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2013-10-23 23:57:31 -0600 | asked a question | Social Network Analysis I would like to know if there is any features in Sage to analise social networks like:
I mean exactly anlysis of the real networks not graph theory. |

2013-07-24 21:57:42 -0600 | commented question | Maxima in online notebook The problem was solved. Now it returns the plot. |

2013-07-23 08:20:58 -0600 | asked a question | Maxima in online notebook Is there any way to show maxima graphs in the online Sage notebook? shows nothing. returns not hyperlink |

2013-07-18 20:38:12 -0600 | asked a question | Linear diophantine equations Is there any basic function in Sage to solve linear diophantine equations? |

2013-07-16 03:07:26 -0600 | asked a question | Save file from online notebook Is it possible to save plot to svg file from online Sage notebook? |

2013-07-05 20:48:46 -0600 | commented answer | Model of polynomial with integer coefficients Thanks a lot! That's it! |

2013-07-05 20:29:29 -0600 | received badge | ● Scholar (source) |

2013-07-05 20:29:29 -0600 | marked best answer | Model of polynomial with integer coefficients So, we want to find a polynomial P with integer coefficients and a fixed With such a formulation, we see that there is a possibility with integer programming.
But the Putting all together, we get: If you want to find the best polynomial with real entries, you just have to replace the two lines by In our example, you will get : For huge data, it should also be possible to approximate the best solution with lattice reduction algorithms. |

2013-07-05 03:36:32 -0600 | received badge | ● Editor (source) |

2013-07-05 03:34:25 -0600 | commented answer | Model of polynomial with integer coefficients Thanks, but I meant that I want to find polyinomial with integer coefficients which will approximate my date by the best way, that is the distance from points in "mydata" to graph of the polyinomial will be the least. It is possible to look at this another way, lets polynomial is the function of its coefficients. It is easy to write function which will find sum of distances from graph of the polynomial to each point, then I need to find ArgMin of this function. Is there function in Sage like "ArgMin[{f, cons}, {x, y, ...}, dom] gives a position at which f is minimized over the domain dom, typically Reals or Integers." in Mathematica? It is important that I can choose from Integers and Reals/ |

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2013-07-04 21:24:14 -0600 | asked a question | Model of polynomial with integer coefficients Can Sage find fit to the data in form of the polynomial with integer coefficients? I mean that I want to find polyinomial with integer coefficients which will approximate my date by the best way, that is the distance from points in "mydata" to graph of the polyinomial will be the least. Is there any way to approximate my data by same polynomial without models? Sorry for my English( |

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