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Search found 459 results on 19 pages for 'neil thompson'.

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• When to use Genetic Algorithms and when to use Neural Networks?

  - by Neil N

  Is there a rule of thumb or set of examples to determine when Genetic Algorithms versus when to use Neural Networks to solve a problem? I know there are cases in which you can have both methods mixed, but I am looking for a high level reasoning between the two methods. EDIT: XKCD has now touched on genetic algo's:

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• Q on Python serialization/deserialization

  - by neil

  What chances do I have to instantiate, keep and serialize/deserialize to/from binary data Python classes reflecting this pattern (adopted from RFC 2246 [TLS]): enum { apple, orange } VariantTag; struct { uint16 number; opaque string<0..10>; /* variable length */ } V1; struct { uint32 number; opaque…

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• How can I get this code involving unique_ptr to compile?!

  - by Neil G

  #include <vector> #include <memory> using namespace std; class A { public: A(): i(new int) {} A(A const& a) = delete; A(A &&a): i(move(a.i)) {} unique_ptr<int> i; }; class AGroup { public: void AddA(A &&a) { a_.emplace_back(move(a)); } vector<A> a_; }; …

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• wcf metadata service page url

  - by Neil B

  I have a service with the metadata exposed. Trouble is when I browse to the wsdl the service page it has the machine name as below: MasterLibrary Service You have created a service. To test this service, you will need to create a client and use it to call the service. You can do this using the svcutil.exe tool from the command line with…

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• What is the security advantage of STS in web services?

  - by Neil McF

  Hello, I've started reading up on security (particularly authentication) with web services and I see a lot of references to security token services. From what I see, they take a username-password (or something) and, on validation, return a digital token. How is using this token any more secure then just relying on the username-password…

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• Securing S3 via your own application

  - by Neil Middleton

  Imagine the following use case: You have a basecamp style application hosting files with S3. Accounts all have their own files, but stored on S3. How, therefore, would a developer go about securing files so users of account 1, couldn't somehow get to files of account 2? We're talking Rails if that's a help.

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• Difference between generator expression and generator function

  - by Neil G

  Is there any difference — performance or otherwise — between generator expressions and generator functions? In [1]: def f(): ...: yield from range(4) ...: In [2]: def g(): ...: return (i for i in range(4)) ...: In [3]: f() Out[3]: <generator object f at 0x109902550> In [4]: list(f()) Out[4]: [0, 1, 2, 3] In…

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• Phantomjs creating black output from SVG using page.render

  - by Neil Young

  I have been running PhantomJS 1.9.6 happily on a turnkey Linux server for about 4 months now. Its purpose is to take an SVG file and create different sizes using the page.render function. This has been doing this but since a few days ago has started to generate a black mono output. Please see below: The code: var page =…

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• Should I throw my own ArgumentOutOfRangeException or let one bubble up from below?

  - by Neil N

  I have a class that wraps List< I have GetValue by index method: public RenderedImageInfo GetValue(int index) { list[index].LastRetrieved = DateTime.Now; return list[index]; } If the user requests an index that is out of range, this will throw an ArgumentOutOfRangeException . Should I just…

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• Most efficient way to solve system of equations involving the digamma function?

  - by Neil G

  What is the most efficient way to solve system of equations involving the digamma function? I have a vector v and I want to solve for a vector w such that for all i: digamma(sum(w)) - digamma(w_i) = v_i and w_i 0 I found the gsl function gsl_sf_psi, which is the digamma function. Is there an identity I can use to…

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• How to get a non-XML output using JDOM XSLTransformer?

  - by Neil McF

  Hello, I have an XML file which I'd like to parse into a non-XML (text) file based on a XLST file. The code in both seem correct, and it works when testing manually, but I'm having a problem doing this programatically. I'm using JDOM's XSLTransformer class to apply the XSLT to the XML and it returns it in the…

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• LLBL Gen Predicate Filter

  - by Neil

  I am new to LLBLGen Pro and am checking for duplicate, I have the following SQL: SQL: select a.TopicId,atc.TopicCategoryId,a.Headline from article a inner join ArticleTopicCategory atc on atc.ArticleId = a.Id where a.TopicId = 'C0064FAE-093B-466E-8745-230534867D2F' and a.Headline = 'Test' and atc.TopicCategoryId…

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• C++0x - export gone, exception specs deprecated. Will this affect your code?

