net.id,ns1.cbn.net.id,ns2.angkasa.net.id,ns2.cbn.net.id,ns3.angkasa.net.id,ns4.angkasa.net.id



klikbca.com ERROR [NAMESERVER:NO_UDP] ns1.angkasa.net.id;202.6.209.1;klikbca.com

klikbca.com ERROR [NAMESERVER:NO_TCP] ns1.angkasa.net.id;202.6.209.1;klikbca.com


klikbca.com WARNING [CONSISTENCY:SOA_SERIAL_DIFFERENT] 4


One of the best bank in Indonesia can not manage their naming?  :)
I hope they can fix it as soon as possible.

Friday, March 16, 2012

Wednesday, March 14, 2012

Dual stack IPv4/IPv6 RTT from AS4717 to Indonesia

I am currently measuring RTT from ASN4717 to several dual stack IPv4/IPv6 servers in Indonesia for every 5 minutes.

biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6
biznetipv6

It is clear that IPv6 RTTs are not symmetric with IPv4 RTTs because of different path/routing between IPv4 and IPv6. NTT and CBN are exception. Their paths are symmetric from AS4717.

Above graphs are also available on http://sfc-monitor.ai3.net/~dikshie/indonesia/ (IPv6 only)
If you need the data (only available in RRD format) please contact me.

Tuesday, March 13, 2012

Internet traffic in Japan

Source from Ministry of Internal Affairs and Communications Japan.


Figure 1. Measurement Map
There are 6 ISPs involved in this study.
Figure 1 explanation as follows:
A1: Broadband users traffic.
A2: Dialup, dedicated line, and data center traffic.
B1: Peering traffic with Internet Exchange (IX).
B2: Peering traffic with domestic ISPs.
B3: Peering traffic with overseas ISPs.

Based on figure.1 above, Total amount traffic in Japan as follows:


Year Month A1 (IN) Gbps A1 (OUT) Gbps
2004 9 98.1 111.8
2004 10 108.3 124.9
2004 11 116.0 133.0
2005 5 134.5 178.3
2005 11 146.7 194.2
2006 5 173.0 226.2
2006 11 194.5 264.2
2007 5 217.3 306.0
2007 11 237.2 339.8
2008 5 269.0 374.7
2008 11 302.02 432.9
2009 5 349.5 501.0
2009 11 373.6 539.7
2010 5 321.9 536.4
2010 11 311.1 593.0
2011 5 302.5 662.0
2011 11 - -


Year Month A2 (IN) Gbps A2 (OUT) Gbps
2004 9 14.0 13.6
2004 10 15.0 14.9
2004 11 16.2 15.6
2005 5 23.7 23.9
2005 11 36.1 29.6
2006 5 42.9 38.3
2006 11 50.7 46.7
2007 5 73.8 57.8
2007 11 85.4 63.2
2008 5 107.085.0
2008 11 122.488.7
2009 5 154.4121.4
2009 11 169.4127.6
2010 5 178.8131.2
2010 11 190.1147.5
2011 5 193.9174.4
2011 11 - -


Year Month B1 (IN) Gbps B1 (OUT) Gbps
2004 9 35.9 30.9
2004 10 36.3 31.8
2004 11 38.0 33.0
2005 5 47.9 41.6
2005 11 54.0 48.1
2006 5 66.2 60.1
2006 11 68.4 62.3
2007 5 77.4 70.8
2007 11 93.5 83.4
2008 5 95.788.3
2008 11 107.5102.5
2009 5 111.7104.9
2009 11 114.319.8
2010 5 94.191.0
2010 11 90.191.6
2011 5 87.086.9
2011 11 - -


Year Month B2 (IN) Gbps B2 (OUT) Gbps
2004 9 48.2 37.8
2004 10 53.1 41.6
2004 11 55.1 43.3
2005 5 73.3 58.4
2005 11 80.9 68.1
2006 5 94.9 77.6
2006 11 107.6 90.5
2007 5 124.5 108.4
2007 11 129.0 113.3
2008 5 141.2119.4
2008 11 155.6132.3
2009 5 185.0155.4
2009 11 209.5154.3
2010 5 194.8121.4
2010 11 198.7117.2
2011 5 254.2134.6
2011 11 - -


Year Month B3 (IN) Gbps B3 (OUT) Gbps
2004 9 25.3 14.1
2004 10 27.7 15.4
2004 11 28.5 16.7
2005 5 40.1 24.1
2005 11 57.1 39.8
2006 5 68.5 47.8
2006 11 94.5 57.8
2007 5 116.4 71.2
2007 11 133.7 81.8
2008 5 152.694.4
2008 11 176.1110.8
2009 5 213.1126.4
2009 11 248.2148.3
2010 5 286.9155.5
2010 11 330.1144.9
2011 5 420.9160.5
2011 11 - -


DNSSEC

I configured DNSSEC for ai3.net zone several months ago but I still can not register ai3.net's DNSKey to .net root servers.
Last week, I registered ai3.net's DNSKey to dlv.isc.org [1] but the trust chain is still broken.

Reference:
[1] https://dlv.isc.org

Internet Users in Japan

Source from Ministry of Internal Affairs and Communications (MIC)
http://www.soumu.go.jp/johotsusintokei


Year Total users Penetration rate
1998 16940000 13.4%
1999 27060000 21.4%
2000 47080000 37.1%
2001 55930000 46.3%
2002 69420000 57.8%
2003 77300000 64.3%
2004 79480000 66.0%
2005 85290000 70.8%
2006 87540000 72.6%
2007 88110000 73.0%
2008 90910000 75.3%
2009 94080000 78.0%
2010 94620000 78.2%

Slaving root zone

Old topic to be discussed.

Slaving the following zones from the root name servers has some significant advantages:
1. Faster local resolution for your users
2. No spurious traffic will be sent from your network to the roots
3. Greater resilience to any potential root server failure/DDoS


On the other hand, this method requires more monitoring than the hints file to be sure that an unexpected failure mode has not incapacitated your server.  Name servers that are serving a lot of clients will benefit more from this approach than individual hosts.

great! now Bind 9.9.0 supports raw file for slave zone.

References:
[1] FreeBSD's /etc/namedb/named.conf
[2] https://www.isc.org/software/bind/new-features/9.9

ICT Responses to the Great East Japan Earthquake

Presentation "ICT Responses to the Great East Japan Earthquake" is available on:
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/111208_1.pdf

Cloud Services in Japan

Presentation "Cloud Services in Japan" is available on
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/111102_1.pdf

Law and Policy for Broadband Deployement in Japan

Presentation "Law and Policy for Broadband Deployment in Japan" is available on
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/100408_1.pdf

Japan National Broadband Policies

Presentation of Japan National Broadband Policies is available on:
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/091019_1.pdf

Maintaining Communications Capabilities during Major Natural Disasters and other Emergency Situations

Final report from Internal Affairs and Communications "Maintaining Communications Capabilities during Major Natural Disasters and other Emergency Situations" is available on
http://www.soumu.go.jp/main_content/000146938.pdf