Data presented on this page was collected through the hard work of the researchers listed under each dataset. Permission is granted to use or reproduce this data in any format or venue, although we request that you acknowledge these researchers in any published work, or equivalent distribution, using the bibtex entries provided. We make no warranties as to the quality or accuracy of any of the data linked from this page.

Clebsch-Gordan Series/Coefficients

This is a collection of Clebsch-Gordan coefficients computed using the EFM method by Chen et al. (1989) stored in the matlab file format.

There are four files each with CG coefficients computed up to a certain n and up to different irreducible levels.

  • cg_all.tar.gz: All possible CG coefficient matrices up to n=7 (37Mb)
  • cg_2_2.tar.gz: Up to (n-1,1)x(n-1,1) terms for n=3...75 (18Mb)
  • cg_2_4.tar.gz: Up to (n-1,1)x(n-2,1,1) terms for n=3...25 (39Mb)

Each file after untarring corresponds to some value of n. There are two cell arrays, partsi and partsj, which are lists of the partitions of n, up to the specified bandlimit enumerated with respect to the reverse lex order on partitions.

The important variables are z and C which are the CG series and coefficients respectively. z and C are both cell arrays, and C{i,j}, for example, returns the CG coefficient matrix corresponding to the tensor decomposition of the irreducible (partsi{i})x(partsj{j}).

Link Quality Estimation [download all]

Intel Research Pittsburgh
Smith Hall
Wean Hall
NSH Perlis Atrium

Using a network of approximately 38 moteiv Tmote Sky sensors, we collect link quality data between pairs of sensor motes deployed in complex indoor environments. For each link, we collect a success or failure of packet transmission. For each successful transmission, we collect a radio signal strength quantity known as RSSI, as well as a link quality indication (LQI) value.

We have data for four various single-floor indoor settings. Intel Research Pittsburgh is an open office environment with low-walled cubicles and glass walls. Smith Hall is a simpler and smaller open office environment compared to the Intel dataset. Wean Hall consists of long, narrow corridors with small, concrete-walled faculty offices. Finally, Perlis Atrium is a small and completely open environment.

WiFi Pittsburgh [download all]

The Pittsburgh Downtown Partnership has provided two free hours of wireless internet access to downtown Pittsburgh, the North Shore, and parts of the Hill District. We have collected approximately 20 hours of wardriving data throughout the coverage areas.

We used a sniffer application called NetStumbler on a Dell Inspiron 700m with a built in Intel PRO/Wireless 2915ABG network card to sense signal-to-noise ratio SNR for radio signals recieved from every access point (AP) within sensing range. A Garmin GPS18 was used to obtain position measurements.

The raw data maps GPS latitude and longitude coordinates to wireless signal strength measurements as provided by NetStumbler. Also provided is data sorted by AP where we report the average signal-to-noise ratio at each GPS location that could sense a particular access point.

WiFi CMU [download all]

We have collected wireless signal strength data from over 200 locations throughout the fifth floor of Wean Hall. The floorplan is a combination of spacious computer labs with glass and drywall; and relatively smaller classrooms and faculty/staff offices with block concrete walls.

We used a sniffer application called NetStumbler on a Dell Inspiron 700m with a built in Intel PRO/Wireless 2915ABG network card to sense signal-to-noise ratio SNR for radio signals recieved from every access point (AP) within sensing range.

The raw data consists of the NetStumbler textfile outputs collected for 3-4 minutes at each location in Wean Hall. We used matlab to sort the raw data into two formats maxAP and singleAP.MaxAPdata gives the MAC address and SNR of the strongest signal (highest SNR) available at each location where data was collected. SingleAPdata gives the SNR of each location in range of each particular access point (AP) on the fifth floor.

Intel Research Berkeley Sensor Network Data

The following page contains information about data collected from 54 sensors deployed in the Intel Berkeley Research lab between February 28th and April 5th, 2004.