Questions tagged [csv]

Comma-Separated Values are a list of plain text values delimited by commas, or a file containing one or more lists in that format.

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Neural network not learning at all

I am training a MLP on a tabular dataset, the pendigits dataset. Problem is that training loss and accuracy are more or less stable, while validation and test loss and accuracy are completely constant....
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How to Manipulate a Dataset

I have a raw dataset of Images I got from Kaggle, It has been classified already, but I want to randomly split the information in a 80:20 ratio between train and test, problem is since all information ...
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0 answers
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How to load time series data set, from .csv into keras 3D tensor

I would like to load, from CSV, where data are listed row by row, to load into Keras 3D tensor for LTMS. I've got error, that it requires 3D data, but I've only got 2D from CSV. Thank you in advance.
1 vote
0 answers
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Python train convolutional on numerical values shape issue

I want to train a convolutional neural network autoencoder on a csv file which contains values pixel neighborhood position of an original image of 1024x1024. When I try to train it, I have the ...
0 votes
1 answer
53 views

pands doesn't recognize missing values in CSV [closed]

In the CSV there's missing values in many columns but the code shows there's no missing values. how can i fix this?
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6 votes
4 answers
116 views

How can I observe my CSV files better? [closed]

I'm running a lot of experiments that give their output as CSV files. An experiment might be running for hours, with a new line being added to the CSV every 10 seconds. Right now I'm opening these CSV ...
2 votes
4 answers
141 views

Algorithm to determine whether the first row in CSV is likely to be a header row or a data row

I have a fairly simple problem. I am trying to determine whether the first row in CSV is likely to be a header row or a data row. Looking at single column, the problem can be simplified to: I have a ...
0 votes
0 answers
16 views

IBM SPSS : Different format of CSV file when opened with Notepad and SPSS

I got the data from: https://www.kaggle.com/datasets/rsrishav/youtube-trending-video-dataset I want to use it for college purposes using IBM SPSS Statistics, but when I want to import it to SPSS, the ...
0 votes
1 answer
39 views

read_csv, non-printing ascii delimiters, and multi index

I have some text data which uses the ASCII data characters 0x1e "group separator" and 0x1d "record separator"...
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0 votes
2 answers
202 views

How to Insert a Row before Dataframe in Pandas

I have a csv file that is used as a pandas dataframe, now I only need to insert a dummy row before the dataframe starts like in the screenshot denoted as "Label". How can I do that?
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0 answers
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How to generate csv file for custom metrics in apache storm?

I have generated custom logs for getting CPU utilization per topology in Apache Storm with this document Profiling Resource Usage. But, CSV file for that log is not generated, like other metrics. I ...
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0 votes
1 answer
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Pandas altering numerical data on import

I have a csv file where a column of data is a 19 digit number of which the last three digits are always 163, this is specific to identify that this is the correct id. If i open the file in sublime, ...
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0 votes
1 answer
818 views

How to fix ValueError: The truth value of a DataFrame is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all()

I am using pytest to test a function that reads a csv into a dictionary of lists. In the test function it writes a sample dictionary to a csv then calls the function to read it back out. To accomplish ...
2 votes
1 answer
271 views

The single CSV created by combining a large number of CSV files is too large to process. What options do I have?

The dataset I am currently working on has more than 100 csv files, with each of size more than 250MB. These are files containing time series data captured from different locations and all the files ...
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0 answers
46 views

Has anyone joined FHIR resources?

