def resolver(path='.'):
return pipe(
globs,
mapcat(lambda n: path_f(path).glob(n)),
map(lambda p: p.read_text()),
tuple,
)
def __or__(self, function):
if __.is_str(function):
# function = globals()[function]
log.debug(f'function space: {pprint.pformat(self.function_space)}')
function = eval(function, self.function_space)
if is_traversal_function(function):
nids, _neighbors = zip(*self.selection)
return _.pipe(
# self.selection,
# _.mapcat(_.second),
nids,
# _.concat,
set,
# _.do(print),
_.map(function(self.graph)),
_.mapcat(tuple),
set,
lambda node_ids: self.graph(*node_ids),
)
elif is_introspect_function(function):
node_ids, _nb = zip(*self.selection)
return _.pipe(
node_ids,
set,
_.map(function(self.graph)),
ValuePipe,
)
else:
node_ids, _nb = zip(*self.selection)
return ValuePipe(function(node_ids))
def fetch(content, prefix):
return {
"parts":
pipe(
parse("$..layers").find(content),
mapcat(lambda m: m.value),
filter(lambda v: v["exportOptions"]["exportFormats"]),
filter(lambda v: re.match(prefix, v["name"])),
map(lambda v: glom(
v,
{
"key":
"name",
"layout": (
"frame",
{
"left": ("x", round),
"top": ("y", round),
"width": ("width", round),
"height": ("height", round),
},
),
},
)),
sorted(key=lambda p: p["key"]),
list,
)
}
def visit_loop_expression(node):
return mapcat(
visit_node,
iter_unlooped_nodes(
loop_variables_nodes=node['loop_variables'],
node=node['expression'],
))
def iter_json_file_names(*pathnames):
for json_file_path in sorted(mapcat(
lambda pathname: glob.iglob(os.path.join(ast_dir_path, pathname)),
pathnames,
)):
json_file_name = os.path.basename(json_file_path)
yield json_file_name
def test_flowly_kv_transform__mapcat(executor):
actual = executor(
kv_transform(mapcat(lambda i: [10 * i, 20 * i])),
[(i % 2, i) for i in range(20)],
npartitions=10,
)
assert sorted(actual) == sorted(
it.chain([(i % 2, 10 * i) for i in range(20)],
[(i % 2, 20 * i) for i in range(20)]))
def test_toolz_mapcat(executor):
actual = executor(
mapcat(lambda s: s.upper()),
["ab", "cde"],
npartitions=2,
)
expected = ['A', 'B', 'C', 'D', 'E']
assert list(actual) == expected
def groupby_many(f, it):
return toolz.pipe(
it,
curried.mapcat(
toolz.compose_left(
lambda element: (f(element), [element]),
functional.star(itertools.product),
)),
edges_to_graph,
)
def iter_ast_json_file_names(filenames):
json_file_paths = pipe(
filenames,
map(lambda pathname: os.path.join(args.json_dir, 'ast', pathname)),
mapcat(glob.iglob),
sorted,
)
for json_file_path in json_file_paths:
json_file_name = os.path.basename(json_file_path)
file_name_head = os.path.splitext(json_file_name)[0]
yield json_file_name
def runlist(yamls):
nodelist = list(
mapcat(
lambda f: map(lambda i: (f[0], i), f[1].get('deps', [PHONY_DEP])),
yamls.items()))
return pipe(nodelist, nx.DiGraph,
nx.topological_sort,
list,
reversed,
filter(lambda r: r != PHONY_DEP),
list) # noqa yapf: disable
def recursive_get_child_ids(frame: pd.DataFrame, ids: list):
return pipe(
ids,
c.mapcat(lambda an_id: [
an_id,
*pipe(
get_in([0, "Ids"], frame.loc[an_id].Relationships, []),
Block.recursive_get_child_ids(frame),
),
]),
list,
)
def code_section(course: Course, course_root: str, path: str, lines=()):
path = resolve_path(course_root, path)
log.debug(f'Inserting code from {path}')
if lines:
lines_str = pipe(
lines,
mapcat(lambda v: [v] if is_int(v) else v),
' '.join,
lambda t: 'hl_lines="{' + t + '}"',
)
return f'```\n#!python3 {lines_str}\n{path.read_text()}\n```'
else:
return f'```python3\n{path.read_text()}\n```'
def Paragraphs(text):
"""
Creates p tags from each blank line separated block of text.
