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Questions tagged [mining]

235 questions
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Extract information from a structured text file to create a dataframe in R

I need to organize the information from a long (and old) text file containing thousands of items into a dataframe. The information in the text file follows the same structure in all the items. My goal is to arrange each item in a different row of…
Andres
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Prepare a csv file for process mining

hope you are doing well ! I was following tutorials for process mining using 'PM4PY', but I found difficulties in the csv file , in my csv file I have this columns : 'id', 'status', 'mailID', 'date'.... ('status' is same as 'activity' that contain…
marc-stupid
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String match in r

I have two data frames D1 and D2 as mentioned below I want to compare D1 and D2 like "Issues" of D1 with "list_of_issues" of D2 ID = c(1, 2, 3, 4) Issues = c('CI', 'E,CI', 'H,A', 'CI,E') Location = c('x', 'y', 'z', 'w') Customer = c('a', 'b', 'c',…
Partha sarathi
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How to generate a counter for finding a hash with 9 leading zeroes

I'm trying to create a function that will generate a hash using sha1 algorithm with 9 leading zeroes. The hash is based on some random data and, like in concurrency mining, I just want to add 1 to the string that is used in the hash function. For…
Alin Gabriel Eremia
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Dataset with lots of zero value as missing value. What should I do?

I am currently working on IMDB 5000 movie dataset for a class project. The budget variable has a lot of zero values. They are missing entries. I cannot drop them because they are 22% of my entire data. What should I do in Python? Some suggested…
user10724844
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why tensorflow code take high GPU memory and low GPU-util compute, and crypto mining takes low mamory usage and highy computes?

i just buy GTX graphics card. nvidia-smi is handy command for details. when i am executing machine learning code and tensorflow GPU details shows it uses high memory (7000/8000) and low compute utils 5% , low electricity 40w/180w. and when i am…
parth vadhadiya
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Text Mining to extract animal types from text

I need to do an experiment and I am new in NLP. I have read books that explain the theoritical issues but when it comes to practical I found it hard to find a guide. so please who knows anything in NLP especially the practical issues tell me and…
up-up
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How can I count data groups sequential order in the same column in SQL Server 2014?

I need to find frequency of sequences of data rows.I have like 17000 rows data which is including almost 120 different kind of data and I need to find which sequences of data how many times repeated? For instance: a b c a b d a b c I am trying to…
gn khrmn
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How to speed-up Geth transactions in private blockchain?

I'm testing Ethereum smart contracts with web3j and Geth. Geth is running with scripts like…
4ntoine
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bitcoin block solving, all nonces used but no hit

I'm trying to understand how bitcoin block solving attempts works. I see a nonce is a 32-bit number, so around 4 billion values to try. Also, I saw a famous mining pool having 500 Ph/s power at hand. And I found there one particular block solved in…
Jean F.
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which algorithm can be used to detect temporal pattern?

I'm trying to detect temporal relations or temporal patterns in my data . I've used Apriori associater in Weka but seems to ignore the time and find only sequences . can you please suggest a toolkit or package for temporal pattern mining ?
Mazen
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machine learning/data mining for pattern data finding

A have some problems in my audio network (I work with IP audio) - from time to time I have a short gaps in my audio stream. I have a logger which record all the streams. I've write small script with python and ffmpeg (and borrowed some JavaScript…
tiler
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document term matrix using list of terms

I am trying to build a document term matrix using preidentifed terms. The corpus is identified in the variable cname and the file with the preidentified terms are read into the terms variable which is then converted into a list. When I run the code…
theiman
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creating Ethereum tokens as mining rewards

I have managed to create a registered Ethereum "Token" using Primarily the "how to" from the Frontier website. I intend to proceed with a crowdsource ing contract to raise funds for what will be a fundraising event capable of doing some good in the…
DrSluice
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How do bitcoin miners check for double-spend or over-spend?

The only way i can visualize the process is: search the blockchain for all the transactions that have the same source address as the transaction being processed, add them all up (including the trx being processed) to verify they add up to less than…
user2223142
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