def Text_Transformation_controller(crawling_data,max_n_gram_size):
te = text_extract.TextExtractor(crawling_data['content']) #Run the text extractor
output = dict() #create the dictionary
output['metadata'] = te.extractMetadata() #Get metadata from html
output['metadata']['url'] = crawling_data['url'] #get from crawling API
output['metadata']['timestamp'] = crawling_data['metadata']['timestamp'], #get from crawling API
list_of_words = te.getListOfWords()
n_grams = ngrams.generate_ngrams(list_of_words,max_n_gram_size)
titles = ngrams.generate_ngrams(te.getTitleListOfWords(),max_n_gram_size)
headers = ngrams.generate_ngrams(te.getHeaderListOfWords(),max_n_gram_size)
output['ngrams'] = {
'all' : n_grams,
'headers' : headers, #we need to parse these
'title' : titles #we need to parse these.
}
output["text"] = list_of_words
#This line will print the results in output
print(json.dumps(output,indent=4))
return output
def Text_Transformation_controller(crawling_data, max_n_gram_size):
te = text_extract.TextExtractor(
crawling_data['content']) #Run the text extractor
output = dict() #create the dictionary
output['metadata'] = te.extractMetadata() #Get metadata from html
output['metadata']['url'] = crawling_data['url'] #get from crawling API
output['metadata']['timestamp'] = crawling_data['metadata'][
'timestamp'], #get from crawling API
list_of_words = te.getListOfWords()
n_grams = ngrams.generate_ngrams(list_of_words, max_n_gram_size)
titles = ngrams.generate_ngrams(te.getTitleListOfWords(), max_n_gram_size)
headers = ngrams.generate_ngrams(te.getHeaderListOfWords(),
max_n_gram_size)
output['ngrams'] = {
'all': n_grams,
'headers': headers, #we need to parse these
'title': titles #we need to parse these.
}
output["text"] = list_of_words
#This line will print the results in output
print(json.dumps(output, indent=4))
return output
def test6(self):
test_file = 'example6'
print(" Testing {0}.txt".format(test_file))
txt_file = os.path.join('Examples','txt_files','{0}.txt'.format(test_file))
expected_output_file = os.path.join('Examples','expected_ngram_output','{0}.json'.format(test_file))
data = ngrams.generate_ngrams(openTxtFileAsList(txt_file),5)
expected_output = openJsonFile(expected_output_file)
self.assertDictEqual(data,expected_output)
def test7(self):
test_file = 'example7'
print(" Testing {0}.html".format(test_file))
html_file = os.path.join('Examples','html_files','{0}.html'.format(test_file))
expected_output_file = os.path.join('Examples','expected_e2e_test_output','{0}.json'.format(test_file))
expected_output = openJsonFile(expected_output_file)
te = TextExtractor(openHtmlFileAsString(html_file))
data = ngrams.generate_ngrams(te.getListOfWords(),5)
self.assertDictEqual(data,expected_output)
def generate_ngrams_threaded(n, c):
print("starting ngrams of length", n)
ngrams = generate_ngrams(n, c)
print("generated ngrams of length", n)
return ngrams
def generate_expected_output():
if not os.path.exists('Examples'):
print("ERROR: please invoke this script one level below the 'Examples' directory")
sys.exit(1)
if not os.path.exists(os.path.join('Examples','expected_html_output')):
os.mkdir(os.path.join('Examples','expected_html_output'))
if not os.path.exists(os.path.join('Examples','expected_ngram_output')):
os.mkdir(os.path.join('Examples','expected_ngram_output'))
if not os.path.exists(os.path.join('Examples', 'expected_e2e_test_output')):
os.mkdir(os.path.join('Examples', 'expected_e2e_test_output'))
#TEXT EXTRACTION TESTS
#for all of the html files
for filename in os.listdir(os.path.join('Examples', 'html_files')):
file_path = os.path.join('Examples', 'html_files', filename)
#grab the contents
with open(file_path, 'r') as infile:
input_string = infile.read()
#extract them
te = TextExtractor(input_string)
#the output file name will be the input file name, but .txt instead of .html.
outfile_name = "{0}.txt".format(filename.split('.')[0])
#the output file goes to the expected_html output directory.
outfile_name = os.path.join('Examples','expected_html_output', outfile_name)
#dump the results into the output file.
with open(outfile_name, 'w') as outfile:
outfile.write(str(te))
print("Wrote {0}".format(outfile_name))
#NGRAM TESTS
#for every text input file.
for filename in os.listdir(os.path.join('Examples', 'txt_files')):
file_path = os.path.join('Examples', 'txt_files', filename)
#grab its contents.
with open(file_path, 'r') as infile:
input_string = infile.read().split()
#Feed them into the ngram generator. We test 5 grams, because that's what's in the system spec.
data = ngrams.generate_ngrams(input_string, 5)
#output file name is the input file name .json
outfile_name = "{0}.json".format(filename.split('.')[0])
#the output file goes in the expected_ngram_output directory
outfile_name = os.path.join('Examples','expected_ngram_output', outfile_name)
#dump a json to the output file.
with open(outfile_name, 'w') as outfile:
json.dump(data, outfile)
print("Wrote {0}".format(outfile_name))
#E2E TESTS
#for every html file
for filename in os.listdir(os.path.join('Examples', 'html_files')):
file_path = os.path.join('Examples', 'html_files', filename)
#grab the contents
with open(file_path, 'r') as infile:
input_string = infile.read()
#extract them
te = TextExtractor(input_string)
#ngram them
data = ngrams.generate_ngrams(te.getListOfWords(), 5)
#the output file name will be the input file name, but .txt instead of .html.
outfile_name = "{0}.json".format(filename.split('.')[0])
#the output file goes to the expected_html output directory.
outfile_name = os.path.join('Examples', 'expected_e2e_test_output', outfile_name)
#dump the results into the output file.
with open(outfile_name, 'w') as outfile:
json.dump(data, outfile)
print("Wrote {0}".format(outfile_name))
from ngrams import generate_ngrams, cdf, pick_ngram, filter_dict_keys
### Complex text generation (predict next n using last m grams)
# basically ngrams help you pick the next n words with the highest probility given the previous n words
# We could have the previous n be an anction list and the next n be on of our patterns
# Could have everything be patterns or everything be action list
# What should n be? it doesn't seem like we have enough data for it to be that large
# Should I get rid of all of the view switches?
past_n_target = 6 # how far to try and look back
past_n_min = 2 # min amount to look back. if a matching ngram of this length is not found, the program will exit
forward_n = 1 # how many new grams to add each iteration
min_ngrams_needed = 2 # how many ngrams need to be found
all_ngrams = generate_ngrams(past_n_target + forward_n, corpus)
generated = ['the']
for i in range(0, 20):
filtered_ngrams = {}
temp_past_n = min(past_n_target, len(generated))
while not filtered_ngrams:
filtered_ngrams = filter_dict_keys(all_ngrams,
generated[-temp_past_n:],
starting_index=past_n_target -
temp_past_n)
print(generated[-temp_past_n:], filtered_ngrams, len(filtered_ngrams))
temp_past_n -= 1
if (temp_past_n < past_n_min) or (len(filtered_ngrams) <
min_ngrams_needed):