Any blocks of text with a blank line in between them (`\n\n` sequence) is
separated and given its own `p` tag. This is the minimum formatting you'd
probably expect in any static content generator.
Subscribes to the entire registry.
"""
return t.pipe(re.split(r'(?m)(?:\n|^)(\[\|\|\d+\|\|\])', text),
tc.mapcat(lambda x: x.split('\n\n')),
tc.filter(lambda x: not not x),
tc.map(lambda x: x if re.match(r'^\[\|\|\d+\|\|\]$',x) else ['p', x.rstrip()]),
tc.cons('div'),
list)
def parse_violations(do_request):
""""""
logger.info('Parsing violations')
return toolz.compose(
# filter out meaningless values
curried.filter(lambda x: x not in ('IME PREDPISA', '')),
# extract data from each row
curried.map(lambda tr: pq(tr).find('td').eq(1).text()),
# get all rows in tables
curried.mapcat(lambda page: page('table.MsoNormalTable tr')),
# get all subpages
curried.map(do_request),
# let's skip empty urls/strings
curried.filter(lambda a: a),
# get menu links
curried.map(lambda a: pq(a).attr('href')),
# get menu elements
lambda doc: doc('.moduletable_menu a'),
# get main page
do_request,
)(VIOLATION_URL + '/index.php')
def _make_samples(meta, shuffle):
def _to_sample(person, images):
# Random images needed for representation interpolation (3.5)
x1 = _get_random_image()
x2 = _get_random_image()
return m(id=person["id_class"] - 1,
images=freeze(list(images)),
x1=freeze(x1),
x2=freeze(x2))
samples = pipe(
meta["persons"],
tz.take(limit) if limit is not None else tz.identity,
tz.map(lambda p: m(p=p,
i=tz.partition(
args.N_images,
_shuffled(p["images"])
if shuffle else p["images"]))),
tz.mapcat(lambda s: [_to_sample(s.p, i) for i in s.i]),
tz.take(limit) if limit is not None else tz.identity, list)
if shuffle:
random.shuffle(samples)
return samples
def parse_sessions(do_request):
""""""
logger.info('Parsing sessions')
def get_votings(voting_page):
# parse transcripts for a session
transcript_urls = voting_page(':contains("Zapisi seje")')\
.closest('td')\
.find('a')\
.map(lambda i, r: pq(r).attr('href'))
# TODO: parse transcript_urls
# parse votings in a session
epas_and_votes_urls = toolz.compose(
lambda p: p('table.dataTableExHov > tbody tr')
# we're interested into those with more than one link
.filter(lambda i, r: len(pq(r).find('a')) > 1)
.map(lambda i, r: {'epa_url': pq(r).find('td').eq(0).find('a').attr('href'),
'vote_url': pq(r).find('td').eq(3).find('a').attr('href')}),
)(voting_page)
# arrow.get('(23.09.2015)', 'DD.MM.YYYY')
import pdb; pdb.set_trace()
return {}
return toolz.compose(
# parse voting from session url
curried.map(get_votings),
# paginate all votings per session
curried.mapcat(partial(paginate_url, do_request=do_request)),
# get all session urls
curried.map(lambda r: pq(r).attr('href')),
# get all anchor elements per page
curried.map(lambda p: p('table.dataTableExHov tbody a')),
# get a list of all pages
partial(paginate_url, do_request=do_request),
)(DZ_RS_SESSIONS_URL)
def visit_boolean_expression(node):
return mapcat(visit_node, node['operands'])
return map(
toolz.first,
graph_traverse(source=(source, 0),
get_neighbors=get_neighbors_limiting_radius),
)
edges_to_graph = toolz.compose(
curried.valmap(toolz.compose(frozenset, curried.map(toolz.second))),
curried.groupby(toolz.first),
)
graph_to_edges = toolz.compose_left(
curried.keymap(lambda x: (x, )),
dict.items,
curried.mapcat(functional.star(itertools.product)),
)
reverse_graph = toolz.compose_left(
graph_to_edges, curried.map(toolz.compose_left(reversed, tuple)),
edges_to_graph)
cliques_to_graph = toolz.compose_left(
curried.mapcat(lambda clique: itertools.permutations(clique, r=2)),
edges_to_graph)
def get_connectivity_components(graph: Dict) -> Iterable[FrozenSet]:
"""Graph is assumed to undirected, so each edge must appear both ways."""
