Questions tagged [data-sets]
Questions asking for real-life or benchmarking data sets.
49
questions
1
vote
1answer
62 views
Indexing a huge dataset (that does not fit into central memory)
The problem.
Let us consider a huge file with billions of lines, each containing a string. There are $n$ different strings and $m$ lines in the file, with $m$ much greater than $n$, although both are ...
2
votes
1answer
36 views
Examples of difficult Hamiltonian Cycle Problems
I am working on implementing algorithms to solve Hamiltonian Cycle Problem. I need difficult problem graphs to test my implementations but my google-fu is weak and am unable to find any.
Please advise ...
1
vote
1answer
35 views
What factors of the integer dataset being sorted can I change, in order to compare two sorting algorithms?
I am comparing two comparison and binary data structure based sorting algorithms, the Tree Sort, and the Heap Sort. I am measuring the time taken for both algorithms to sort an increasing size of an ...
0
votes
1answer
38 views
Face recognition system with a sparse dataset
I have a dataset of 100 ID's, each ID with only a single unique face image. How can I develop an effective face recognition system to recognise only these faces?
I was thinking Deep Learning but the ...
0
votes
0answers
25 views
Database that contains timespans of cyber attacks in the web
for a project I need to evaluate a model, that tries to predict wether a certain cyber-attack (i.e. connection to a low level honeypot) is just a random access, a new attack-wave or an already known ...
0
votes
1answer
67 views
What is a range of an attribute in data mining?
In my data mining course, we are working with a data set. I have to identity the ranges of each attribute. I am given the set of data for all 150 points and i am given the visualization (charts) of ...
1
vote
0answers
13 views
Raters and subsampling
In order to select questions for an online contest, we get contributors to submit potential questions that they write themselves. Then, out of, say 100 submitted questions, we have to rate them and ...
0
votes
1answer
38 views
0
votes
1answer
42 views
point clouds in machine learning
What is the purpose of point clouds in machine learning?
Consider the following suggestion:
Say I have a table (per year) of records (such as days) each of which is made of n real numbers such as ...
1
vote
1answer
266 views
What is the most efficient algorithm for creating a list of unique values from a list of pairs of value?
Background
I have a list of 50 million $A-A_i$ pairs, where $i>1$, and $A$ and $A_i$ are some text. I need to extract the $A$ values from the list, so I get a new list of unique $A$ values.:
$$
\...
1
vote
1answer
31 views
Abstract Data Types and their Implementation [closed]
I wanted to know if there is good resource to learn about the ADTs like set ADT, list, array, boolean etc and their implementation.
-1
votes
1answer
127 views
Describe briefly how analogue data differs from digital data.
I was wondering if you could help me to understand the difference between analogue and digital data. I looked it up online but couldn't find a proper answer. If for any reason this is the wrong site ...
0
votes
0answers
72 views
Derivative and integral of experimental data
I have same experimental data with same noise:
I have to calculate the derivative and the integral of the function that fit the experimental data. I try with all the function in this page but the ...
0
votes
1answer
293 views
Entropy and Information Gain for multi attributes
Is there any way that for specific dataset I can measure entropy and information gain for two or more attributes together? Let's say we have the following dataset:
$\begin{array}{cccccc|c}
x1 & ...
0
votes
2answers
268 views
create large data sets for machine learning
I am trying to research a new topic using machine learning. The problem is, I have a very small dataset, consisting of 5 months of data. I have been told that my dataset is too small. I want to know ...
0
votes
1answer
2k views
How to feed videos to a neural network
I have been coding and testing Neural Networks for a while but as of now I have only used IMAGE datasets. (i.e. I have M training images and N testing images).
Some datasets are video datasets. The ...
1
vote
0answers
580 views
Algorithms for tabulating/counting/frequency counting?
It is common in data science to receive two equal length vectors (array of dimension 1), say Categories and Weights.
We aim to find all unique values of Categories and sum up the corresponding ...
