Questions tagged [normalize]

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Normalizing TF-IDF results

I would like to normalize the tfidf results that I've got from this given code: for (int docNum = 0; docNum < ir.numDocs(); docNum++) { TermFreqVector tfv = ir.getTermFreqVector(docNum, 'contents'); if (tfv == null) { // ignore empty fields continue; } String[] tterms = tfv.getTerms(); int termCount...
John
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R ggplot2 histogram overlays with normalized values for each histogram

I would like to create a histogram plot comparing three groups. However, I'd like to normalize each histogram by the total number of counts within each group, not by the total number of counts. Here is the code that I have. library(ggplot2) library(reshape2) # Creates dataset set.seed(9) df
Nathan
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1

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Normalize an array of objects in the flattest way for the Redux?

But I believe I’m doing it wrong because it doesn’t help much. The store is still too complex and therefore I need to use some recursive stuff in reducer to update the state. Moreover, a deeply nested state makes working with react-redux connect() very hard too, because it does only a shallow co...
1

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How to normalize JSON Data correctly Using Pandas - Python

I am New to Python and currently facing a problem while normalizing the Json during in python. In the Example given below , I had found the solution for the nested tag having single values like {u'c': u'119.743', u'h': u'119.891', u'l': u'119.249', u'o': u'119.341'}, Now we have multiple values in t...
Ishan
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91

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postcss-normalize is overriding my own styles

I'm trying to use postcss-normalize with PostCSS. Anywhere I place the plugin in the list causes it to override my styles. I have forceImport set to true so I don't need to import it anywhere. Here's my .postcssrc: { 'modules': false, 'plugins': { 'postcss-normalize': { forceImport: true, }, 'postcs...
BugHunterUK
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swift: Which filter should I choose, if I want to normalize image?

Like the topic, I'm using swift to predict model, and someone suggest me to use CoreImage to subtract mean value of input image, but it's seems I can't do this with only one filter. So which filter should I choose, if I want to normalize a image? So far, I've tried to do this without CoreImage let...
李定家
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Normalize points in Python so that RMS distance from origin will be sqrt2

I want to implement the DLT algorithm and I have 6 object points (X,Y,Z,1).T and 6 image points (u,v,1).T , that are the projection of the object points to an image plane. So before implementing the DLT I have to normalize data. More specific I found that I have to do the following: 2D image points...
Vanias
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How to ensure all “like” characters can be normalized in Java

I'm learning a bit about UTF-8 characters and how they're constructed. I'm working on a method that will take an input string and convert any 'special' characters to their basic equivalent. For example, I expected the 'c' values below to output 'c': 'ç' => 'c' 'ć' => 'c' 'č' => 'c' 'ⓒ' => 'c'...
TylersSN
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67

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Do the Japanese ideographic and fullwidth full stop both map to ASCII full stop?

I noticed that NFKC unicode normalization, at least in JavaScript, does not normalize the Japanese ideographic full stop (。) to ASCII full stop but it does normalize the Japanese fullwidth full stop (.) to the ASCII full stop. '。'.normalize('NFKC') > '。' '.'.normalize('NFKC') > '.' Does on...
Adam Thompson
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Normalizing an image in R using mean and standard deviation

Noob machine learner here! I am attempting to normalize images in R, as I plan to submit them to be classified in the Machine learning for wildlife image classification (MLWIC) package in R. The authors of the package mention that before images are classified, they should be resized to 256 x 256 pix...
Nova
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2

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What's wrong with this string normilizer Python snippet?

It seems that every time I think I mastered encoding, I find something new to puzzle me :-) I'm trying to get rid of French accents from an UTF-8 string: >>> import unicodedata >>> s = u'éèêàùçÇ' >>> print(unicodedata.normalize('NFKD', s).encode('ascii','ignore')) I expected eeeaucC as an out...
e-satis
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2

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790

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normalized compression distance C code

does anybody knows if there is already a code in C that calculates the NCD (normalized compression distance) for two files or I need to write the code by myself? Thanks in advance!
nomercy
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650

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SQLite: Performance of Rows VS Columns

I have a database table where each row (movie) has a couple of numeric tags (movie categories). Currently I put all these tags in the same column as a string, and search for them using %LIKE%, which requires a slow full table scan when I need to find all movies in a certain category. I want to speed...
Muis
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835

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Normalize repeating values in Hibernate - Java

I have a String property of an entity, which is often repeated by other entities - which would (in traditional databases) be mapped to its own table. For example: I could having a clothing entity, with each item of clothing having its own object or row. Each item will have a brand, but this brand (S...
user1260191
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How do I normalize a string using ICU4C?