nodes_left = frozenset(graph)
while nodes_left:
9: 10
}),
),
"itemfilter": (
chained(dict,
curried.itemfilter(lambda i: i[0] % 2 == 0 and i[1] < 4)),
dict.items({
1: 2,
2: 3,
3: 4,
4: 5
}),
),
# example taken from toolz docs
"mapcat": (
chained(curried.mapcat(lambda s: [c.upper() for c in s]), list),
[["a", "b"], ["c", "d", "e"]],
),
"reduce": (curried.reduce(op.add), range(20)),
"reduceby": (curried.reduceby(lambda x: x % 2 == 0, op.add), range(20)),
"topk": (chained(curried.topk(5), list), range(20)),
"curried.unique": (chained(curried.unique, sorted), [1, 1, 2, 3, 4, 4]),
"unique": (chained(toolz.unique, sorted), [1, 1, 2, 3, 4, 4]),
}
def params(spec, m):
return pytest.mark.parametrize(spec, [v for (_, v) in sorted(m.items())],
ids=sorted(m.keys()))
def visit_boolean_expression(node):
return mapcat(visit_node, node['operands'])
def glob(self, root, recursive=True):
# walk: root [dirs] [files] -> for each dir (tup.2), for
# each file (tup.1), we need to join with root
return pipe(os.walk(expanduser(root)),
mapcat(lambda tup: map(lambda f: join(tup[0], f))
(concat([tup[2], tup[1]]))), list) # noqa
def visit_comparaison(node):
return mapcat(visit_node, (node['left_operand'], node['right_operand']))
def visit_regle(node):
return mapcat(
lambda node1: visit_node(node1)
if node1['type'] == 'pour_formula' else [visit_node(node1)],
node['formulas'],
)
def load_regles_file(json_file_name):
return pipe(
read_ast_json_file(json_file_name),
filter(lambda node: 'batch' in node['applications']),
mapcat(python_source_visitors.visit_node),
)
def visit_comparaison(node):
return mapcat(visit_node, (node['left_operand'], node['right_operand']))
def subcomponent_multi(graph, vertices, mode="out"):
"""Return concatenated subcomponents generated by the given list of
vertices.
"""
return tlz.mapcat(lambda vertex: graph.subcomponent(vertex, mode=mode),
vertices)
def visit_regle(node):
return mapcat(
lambda node1: visit_node(node1) if node1['type'] == 'pour_formula' else [visit_node(node1)],
node['formulas'],
)
def visit_product_expression(node):
return mapcat(visit_node, node['operands'])
def visit_loop_expression(node):
return mapcat(visit_node, iter_unlooped_nodes(
loop_variables_nodes=node['loop_variables'],
node=node['expression'],
))
def visit_function_call(node):
return mapcat(visit_node, node['arguments'])
def visit_function_call(node):
return mapcat(visit_node, node['arguments'])
def sync_slides(course_dir, loglevel):
'''Sync course slides from directory containing slide markdown files
COURSE-DIR: Path of section-specific course directory
(e.g. "~/courses/cs101/section-01") . Will search given directory
recursively for some number of course.yml files.
'''
setup_logging(loglevel)
api = canvas.api.get_api_from_config()
courses = canvas.course.courses_from_path(api, course_dir)
if not courses:
exit_with_msg('Could not find course information.')
log.info(f'{len(courses)} courses found.')