1
vote
0answers
46 views
Algorithm that shifts points in the x-y plane to maximize distance but keep one axis constant
Suppose I am running an experiment with some subjects, and I obtain some numerical data from them. The subjects are divided into 2 experimental groups. Rather than display the means of each group in a ...
1
vote
0answers
34 views
which paper to take that would best fit to becoming a data scientist? [closed]
My name is Webber from Auckland, New Zealand. I am currently in my second year studying the bachelor of computer and information science. I have chosen to do a double major in computational ...
0
votes
1answer
92 views
Classes of outer totalistic cellular automata
I'm wondering if anyone knows of any place where the Wolfram classifications of many outer totalistic cellular automata have been catalogued. The classes of a few examples are given in A New Kind of ...
1
vote
1answer
189 views
Method for finding correlation between data sets
Let's say that I have $N$ data sets where I have data points at some fixed frequency, such as "daily".
What would be a good method for finding correlation between any of the data sets, or choosing a ...
2
votes
1answer
503 views
Where I can I find Pre Trained CNN Datasets for Facial Emotion Recognition?
I am working on a project that involves recognising emotion from images. There are two parts in the project: One where I will generate features from images using API's and then classify the emotion ...
0
votes
1answer
78 views
What is the metadata in microblogging platform?
I'm reading papers regarding microblog credibility perception of non-text cues.
Tweeting is believing? Understanding microblog credibility perceptions
by Morris et al., 2012
Microblog Credibility ...
0
votes
1answer
1k views
About the MNIST data-set
Is this known as a fact or from some analysis that the MNIST data-set is almost as if its sampled from some low (~10?) dimensional manifold? Is there a locally linear embedding to a low-dimensional ...
1
vote
0answers
114 views
Can file entropy be predictable?
I am working on some lossless compression topic and looking on any resources or prior studies on lossless file entropy predictability.
Assuming we know type of the file (we can tell its belongs to ...
0
votes
0answers
90 views
Parallel Machine Scheduling test data
I am writing optimization program for unrelated parallel machine scheduling problem on CUDA. Now, the only thing I am missing are some test cases.
Does anyone know where I can find such data? I have ...
3
votes
0answers
98 views
Describe data structure using equations
Good afternoon.
At work I'm currently developing a system which takes user input (well structured) and then stores it in memory to do some processing.
The input is basically a dataset formed by ...
6
votes
2answers
336 views
Interesting small SAT problems?
I'm noodling around with making a hardware SAT solver on an FPGA, and I'm wondering if there are any interesting SAT problems smaller than, say, 50 variables both to stay within the limits of the FPGA ...
0
votes
1answer
47 views
How to parse data in a text file? [closed]
I had a question about altering a text file. I have data in the following format.
1 a,b,c
2 d,e
3 a, l, m,n
Note that some of them have spaces after the coma
...
0
votes
1answer
22 views
benchmark data set for Metareasoning problem
I am developing algorithm for solving following problem:
Given a set of items with unknown feature(s) (but know distribution of feature(s)). Algorithm must choose what items to measure(every measure ...
2
votes
1answer
45 views
Semantic information collections on the web. (Semantic Wikipedia)
There are lots of technologies supporting semantic information markup even as wiki software.
I am wondering if there is any kind of broad information collection project like Wikipedia which features ...
1
vote
2answers
196 views
Relative Importance in Graph Theory [closed]
I am working on an algorithm that ranks a set of nodes in a graph with respect to how relative this node is to other predefined nodes (I call them query nodes). The way how the algorithm works is ...
0
votes
1answer
706 views
Automatically generate meaningful queries for a data table
My field of research is not Database or AI. But I have some problems to solve, and would like to know which branch this kind of problems belong to, and what are the results.
The main question is: ...