I have FHIR-formatted data (Fast Healthcare Interoperability Resources), that I've converted to CSV using the npm package ndjson-to-csv, and on first glance, this seems useable for ML experimentation, ...
0 votes
1 answer
414 views

multiple images inside one large CSV file

I'm very new to data science, and was admiring how people had made these massive open-source datasets, on places like kaggle. I noticed that all of the datasets where all in CSV format. I have lots of ...
0 votes
1 answer
197 views

Online Generating Dendrograms with imported CSV file

Is there any website out there that performs hierarchical clustering on an imported file like CSV to generate dendrograms or similarity matrix? Free or paid does not matter. So far I found heatmapper....
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0 votes
1 answer
963 views

Error: `raise ValueError( ValueError: Missing column provided to 'parse_dates': 'Date' [closed]

I am using a .csv with two columns. The first has dates and the second has temperatures. I would like to plot it with dates on the x-axis and temperatures on the y-...
1 vote
1 answer
23 views

Defining a function in Pandas [closed]

Hello Data Scientists, Disclaimer: I am a Beginner learning Python and at the same time just trying out a lot of things. I am doing some data extraction on a file with with weekly deaths in ...
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0 answers
32 views

Save CSVs as hyper file

I have three separate CSV files (Points.csv, PointsSynonym.csv, and LocalDataPoints.csv). I made these files after extracting data from shape files and .gpkg files. I would like to save them all a ...
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1 vote
3 answers
562 views

Efficiently modify a large csv file in Pandas

I have a csv file and would like to do the following modification on it: ...
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-1 votes
3 answers
7k views

Convert .data file to .csv [closed]

I'm using a data called 'adults.data', I need to work with that data as a '.csv' file. Can anyone guide me on how can I change the format? I tried opening the file in excel and then save it as csv, ...
2 votes
1 answer
48 views

How to work with hundreds of CSVs with millions of rows in each?

So I'm doing a project on the COVID-19 Tweets dataset from the IEEE port and I plan to analyse the tweets over the time period from March 2020 till date. The thing is there's more than 300 CSVs for ...
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2 votes
0 answers
31 views

Is there a corpus of toy datasets specifically designed for finding bugs in data science software?

I'm looking for a corpus of toy tabular datasets that can be used to test data profiling, machine learning, data manipulation, etc. software. Some example attributes: Strange column names (empty ...
2 votes
0 answers
23 views

Is high school GPA included in IPEDs NCES databases?

I’m currently developing a computer tool which will sort through the US college and university NCES data provided in the IPEDs website to match users with potential universities. NCES shows university ...
0 votes
1 answer
618 views

How to specify different columns stacked vertically within CSV using pandas?

I have a CSV file that looks like below with columns labeled below data, and I'm have trouble trying to retrieve said data with pandas. I'm only able to address the columns at the top with the ...
1 vote
1 answer
898 views

How do I get Multiple CSV files (csv file names will be column names) from a folder to a pandas dataframe?

I think the title is enough for what is my problem here. I have 100 tickers in a folder. I got all csv files to one list. but I wanna see the tickers name which these are csv file names. what should ...
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2 votes
2 answers
3k views

Pandas loads a csv file incorrectly, but without throwing an error [closed]

So I tried loading some data through pandas to practice manipulating it, but I ran into a slight problem. Basically, the pandas load the data improperly. And it does so consistently. Let me show you ...
0 votes
1 answer
93 views

How to filter in pandas based on string value? [closed]

I want to filter a pandas dataframe based on the id of the row. The id is a sequence of patient names. For example, I have columns in this format: ID | A | B And ...
6 votes
3 answers
294 views

How to get K most different rows in csv?

We have boring CSV with 10000 rows of ages (float), titles (enum/int), scores (float). How to select 1000 most different rows? I look for a general solution that ...
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2 votes
1 answer
91 views

Recommendations for Data Visualization solution for large CSV file on a non-profit website

I would like your advice and recommendations for a non-profit that is trying to turn a large CSV file into meaningful information. I am part of a non-profit that would like to turn a 23,000 row x 23 ...
0 votes
1 answer
6k views

unhashable type: 'numpy.ndarray' [closed]

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0 votes
1 answer
64 views

Scrapping data from a CSV file [closed]

So, I'm a rookie at web scrapping and Python in general, and I'm having quite a hard time learning it. I'm trying to get some data from a csv file, but so far I could only split lines and columns. I ...
0 votes
1 answer
49 views

CSVs: how to output missing data to make processing easier?

