Message Boards

WOLFRAM COMMUNITY

8111 Views

3 Replies

7 Total Likes

View groups...

Follow this post

Share this post:

GROUPS:

Find unique characters in text with probability, entropy

Radek Drozd

Posted 11 years ago

Can somebody make a aplication in mathematica with this conditions? Identification of unique characters used to write the text, and so needed the alphabet. In addition, specify the amount of occurrences of each of these characters in the string and the probability of occurrence that character. 1 indication of the alphabet all the characters occuring in the text. 2 no special characters, spaces, etc. 3 select only uppercase letters When calculating the probability should skip characters not included in the alphabet. Example: I'm adding a image with an example of a program written in C #:

POSTED BY: Radek Drozd

3 Replies

Sort By:

Radek Drozd

Posted 11 years ago

how to do it in Mathematica public Alfabet(string input) { alfabetDict = new Dictionary<char, int>(); napis = input.ToCharArray(); } public void AlfabetCreate_All() { alfabetDict.Add(napis[0], 1); for (int i = 1; i < napis.Length; i++) { if (alfabetDict.ContainsKey(napis[i])) alfabetDict[napis[i]]++; else alfabetDict.Add(napis[i], 1); } foreach (var item in alfabetDict) { this.sumAlfabet += item.Value; } }

how to do it in Mathematica

       public Alfabet(string input)
    {
        alfabetDict = new Dictionary<char, int>();
        napis = input.ToCharArray();
    }
        public void AlfabetCreate_All()
    {
            alfabetDict.Add(napis[0], 1);
            for (int i = 1; i < napis.Length; i++)
            {
                if (alfabetDict.ContainsKey(napis[i])) alfabetDict[napis[i]]++;
                else alfabetDict.Add(napis[i], 1);
            }
            foreach (var item in alfabetDict)
            {
                this.sumAlfabet += item.Value;
            }
    }

POSTED BY: Radek Drozd

Radek Drozd

Posted 11 years ago

ok than i start with this Panel[InputField["", String, FieldHint -> "Enter text", FieldHintStyle -> {Red}] Grid[{ {Text@Style["Entropia Shannona"], Control[{{showGrid, True, ""}, {True, False}, ControlType -> Checkbox}]}, {Text@Style["Entropia Hartleya"], Control[{{showGrid, False, ""}, {True, False}, ControlType -> Checkbox}]}}] PopupMenu[ Wszystkie Znaki, {Wszystkie Znaki, Bez znaków Specjalnych, Tylko Wielkie Litery}] Button["Licz"] ] can somebody make this UI like in app form images, and how to make checkbox to have indicated separately?

POSTED BY: Radek Drozd

Udo Krause

Udo Krause, NOrganization

Posted 11 years ago

Can somebody make a aplication in mathematica with this conditions? sure, but this is not a freelance portal to give people work to do for love. So, please, propose something you've done already about this, then somebody might look into your work and may - if possible - give useful advice.

POSTED BY: Udo Krause

Reply to this discussion

Reply Preview

Attachments

Remove Add a file to this post

Follow this discussion

or Discard

Group Abstract

Feedback