3
votes
2answers
2k views
How to filter a very, very large file
I have a very large unsorted file, 1000GB, of ID pairs
ID:ABC123 ID:ABC124
ID:ABC123 ID:ABC124
ID:ABC123 ID:ABA122
ID:ABC124 ID:ABC123
ID:ABC124 ID:ABC126
I would like to filter the file for
1) ...
1
vote
1answer
280 views
What are good counter-examples when training an apple classifier? [closed]
I am doing a project in order to recognize an apple. (I am using Emgucv with Visual Studio 2010 C#, if that's relevant). My project is a classification (is or is not an apple). I have 2000 images of ...
1
vote
5answers
5k views
What is the best way to index lookups on a 2D array of integers that is boundless in x and y?
Lets say you have a data model that consists of a 2D grid of integer points. This grid is sparsely populated and boundless in x and y (up to the max of a 32-bit integer).
What is the best way to ...
3
votes
1answer
107 views
Environment requirement in training image dataset for classifier
I have a question about preparing the dataset of positive samples for a cascaded classifier that will be used for object detection.
As positive samples, I have been given 3 sets of images:
a set of ...
0
votes
1answer
41 views
Access to publicly available project with all the artefacts (files) created during the development [closed]
Does anyone know where I could get an access to a project that contains all the artefacts (documents) that were created during the development? So I would like to get all the word, pdf, power designer,...
2
votes
0answers
918 views
Looking for dynamic network data sets [closed]
There are a number of collections of network (or graph) data sets freely available on the web, e.g.
http://snap.stanford.edu/data/index.html
http://www.cc.gatech.edu/dimacs10/downloads.shtml
I am ...
5
votes
1answer
85 views
Are there repositories of automatically generated (spam) webpages?
I'm interested to see if I can use machine learning/network analysis methods to automatically detect automatically generated (spam) webpages. I'm particularly interested in webpages that look ...
4
votes
1answer
2k views
How is sound input and output data converted to use with machine learning networks?
Suppose one has a couple of .wav files with English spoken words, multiple ones for each word, and for each such set there exists a transcription of their right output, the pronunciation as ascii text....
1
vote
1answer
589 views
Maximum variance and useful information of dataset
I am reading through PCA and it says that the maximum variance principal component has most of the information. Can we apply that to any data set? If a data set has n attributes and most of the ...
2
votes
0answers
58 views
Algorithm for query comparison
Lets say I have a global dataset and I run queries over those data set.
For example my dataset would be
#id, #Name, #Employee, #Birthdate, #number_of_children
1, Nick, Nasa, 1982, 1
2, Jack, Exon, ...
1
vote
0answers
44 views
Algorithm for query comparison
Lets say I have a global dataset and I run queries over those data set.
For example my dataset would be
#id, #Name, #Employee, #Birthdate, #number_of_children
1, Nick, Nasa, 1982, 1
2, Jack, Exon, ...
1
vote
1answer
55 views
Pool of photos for term extraction
I need a pool of photos (if possible with description) for my project. I mainly have to perform term extraction for semantic searching. Is there something available out there that is made available ...
3
votes
1answer
133 views
Seeking “gold standard” to evaluate accuracy of network clustering algorithm
I'm currently looking at network clustering algorithms (we're currently looking at both directed and undirected, unweighted networks). The algorithms we've tried produce visually nice clusters. ...
2
votes
1answer
113 views
Where can I find the data of the computer experiments in the book “Neural Networks and Learning Machines”?
The book "Neural Networks and Learning Machines" by Simon Haykin has many computer experiments to which many exercises are related. But there seems to be no data for these experiments available online....
29
votes
2answers
5k views
Where to get graphs to test my search algorithms against?
I am implementing a set of path finding algorithms such as Dijkstra's, Depth First, etc.
At first I used a couple of self made graphs, but now I'd like to take the challenge a bit further and thus I'...
21
votes
4answers
4k views
CPU frequency per year
I know that since ~2004, Moore's law stopped working for CPU clock speed.
I'm looking for a graph showing this, but am unable to find it: most charts out there show the transistor count or the ...