If supplying data (that can be either string or numeric) via CSVs, what's a good strategy for marking that a value is missing? Some non-empty sentinel, like NA ...
0 votes
4 answers
130 views

How to view entire 5788 rows and 7 columns.?

I want to see entire 5788 rows and 7 columns of my CSV data. I used below code and it is giving little data by stating [5788 rows x 7 columns] but showing only 10 rows and 5 columns in python prompt. ...
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2 answers
2k views

Getting some data from a csv file into a list of tuples using Python

I have a csv file of almost 2 million rows and about 20 columns. I am interested in about 40000 of these rows, and in 5 of the columns 'squat', 'bench', 'deadlift', 'bodyweight', 'total'. I'd like to ...
1 vote
1 answer
919 views

How do I change the location of Google BigQuery

So, I'm trying to use Google BigQuery for the first time for a project of mine, and I'm a bit confused. The documentation isn't helping much, and it looks like all the Google employees are gone thanks ...
1 vote
0 answers
547 views

Dask error when reading data from a large zip file

I have a .zip folder with a lot of .csv files which I read into a Dask DataFrame like this: ...
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1 vote
1 answer
77 views

Representing 2 dimensional data for facial recognition

My goal is to train a neural network to recognize faces based on a list of landmark points generated by Google Firebase ML-Kit. Since I just started familiarizing myself with ML, I only want my model ...
1 vote
2 answers
87 views

I am working on a pose dataset and want to convert this data into CSV format. How to convert this data into a single row of data

This is the data for one pose. I have a lot of data like this which i want to convert to CSV to apply machine learning algorithm. I am assuming I have to convert this data into a single row of comma ...
1 vote
0 answers
16 views

Built strong base for Unsupervised Learning [closed]

I’m am new into machine learning, recently I have put a task upon my shoulders to Detect Outliers in Dataset. The anomaly detection should be done using Unsupervised learning and preferably use ...
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0 votes
1 answer
238 views

How to split a CSV into a dataframe without newline

Currently I'm using pyspark to make my df from a csv. However when I take the data in, it puts each element on a new line. Is there any way to keep the elements separate, and keep them on the same ...
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1 vote
2 answers
1k views

Should I use MongoDB instead of storing data in CSV in python?

I am currently storing data crawled from multiple websites having same but still different structure so every crawler is saving data in separate csv. I am planning to store the data using MongoDB ...
0 votes
1 answer
104 views

Deep learning model gives random results

First I am new to machine learning if it is an obvious question, I am sorry. ...
0 votes
1 answer
605 views

How can I override the values of 1 column in a big dataframe using a small second dataframe? [closed]

I have a Pandas dataframe (donations_df) that contains thousands of donations. Each donation row has many columns, but the two key ones for my question are: A <...
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1 vote
2 answers
33k views

How to save API data into CSV format?

Is there an easy way to convert API data with python commands and output the results in CSV format? Here's what I'm doing now: ...
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0 votes
1 answer
96 views

How do you see the element of a csv table with many columns (>30) which the names of its columns is more than 10 character in pandas?

How do you see in pandas the element of a csv table with many columns (>25) which the names of its columns is more than 10 character? I have 5000 rows and 32 columns and the label of some columns ...
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1 vote
2 answers
5k views

How to create a parquet file from a query to a mysql table

Updating a legacy ~ETL; on it's base it exports some tables of the prod DB to s3, the export contains a query. The export process generates a csv file using the following logic: ...
0 votes
1 answer
6k views

Pandas - how to make further sub-groups after groupby( ) and get_group( )

Sample data in .csv format ...
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4 votes
1 answer
2k views

Any one read the over 100gb csv file and successfully concatenation?

I have been searching for the deal with large CSV file read method Its over 100gb and need to know how deal with the chunk file processing and make concatenation faster ...
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