_.pipe(
courses,
_.map(lambda c: c.data['name']),
tuple,
yaml.dump,
lambda s: '\n' + s,
log.info
)
course_root = common.find_course_root(course_dir)
if not course_root:
exit_with_msg('Could not find course root given course'
f' dir: {course_dir}')
log.info(f'Found course root: {course_root}')
content_paths = common.find_content_paths(course_root)
slides_path = content_paths['slide']
log.info(f'Found slides path: {slides_path}')
slide_md_paths = _.pipe(
slides_path.glob('slide-*.md'),
sorted,
)
if not slide_md_paths:
exit_with_msg(
f'Could not find any slides in {slides_path}'
)
_.pipe(
slide_md_paths,
_.map(str),
sorted,
yaml.dump,
lambda s: 'Slides found:\n' + s,
log.info,
)
renderers = _.pipe(
courses,
_.map(lambda c: templates.slide.render_remark_slides(c, course_root)),
tuple,
)
def render_path(course, md_path):
for renderer in renderers:
html_path = Path(md_path.parent, f'{md_path.stem}.html')
html_content = renderer(md_path)
log.info(
f'Writing {len(html_content)} bytes to {html_path}'
)
html_path.write_text(html_content)
log.info(
f'Uploading {html_path} to course {course.data["name"]}:'
)
file_ep = canvas.file.upload_course_file(course, html_path)
log.info(
f' ...done {html_path} -> {course.data["name"]}'
)
return (course, md_path, html_path, file_ep)
all_content = _.pipe(
itertools.product(courses, slide_md_paths),
parallel.thread_map(lcommon.vcall(render_path), max_workers=10),
tuple,
)
pages = _.pipe(
courses,
_.mapcat(canvas.page.pages),
)
for course, md_path, html_path, file_ep in all_content:
page_content = templates.slide.slide_page(
course, course_root, md_path, html_path, file_ep,
)
page_path = Path(
content_paths['page'],
f'page-{md_path.name}',
)
log.info(f'Writing page for {md_path} --> {page_path}')
page_path.write_text(page_content)
def visit_product_expression(node):
return mapcat(visit_node, node['operands'])
def parse_content_into_count(max_num_words, allowed_parts_of_speech, list_of_content):
"""Return a dictionary of tokens (as keys) and counts (as values)"""
def is_english(s):
"""Predicate that estimates whether a given string is in English"""
try:
return langdetect.detect(s) == 'en'
except:
print("Couldn't detect the language of: {}".format(s))
return True
@tz.curry
def tokenize_and_filter_perc_func(allowed_parts_of_speech, given_text):
"""Return the tokens in the given text that are the allowed parts
of speech
This version uses the faster PerceptronTagger"""
return tz.pipe(
given_text,
lambda x: TextBlob(x, pos_tagger=PerceptronTagger()),
lambda x: x.tags,
tz.filter(lambda x: x[1] in allowed_parts_of_speech),
# limit to allowed parts of speech
tz.map(lambda x: x[0]), # return only the token
list,
)
@tz.curry
def tokenize_and_filter_nltk_func(allowed_parts_of_speech, given_text):
"""Return the tokens in the given text that are the allowed parts
of speech
This version uses the recommended tagger from NLTK, it is relatively
slow."""
return tz.pipe(
given_text,
nltk.word_tokenize,
lambda x: nltk.pos_tag(x),
tz.filter(lambda x: x[1] in allowed_parts_of_speech),
# limit to allowed parts of speech
tz.map(lambda x: x[0]), # return only the token
list,
print_and_pass)
if allowed_parts_of_speech == "all":
# Don't even tag parts of speech, just use everything
tokenize_func = lambda x: nltk.word_tokenize(x)
else:
tokenize_func = tokenize_and_filter_perc_func(allowed_parts_of_speech)
wordnet_lemmatizer = nltk.stem.WordNetLemmatizer()
lemma_fun = lambda x: wordnet_lemmatizer.lemmatize(x)
exclusion_list = ['//platform.twitter.com/widgets.js', 'align=', 'aligncenter', 'id=', 'width=', '/caption', 'pdf.pdf', u'//t.c\xe2rt', 'http']
# Yeah, this is a bit of a hack
return tz.pipe(
list_of_content, # given content
tz.map(lambda x: BeautifulSoup(x, 'html.parser').get_text()), # remove html in string
tz.filter(is_english), # limit to English entries
tz.map(lambda x: re.sub(r'http.*?(?=\s)', "", x)), # remove urls
chunk_string(500), # this is done to speedup the part of speech tagging
tz.mapcat(tokenize_func), # tokenize, and maybe filter by part of speech
tz.filter(lambda x: x not in exclusion_list), # filter out specific tokens
tz.filter(lambda x: re.sub(r'\W', "", x) != ''), # filter out punctuation-only strings
tz.map(lambda s: s.lower()), # convert to lower case
tz.map(lemma_fun), # convert tokens to a more standard lemma
tz.countby(tz.identity)) # count occurrences
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('-d', '--debug', action='store_true', default=False, help='Display debug messages')
parser.add_argument('-v', '--verbose', action='store_true', default=False, help='Increase output verbosity')
