3apo
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3 years ago
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on: Why Tesla removed radar and ultrasonic sensors [video]
I feel the other reason is that Tesla has not figured out a way to put Radar into their ML pipeline. If you take the Range-Doppler Map from the radar as the 'pixel' map, that data is inherently very dependent on the scenario and the radar sensor intrinsic parameters. This variability in what the radar sees in the RD space is what makes this a challenge for ML/AI pipelines.
If Tesla were to 'fuse' information from these sensors in the object track level - I believe they will be less susceptible to this variability.
3apo
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9 years ago
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on: Live Presidential Forecast
For poll statistics this is like cigarettes not causing cancer moment
3apo
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11 years ago
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on: Ask HN: All of you working with Big Data, what is your Data?
Same. >1TB/hour of vehicles and sensor data. Including video, gps and radar
3apo
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11 years ago
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on: Google Self-Driving Car Project's first vehicle prototype
What you say is true - city driving is complicated with too many decisions to make, but it does not need a very optimized controller to control the car through those scenarios. Changing a lane at 15-25MPH is far more easier than on a turning highway with merging traffic at 55-60MPH. At that speed the controller would not only need to safely execute the maneuver but also stabilize the vehicle in the event it needs to come to a halt or take an evasive action.
Moreover if there is say some uncertainty in the sensor readings at 25mph, that is multiplied by many factors at higher speeds and becomes very significant. Control at higher speeds has more stability issues and can deal with less uncertainty and than at lower speeds.
3apo
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11 years ago
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on: Google Self-Driving Car Project's first vehicle prototype
From an economic standpoint, I would be interested to see how many OTC parts this system. That is, does it need a $1000 lidar or would it get a similar performance with a cheap $100 sensor?
From a technical point of view, 25mph is very limiting IMO. You probably do not need a very sophisticated controller to navigate at 25. If you reach speeds of 60-70MPH with varying road curvatures, the controller design gets trickier.
3apo
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12 years ago
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on: India's pro-business Modi storms to historic election win
Do you have numbers for the inflation as well?, which has more direct impact on the people than GDP. I know people were scandalized when onion prices increased 300-400% last year. For right/wrong reasons, congress got blamed for that.
3apo
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12 years ago
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on: India's pro-business Modi storms to historic election win
This. and the fact that Modi was actually praised that Gujrat did not have any riots after 2002/3 and the stable socio-economic climate. Other secular/pro-muslim governments were unable to prevent quite a few during that time
3apo
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12 years ago
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on: India's pro-business Modi storms to historic election win
Like it or not Pro-business is probably why Modi was elected. Every economic indicator in India went downhill since the BJP has been out of power for the last decade[1][2] - IMO the single biggest contributing factor to get Modi elected.
Indians have a short memory, the 2002 riots and other religious issues are not as relevant to the people as they used to be.
[1]http://blog.foreignpolicy.com/node/1448580
[2] http://www.openthemagazine.com/article/nation/time-for-trans...
Almost every economic indicator has turned adverse. In the 10-year period, growth nearly halved from 8.1 per cent to 4.9 per cent, inflation more than doubled from 3.8 per cent to 9.5 per cent, and food inflation rose nearly 10 times from 1.3 per cent to 12.8 per cent.
3apo
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12 years ago
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on: Facebook Buying WhatsApp for $16B in Cash and Stock Plus $3B in RSUs
3apo
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12 years ago
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on: Amazon to Raise Fees as Revenue Disappoints
I wonder how the drone program is coming along?
Or was it just a last minute PR blitz to increase revenues?
3apo
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12 years ago
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on: Students are the victims and culprits of India’s broken higher education system
I feel the comparison to American Educational system is rather unfair, the American Higher Education being much more evolved and the best there is. IMHO Indian Education system would compare favorably to many other countries with the same socio-economic factors. This is not to say the system does not need to improve, but so does the Education system everywhere else (more of the sort of MOOCs/Khan Academy for instance; college fees have been increasing sharply in India).
In my personal opinion historically the Colleges in India were more occupied by handing out more degrees and not education. To go beyond the routine was always due to self initiatives of the select few and not the majority. If the colleges increased the standards higher than the usual then a majority of students would fail ( "out of syllabus" was a regular complaint if the exams were too hard). This is not a critique of the Educational system, rather I feel glad that my Indian college education was easy enough to let me pursue avenues which benefited me more than what was taught in classroom. A degree from a reputed Indian college is only to open doors, what you learn depends entirely on how motivated you are.