I find the ICU docs somewhat challenging. My question is: How do I normalize a string using ICU4C? I'm looking at unorm2_normalize, but what if the buffer isn't large enough? How would I know this before? Naturally, I want to normalize the entire string. Thanks! :> P.S. Here is the API doc on that f...
Usl Addet
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javascript - normalize a number so that it falls between a range between 0 and 1 [closed]

I have an experiment where my program picks up audio from my speakers (in decibels...sort of). The range is usually between about 0 and 20. I want to take that value and map it to a range between 0 and 1 so that I can scale an item in proportion to the volume coming through the speakers. So if the a...
mheavers
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596

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How to use XSLT and a key to Normalize XML produced by SQL Server

When I query data AS XML from SQL Server it will often generate duplicate XML nodes. Often I can tweak the query to eliminate this, but not always. For those times I can't, I end up with XML such as this: Notice that there are two nodes next to each other that are identical in their attributes....
Joe Tansy
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How to change scientific outcome in “normal” number?

When I was making my first exercises in PASCAL I came across a very large (scientific) outcome. I asked my coach from course how to fix this. He didn't know the answer. I searched on Google how to convert this, but no luck finding the right answer. So I thought lets ask here. The outcome is '2.15000...
Stievie G
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R Normalize eigenvectors in spectral clustering then plot

I am following this http://www.pnas.org/content/suppl/2008/12/22/0802806106.DCSupplemental/0802806106SI.pdf to achieve spectral clustering on my correlation matrix. I have calculated eigenvalues/vectors and have chosen the k-most (k=5) significant pairs. The resulting matrix looks like this: V1...
Travis Liew
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252

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Normalize.css and single-direction margins (margin-bottom)

Could anybody share a modified Normalize.css file with margins declared as single-directional (i.e. margin-bottom only)? Or is there an actual default style sheet such as this one, based on which I could modify the file myself? I would greatly appreciate your help.
Pakas
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Tableau: Normalize or denormalized tables perform better on read queries?

Would multiple normalized, tall & thin tables that are joined be less performant than 1 denormalized, short & wide table when Tableau is pulling data from it to make visualizations? I'm worried 100% about reads (select statements). I'm not concerned at all with writes (update, inserts, deletes). I'm...
pbars23
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3

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div won't center with normalize.css

For some reason when I add normalize.css to my code my div won't center within it's container. and #wrap { height:100%; width:100%; text-align:center; } #myDiv { height:30%; width:60%; background:#999999; } jsfiddle: http://jsfiddle.net/msteeledunn/3xw1t6yo/
steele
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2

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How do I normalize Non-CSV data in Encog

So I'm using Jeff Heaton's Neural Network library. When trying to solve the Iris plant classification problem I have an issue with data normalization. I am able to Normalize a CSV file using the following method: public void NormalizeFile(FileInfo SourceDataFile, FileInfo NormalizedDataFile, FileI...
Prime By Design
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871

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Is it necessary to normalize data when using Matlab's ANN?

Is it necessary to use mapstd or mapminmax to normalize the data when training a neural network in Matlab? Both functions documentation state that this is done automatically when declaring feedforwardnet, however, I have read that people still normalize it. So why would I normalize it if it's done a...
Luis Cruz
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Return IDs list of nested normalized data in result

For example I have a simple JSON, like this: { 'id': '123', 'author': { 'id': '1', 'name': 'Paul' }, 'title': 'My awesome blog post', 'comments': [ { 'id': '324', 'commenter': { 'id': '2', 'name': 'Nicole' } }, { 'id': '325', 'commenter': { 'id': '3', 'name': 'Alex' } } ] } And after normalizing wi...
AleshaOleg
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1

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Normalization using R

Hy guys, I have a table with 1.350.000 rows and 113 columns (samples). What I want is to normalize all my data the by the smallest sample. For example: Org samp1 samp2 samp3 samp4 samp5 samp6 A 0.08 4.92 3.34 5.50 2.98 2.99 B 1.97 3.96 4.49 2.79 4.73 4.00...
F.Lira
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spark-ml normalizer loses metadata

I'm using a dataset with categorical features in PySpark which are indexed and one-hot encoded. After fitting the pipeline I extract the encoded features by using the metadata of the features column. When I include a normalizer in my pipeline I lose the metadata of my categorical features. See examp...
Cheryl
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2