  - by Neil Butterworth

  This latest Herb Sutter trip report on the C++0x standardisation process indicates that the committee has decided to completely drop the "export" concept for templates, and to deprecate exception specifications. I think these are both good moves, but I'm interested if anyone out there has a code base where these…

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• Is returning by rvalue reference more efficient?

  - by Neil G

  for example: Beta_ab&& Beta::toAB() const { return move(Beta_ab(1, 1)); }

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• Link click does nothing after ajax switching?

  - by Neil

  An odd case I'm trying to figure out here. I'm trying to design a mailbox system, and making some of the options ajax-y. Here's the scenario: We have a page with 2 tabs, inbox and compose. Inbox is a essentially a list of links of the form mailbox.php?msg=xxx. Clicking on the inbox or compose tabs does an…

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• How can I make this method more Scalalicious

  - by Neil Chambers

  I have a function that calculates the left and right node values for some collection of treeNodes given a simple node.id, node.parentId association. It's very simple and works well enough...but, well, I am wondering if there is a more idiomatic approach. Specifically is there a way to track the left/right…

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• What is the most efficient way to solve system of equations containing the digamma function?

  - by Neil G

  What is the most efficient way to solve system of equations involving the digamma function? I have a vector v and I want to solve for a vector w such that for all i: digamma(sum(w)) - digamma(w_i) = v_i and w_i 0 I found the gsl function gsl_sf_psi, which is the digamma function (calculated using…

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• Rails ActiveRecord::MultiparameterAssignmentErrors

  - by Neil Middleton

  I have the following code in my model: attr_accessor :expiry_date validates_presence_of :expiry_date, :on => :create, :message => "can't be blank" and the following in my view: <%= date_select :account, :expiry_date, :discard_day => true, :start_year => Time.now.year,…

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• Developer Curriculum Vitae - "Experience"

  - by Neil Barnwell

  I've been involved in some interviews at work recently, and having seen a few CVs, I've been thinking of my own. I wonder how I might rate my proficiency at the various technologies I've worked with on some sort of simple scale: Beginner, Intermediate, Expert. I've been doing C# for a few…

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• Reasonable expectation to support new Operating Systems?

  - by Neil N

  My company has a desktop app originally developed for Windows XP. The original programmer has since been fired (fired with extreme prejudice I might add). I have fixed the app various times but overall try to avoid it, it is a mess and the only real way to fix it is to completely rewrite…

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• Accessing different connection strings at runtime in ASP.NET MVC 1

  - by Neil T.

  I'm trying to implement integration testing in my ASP.NET MVC 1.0 solution. The technologies in use are LINQ-to-SQL, NUnit and WatiN. I recently discovered a pattern that will allow me to create a testing version of the database on the fly without modifying the development version of the…

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• What sort of Circular Dependencies does Oracle allow?

  - by Neil

  Hi all, I am creating test cases and I need to cover circular dependencies. So far I have been able to create two tables such that Table A has a FK to B and B has a FK to A. What other circular dependencies exist / are allowed between objects? I tried to create cycles between Views…

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• s3 / php script looping (strace)

  - by Neil

  Anyone using the following php S3 client library? http://undesigned.org.za/2007/10/22/amazon-s3-php-class It's been working fine for me for a few days, just noticed that a script I have in place now just ends up hanging. Running this through strace, I see something like: …

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• Globbing with MinGW on Windows

  - by Neil Butterworth

  I have an application built with the MinGW C++ compiler that works something like grep - acommand looks something like this: myapp -e '.*' *.txt where the thing that comes after the -e switch is a regex, and the thing after that is file name pattern. It seems that MinGW…

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• Sending html data via $post fails

  - by Neil

  I am using the code below which is fine but when I use the code below that in an attempt to send an html fragment to a processing page to save it as a file but I get nothing. I have tried using ajax with processData set to false ads dataTypes of html, text and xml but…

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