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0
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1answer
63 views

Is hadoop designed only for “simple” data processing jobs, where communications between the distributed nodes are sparse?

I am not a professional coder, but rather an engineer/mathematician that uses computer to solve numerical problems. So far most of my problems are math-related, such as solving large scale linear ...
2
votes
1answer
88 views

Random forest ML algorithm suitable for use on cluster based HPC?

I need help in identifying a better algorithm. I have developed a script using pythons scipy package to analyse a rather large model that I wish to solve. The model contains over 12GB of data ...
0
votes
4answers
3k views

How to insert/update a large amount of data into mysql using php

I have an excel sheet which has a large amount of data. I am using php to insert the data into mysql server. I have two problems 1) I have to update a row if the id already exists, else insert the ...
5
votes
2answers
447 views

Design of high performance file processing web application

I'm trying to design a web app with ability to scale but can't wrap my heads around few concepts. I want to design it right but im not a experienced programmer, i have more of a system engineering ...
4
votes
3answers
269 views

Big Data: Can it be pre-processed?

My question is about "big data". Basically, big data involves the analysis of a large amount of data to make meaningful insights from it. I would like to know: Whether or not large amounts of data ...
7
votes
3answers
2k views

Why Big Data Needs To Be Functional?

I started working on a new project lately related to Big Data for my internship. My managers recommended to start learning functional programming (They highly recommended Scala). I had a humbled ...
0
votes
2answers
126 views

finding patterns into logs

I am trying to put together a way to figure out if incidents occurred based on log content. Typically, on log (or db table) would contain a list of transactions composed as follow: {Timestamp} ...
0
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0answers
91 views

Searching in a large dataset

I am working on a model of social interactions in mice. I have mice and boxes and a simulation that outputs which mouse stays in which box during which time period. The problem is how to obtain, in ...
1
vote
1answer
160 views

How to cross-reference many character encodings with ASCII OR UTFx?

I'm working with a binary structure, the goal of which is to index the significance of specific bits for any character encoding so that we may trigger events while doing specific checks against the ...
1
vote
0answers
167 views

What's a good approach for updating millions of rows independently?

I have a MongoDB database with millions of users in collection. An aggregation function returns millions of results with the following format: Array ( [_id] => Array ( [user] => MongoId ...
1
vote
2answers
764 views

Data Aggregation of CSV files java

I have k csv files (5 csv files for example), each file has m fields which produce a key and n values. I need to produce a single csv file with aggregated data. I'm looking for the most efficient ...
0
votes
1answer
141 views

QFS (Quantcast File System): Scalable for medium “big data” problems or only for extremely large

I am doing some investigating and research into programming "big data", and am particularly interested in QuantCast (QFS) because it is written in my own favourite programming language, C++. Looking ...
0
votes
0answers
130 views

Need server suggestion to handle Twitter API

I am working on generating some statistics by using twitter trends and streaming API. ( I have adjusted keywords such that traffic I get from twitter daily is of max size 1GB) I was currently ...
2
votes
1answer
208 views

Experimenting with “big data” and map reduce

I was thinking about experimenting a bit with using mapreduce and such on a dataset we have to see if we can benefit from it in any way. What route should I go if I want to be able to instantly, ...
4
votes
5answers
1k views

Suggested Web Application Framework and Database for Enterprise, “Big-Data” App?

I have a web application that I have been developing for a small group within my company over the past few years, using Pipeline Pilot (plus jQuery and Python scripting) for web development and ...
4
votes
4answers
1k views

NoSQL and BIG DATA

I am doing an internship on Big Data technologies so I am new to this area. My question is about the use of NoSQL in the Big Data architecture. Do we need always to use a distributed storage (like ...
0
votes
2answers
480 views

Algorithms for data structures in distributed system

The hash table data structure can be easily spread across multiple machines with a simple algorithm to distribute the keys: machine_to_query = item_key % machine_count When you want to read and ...
7
votes
3answers
2k views

Python in Big Data?

Can python be efficiently implemented in big data field? To be precise I am building an web app that analyses really big data in medical health care field consisting of medical history and huge ...
3
votes
1answer
627 views

How does Google store search trends in backend?

Google trends shows what query has been searched how many times and some other properties of the said query. But how is this data stored in a database? Storing a new row for every search does not ...
1
vote
2answers
148 views

Using replacement to get possible outcomes to then search through HUGE amount of data

I have a database table holding 40 million records (table A). Each record has a string a user can search for. I also have a table with a list of character replacements (table B) i.e. i = Y, I = 1 ...
1
vote
1answer
668 views

Java BufferedReader vs Separate Producer consumer thread

I have a very big file delimited by some sequence of characters '*L*I*N*E'. The file will be of the order of 250G. And each line comes around 600bytes to 1000 bytes. I will be performing the following ...
1
vote
1answer
290 views

Developing an analytics's system processing large amounts of data - where to start

Imagine you're writing some sort of Web Analytics system - you're recording raw page hits along with some extra things like tagging cookies etc and then producing stats such as Which pages got most ...
13
votes
4answers
12k views

How to learn Cloud Computing and Big Data at home? [closed]

I want to learn Cloud Computing and Big Data at home. Is it possible to learn these technologies on home PC? Which technologies to learn in Cloud Computing? Which technologies to learn Big Data ...
21
votes
4answers
990 views

What is the definition of “Big Data”?

Is there one? All the definitions I can find describe the size, complexity / variety or velocity of the data. Wikipedia's definition is the only one I've found with an actual number Big data ...
3
votes
1answer
247 views

Tools for Operating on Large Amounts of Text Data

I need to handle and process ~5 million news articles, an amount small enough to fit on a commodity desktop but too large to process serially. Thus far, I have been using Python/pickle for ...
11
votes
3answers
1k views

Choose C++ or Java for applications requiring huge amounts of RAM? [closed]

I'm thinking of scientific applications that are mostly processor-bound and heavy on heap usage (at least several gigabytes). Any other time of the year I would happily go with C++, but in this case I ...