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553

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How to normalize this recursive nested JSON

Having a bit of an issue trying to normalise the my payload that contains a nested schema of the same type as the parent using Normalizr For example { id: 123, sections:{ section: [{ id: 1, name: 'test', sections: { section: { id: 125, name: 'test125' } } }, { id: 2, name: 'test2' sections: { secti...
1

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3

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How to Normalize data with NaN values in python

The data I am using has some null values and I want to impute the Null values using knn Imputation. In order to effectively impute I want to Normalize the data. normalizer = Normalizer() #from sklearn.preprocessing normalizer.fit_transform(data[num_cols]) #columns with numeric value Error: Input co...
Jayashree Gowda
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658

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Normalize gradient magnitude to unit length in tensorflow

How can we normalize the gradient magnitude to a unit length in tensorflow? I am trying to do something like gradients = tf.gradients(self.loss, _params) gradients_norm = tf.norm(gradients , name='norm') final_gradients= [(gradients/gradients_norm , var) for grad, var in gradients] Any clue? Thank y...
Inforneer
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3

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167

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awk cartesian product

I have large tab-separated two-column text file, like this: ... '001R_FRG3G' '81941549; 47060116; 49237298' '002L_FRG3G' '49237299; 47060117; 81941548' '002R_IIV3' '106073503; 123808694; 109287880' ... As you see second column doesn't contain atomic values. That's why i want to 'normalise' thi...
mnowotka
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How Calculate NORMAL in triangle strip

i have a problem with the lighting of my OPENGL projects. I program on c++ using ECLIPSE. I have a terrein construited by triangle strip. the code of my render is the follow: HeightMap::~HeightMap(void) { } float HeightMap::getScaledGrayColor(double height) { float fColor = NULL; if (height == this-...
Agata
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Normalize.css V1 vs. V2 when support required for both older and newer browsers [closed]

I know there are two version of Normalize.css and V2 is for IE8+, Firefox 4+, Safari 5+, Opera, Chrome. If i use version 1.1.2 over 2.1.2 in project because it should be compatible with all browsers IE7 and under along with cross-browser compatibility among older browsers, then what are the disadvan...
Jitendra Vyas
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471

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CSS Reset+Normalize?

I’ve been wondering, would there be any huge issues with using both normalize.css and some sort of CSS reset? I’ve been digging around and all the articles I’ve come across only talk abut them in an either-or fashion, but nothing about combining the two. I admittedly have little experience wit...
StephenESC
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3

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dividing elements in list to normalize data in Python

I am trying to write a script in Python which normalizes a dataset by dividing all value elements by the max value element. This is the script that I have come up with so far: #!/usr/bin/python with open('infile') as f: cols = [float(row.split('\t')[2]) for row in f.readlines()] maxVal = max(cols) #...
owwoow14
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2

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199

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How can I map unicode symbols to a simpler latin script equivalent in Java

I want to map graphical/symbol characters to a simpler Java alternative where possible, for example: U1E36 latin capital letter l with dot below -> L U25B6 Black Right-Pointing Triangle -> > U25C0 Black Left-Pointing Triangle -> < U25B2 Black UP-Pointing Triangle -> ^ My problem is I don't know wh...
Paul Taylor
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101

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limit text files to a certain word length, but keep complete sentences

I have a corpus of text files that I need to copy, but limiting each file to roughly the same word length, while maintaining complete sentences. Treating any punctuation within {.?!} as a sentence boundary is acceptable. I could do this with python, but I am trying to learn bash, so suggestions are...
reynoldsnlp
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1

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1.3k

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Normalize ranking score with weights

I am working on a document search problem where given a set of documents and a search query I want to find the document closest to the query. The model that I am using is based on TfidfVectorizer in scikit. I created 4 different tf_idf vectors for all the documents by using 4 different types of toke...
suparngp
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1

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0

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Pandas: Grouped DataFrame - divide values of a column by the value of a certain row within that column for each group

I have a dataframe with groups. To normalize the values for each group I'd like to divide all values of each group by the value of a certain element within that group. df = pd.DataFrame([['a','2018-02-03',42], ['a','2018-02-04',22], ['a','2018-02-05',10], ['a','2018-02-06',32], ['b','2018-02-03',10...
FreezeFrame
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1

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964

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Normalisation of data in rows in R

I'd like to normalize values in rows of a data frame. In other words, divide every row in a given column by a ratio calculated from the sum of all the rows in a given column to the lowest sum of the rows. Here is my example: df
user2904120

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