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start [2017/09/15 08:37]
zoza [other]
start [2018/04/18 08:01]
zoza
Line 1: Line 1:
 ====== POSTDOCTORAL RESERACH ====== ====== POSTDOCTORAL RESERACH ======
 +
 +===== Python and SOM =====
 +
 + - python module by Vahid Moosavi of CAAD, **sompy**
 +
 + - another SOM python implementation,​ **somoclu**:​ https://​somoclu.readthedocs.io/​en/​stable/​index.html ​
  
 ===== Scraping and mining twitter streams ===== ===== Scraping and mining twitter streams =====
Line 9: Line 15:
   - **mine the tweets** using [[mine-tweets-py|python mining script]]   - **mine the tweets** using [[mine-tweets-py|python mining script]]
  
 +A resourceful guide for Twitter textmining in Python: https://​marcobonzanini.com/​2015/​03/​23/​mining-twitter-data-with-python-part-4-rugby-and-term-co-occurrences/ ​
 +
 +===== Scraping and mining Dezeen articles =====
 +
 +  * with **scrapy**
 +
 +The setup: python3 in the conda environment ​
 +<​code>​$ conda create -n bots python=3.4 # create a virtual environment named "​bots"​
 +$ source activate bots # activate the environment;​ check if active: conda info --envs
 +$ conda install -n bots -c conda-forge scrapy # install scrapy for the named environment
 +</​code>​
 +
 +Run scrapy directly from the shell: ​
 +<​code>​$ scrapy startproject dezeen # start a project</​code>​
 +
 +Detailed instructions here: https://​doc.scrapy.org/​en/​latest/​intro/​tutorial.html#​creating-a-project
 +
 +Create a _spider_ in the folder dezeen/​dezeen/​spiders/​ within which you will create a class that will declare its' name. This name will be used to call the spider from the console: ​
 +
 +<​code>​$ scrapy crawl spider_name</​code>​
 +
 +It is also important to declare fields in pages that will be scraped. This is done in the dezeen/​items.py file, using eg (the Class is already declared when you start project).
 +
 +<code python>​Class DezeenItem(Item):​
 +title = Field()
 +link = Field()
 +description = Field()
 +</​code>​
 +
 +These fields will be later used as part of the item dictionary (e.g. item['​link'​])
  
 ====== DOCTORAL RESEARCH ====== ====== DOCTORAL RESEARCH ======
start.txt ยท Last modified: 2018/04/26 13:46 by zoza