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9 September 2008
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Six months ago we published a breakdown of the technologies occurring in several thousand tech job listings. We recently re-ran the experiment, once again using the Calais natural language processing engine. Last time around, we noted a shortcoming of Calais against this kind of data: it failed to identify several key programming languages like Ruby and Python. Fortunately the Calais folks have again demonstrated their commitment to being highly responsive to their user community with their new R3 release. Not only have they addressed this specific issue, but they’ve introduced two new tech-oriented categories (Programming Languages and Operating Systems) and a medical technology category (Medical Treatments) |
Top 25 Technologies, Programming Languages, Operating Systems, and Medical Treatments occurring in 5,000 tech job postings (*)
The following statistics can be used to approximate the relative popularity of various computer and medical technologies among employers in August 2008, with the caveat that the sampling was not done rigorously and is not necessarily representative of the broader US job picture.
| Technology |
% of listings |
| Ajax |
32.51 |
| Wi-Fi |
12.86 |
| Linux |
9.91 |
| Information Technology |
9.50 |
| Html |
8.65 |
| Java |
7.73 |
| Search Engine |
4.98 |
| Dom |
4.52 |
| Php |
4.50 |
| Unix |
4.17 |
| Telecommuting |
4.03 |
| Perl |
3.87 |
| Caching |
2.95 |
| Api |
2.91 |
| Operating Systems |
2.50 |
| Jsp |
2.07 |
| Protein Engineering |
1.97 |
| Biotechnology |
1.81 |
| Apache |
1.53 |
| Scsi |
1.48 |
| Actionscript |
1.34 |
| Web Technologies |
1.28 |
| Content Management |
1.12 |
| Soa |
0.94 |
| Xml |
0.89 |
| Programming Language |
% of listings |
| Ajax |
30.39 |
| Javascript |
7.26 |
| Java |
6.51 |
| Php |
5.53 |
| C++ |
3.64 |
| Sql |
3.09 |
| Perl |
2.58 |
| Asp.Net |
2.52 |
| C |
1.87 |
| Python |
1.81 |
| Ruby |
1.53 |
| Html |
1.06 |
| Xml |
0.81 |
| C# |
0.65 |
| Visual Basic |
0.57 |
| Microsoft Sql Server |
0.49 |
| D |
0.30 |
| V |
0.24 |
| Actionscript |
0.22 |
| Unix Shell |
0.22 |
| Visual Foxpro |
0.18 |
| R |
0.18 |
| Objective-C |
0.16 |
| Ruby On Rails |
0.14 |
| Vbscript |
0.12 |
| Operating System |
% of listings |
| Linux |
8.87 |
| Unix |
4.70 |
| Windows |
1.02 |
| Kronos |
0.45 |
| Windows 2000 |
0.45 |
| Mac Os X |
0.41 |
| Windows Nt |
0.37 |
| Microsoft Windows |
0.35 |
| Windows Server 2003 |
0.28 |
| Windows Mobile |
0.24 |
| Xp |
0.24 |
| Ubuntu |
0.18 |
| Openbsd |
0.14 |
| Os X |
0.14 |
| Vista |
0.14 |
| Solaris |
0.12 |
| As/400 |
0.12 |
| Integrity |
0.12 |
| Xp Pro |
0.12 |
| Windows Xp |
0.12 |
| Mandriva |
0.10 |
| Xubuntu |
0.08 |
| Suse |
0.08 |
| Hp-Ux |
0.08 |
| Gnu/Linux |
0.08 |
| Medical Treatment |
% of listings |
| Mediterranean Diet |
0.37 |
| Dialysis |
0.30 |
| Alternative Therapies |
0.12 |
| Massage |
0.12 |
| Cardiac Surgery |
0.12 |
| Day Surgery |
0.12 |
| Neck Surgery |
0.12 |
| Cpr |
0.10 |
| Parenteral Nutrition |
0.10 |
| Radiation |
0.10 |
| Chiropractic |
0.10 |
| Clinical Protocols |
0.08 |
| Heart Surgery |
0.08 |
| Total Parenteral Nutrition |
0.08 |
| General Surgery |
0.06 |
| Radiation Treatment |
0.06 |
| Pain Management |
0.06 |
| Physical Therapy |
0.06 |
| Pharmacotherapy |
0.06 |
| Insulin Pump |
0.06 |
| Massages |
0.04 |
| Medical Nutrition Therapy |
0.04 |
| Hydrotherapy |
0.04 |
| First Aid Procedures |
0.04 |
| Neurosurgery |
0.04 |
(*) Results based on a sample of 5000 job listings from major, tech-oriented job boards in August 2008.
One Response to '
Calais on Jobs Data - Part 2 '
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on September 17th, 2008 at 8:59 am
Mark -
Thanks for the kind and supportive words. We know how frustrating it can be to have gaps in functionality and really DO try to respond to requests that come from the user community. Please keep us posted on your experience with Calais and other ways we can enhance it.
Regards,