Jacobi's comments

Jacobi | 13 years ago | on: Why 256 bit keys are large enough

Using brute force is not very effective on 256 keys. But this doesn't exclude the possibility of a breakthrough that reduce enormously the search space. For example even for AES there is an attack faster than brute force by a factor of about four ! http://research.microsoft.com/en-us/projects/cryptanalysis/a...

Jacobi | 13 years ago | on: The Mathematical Hacker

I think that it can be implemented in constant time for floating point numbers. For integers I know that the exponentiation by squaring takes O(log(n))

Jacobi | 13 years ago | on: The Mathematical Hacker

There are plenty. The analysis of basic algorithms involve math (e.g. QuickSort, binary search, etc). Programming a user friendly website can involve advanced mathematics, for example you want to recommend to your users a product that might interest them (Collaborative Filtering)

Jacobi | 13 years ago | on: Any page loaded in IE can track your mouse movements anywhere

The PDF document format is incredibly complex. It can incorporate JavaScript actions !

Jacobi | 13 years ago | on: Apple increased R&D spending by $1 billion in 2012

I think that MS R&D is valuable for the research community because they do publish in peer reviewed journals.

Jacobi | 13 years ago | on: A 4G LTE base station running entirely in software on a standard PC

He works at Netgem a french start-up. It's not really a big corporate.

Jacobi | 13 years ago | on: I'm Not Japanese

For me sometimes it switches to Arabic even if I set the settings. And here in north Africa most people are francophone and prefer French or English !

Jacobi | 13 years ago | on: Parser combinator library in C

I appreciate the OP's efforts, certainly sharing code is a good thing. And one of the benefits of the sharing is to get a lot of feedback. Criticizing implementation details is important to spot, discuss and hopefully fix potential problems.

Jacobi | 13 years ago | on: Parser combinator library in C

I don't know why it uses a garbage collector when simple reference counting would suffice. Also I hate libraries with global states/variables like this one ...

Jacobi | 13 years ago | on: Mathematicians Encrypt Images Using Mathematics of Sudoku

One could exploit the continuity of the image regions. (The similarity of neighbors in intensity and colors). Also the output is an image with the same histogram ...

Jacobi | 13 years ago | on: City of Helsinki Wants To Keep Software Costs Secret

The migration from MS Office to LibreOffice is not straightforward, especially if you have millions of documents. In my experience, any complex document will almost always fail to render correctly ...

Jacobi | 13 years ago | on: Kogan.com mysteriously disappears from Microsoft Search Engines

This is a screen shot of my search results http://i.imgur.com/If1E2.jpg

Jacobi | 13 years ago | on: Kogan.com mysteriously disappears from Microsoft Search Engines

When I perform a search on bing the first result is the kogan website ...

EDIT: It was the kogan.co.uk and not kogan.com since my country/region = UK

Jacobi | 13 years ago | on: Dependency Inversion in C Using Function Pointers

The article describes an implementation of the observer pattern in C ... It's well known and used in many open source C projects. But I'm not sure that replacing simple tangled dependencies in the Linux kernel by using function pointers is a good idea. Because you may introduce an overhead in some performance critical code. And you may lose the locality of reference when abusing function pointers.

Jacobi | 13 years ago | on: Unemployed Programmer Kept Sneaking Into Apple to Finish the Job

A link for downloading the Graphing Calculator program http://www.pacifict.com/FreeStuff.html

Jacobi | 13 years ago | on: Microsoft.com New Design Preview

I do agree with you : mono is a subset of .NET, Cross platform compatibility is not the main reason for using Mono. I really like the C# and the .NET ecosystem. I use a native UI for each platform, but the core code is the same. I'm not a big fan of those generic UI toolkit ...

Jacobi | 13 years ago | on: Microsoft.com New Design Preview

I use Mono on a daily basis. It's a mature full featured cross platform .NET implementation.

Jacobi | 13 years ago | on: The Algorithm Didn’t Like My Essay

Yes, they could even learn by heart the lyrics of a song and adapt it to the context.

Jacobi | 13 years ago | on: Anders Hejlsberg: You Can't Maintain Large Programs in JavaScript.

You can do OOP in any langage and there is nothing wrong with dojo. But from my limited experience, maintaining large programs written in JavaScript is a tedious job (each program reinvent it's own OOP semantics)

Jacobi | 13 years ago | on: Anders Hejlsberg: You Can't Maintain Large Programs in JavaScript.

JavaScript lacks a real library/module system, namespaces and OOP facilities. I usually spend more time maintaining a JavaScript program than a program written in Java/C# with equivalent size. That being said, my skills in JavaScript are limited.