parser.add_argument('json_dir', help='Directory containing the JSON AST and data files')
global args
args = parser.parse_args()
logging.basicConfig(
level=logging.DEBUG if args.debug else (logging.INFO if args.verbose else logging.WARNING),
stream=sys.stdout,
)
if not os.path.exists(args.json_dir):
parser.error('json_dir {!r} does not exist'.format(args.json_dir))
if not os.path.isdir(generated_dir_path):
os.mkdir(generated_dir_path)
# Initialize a variables_definitions object and set global variable in visitors
variables_definitions = python_source_visitors.variables_definitions = VariablesDefinitions()
# Transpile verification functions
verif_sources = list(
mapcat(load_verifs_file, iter_ast_json_file_names(filenames=['coc*.json', 'coi*.json']))
)
verifs_source = Template("""\
from ..formulas_helpers import arr, cached, inf, interval, null, positif, positif_ou_nul, present, somme
def get_errors(formulas, saisie_variables):
errors = []
$verifs
return errors or None
""").substitute(verifs=textwrap.indent('\n'.join(verif_sources), prefix=4 * ' '))
write_source_file(
file_name='verifs.py',
source=verifs_source,
)
# Transpile formulas
constants = loaders.load_constants()
source_by_formula_name = dict(list(mapcat(
load_regles_file,
iter_ast_json_file_names(filenames=['chap-*.json', 'res-ser*.json']),
)))
def get_formula_source(variable_name):
source = source_by_formula_name.get(variable_name)
if source is not None:
return source
if variables_definitions.is_saisie(variable_name):
return python_source_visitors.make_formula_source(
expression='saisie_variables.get({!r}, 0)'.format(variable_name),
formula_name=variable_name,
)
if variable_name in constants:
return python_source_visitors.make_formula_source(
expression='constants[{!r}]'.format(variable_name),
formula_name=variable_name,
)
if variables_definitions.is_calculee(variable_name):
if not variables_definitions.is_calculee(variable_name, kind='base'):
log.debug('Variable {!r} is declared in tgvH file but has no formula'.format(variable_name))
return python_source_visitors.make_formula_source(
expression='0',
formula_name=variable_name,
)
assert False, variable_name
# Merge variable names coming from dependencies graph and variables definitions
# because some variables are missing in tgvH file;
# or some constants are declared in tgvH but are not used in formulas, only in verifs.
dependencies_by_formula_name = loaders.load_formulas_dependencies()
all_variable_names = set(concatv(
dependencies_by_formula_name.keys(),
concat(dependencies_by_formula_name.values()),
variables_definitions.definition_by_variable_name.keys(),
constants.keys(),
))
write_source_file(
file_name='formulas.py',
source=Template("""\
from __future__ import division
import inspect
from ..formulas_helpers import arr, cached, inf, interval, null, positif, positif_ou_nul, present, somme
def get_formulas(cache, constants, saisie_variables):
formulas = {}
$formulas
return formulas
""").substitute(
formulas=textwrap.indent(
'\n'.join(map(get_formula_source, sorted(all_variable_names))),
prefix=4 * ' ',
),
),
)
return 0
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('-d', '--debug', action='store_true', default=False, help='Display debug messages')
parser.add_argument('-v', '--verbose', action='store_true', default=False, help='Increase output verbosity')
global args
args = parser.parse_args()
logging.basicConfig(
level=logging.DEBUG if args.debug else (logging.INFO if args.verbose else logging.WARNING),
stream=sys.stdout,
)
if not os.path.isdir(json_dir_path):
os.mkdir(json_dir_path)
if not os.path.isdir(ast_dir_path):
os.mkdir(ast_dir_path)
# Load variables definitions
tgvh_infos = list(load_tgvH_file())
# Write constants
constant_by_name = pipe(
tgvh_infos,
filter(lambda val: val['type'] == 'variable_const'),
map(lambda d: (d['name'], d['value'])),
dict,
)
write_json_file(data=constant_by_name, file_name='constants.json')
# Write variables dependencies
regles_nodes = list(mapcat(load_regles_nodes, iter_json_file_names('chap-*.json', 'res-ser*.json')))
dependencies_by_formula_name = dict(list(mapcat(dependencies_visitors.visit_node, regles_nodes)))
write_json_file(data=dependencies_by_formula_name, file_name='formulas_dependencies.json')
# Write variables definitions
ast_infos_by_variable_name = {}
for regle_node in regles_nodes:
regle_infos = {
'regle_applications': regle_node['applications'],
'regle_linecol': regle_node['linecol'],
'regle_name': regle_node['name'],
'source_file_name': regle_node['source_file_name'],
}
regle_tags = list(pluck('value', regle_node.get('tags', [])))
if regle_tags:
regle_infos['regle_tags'] = regle_tags
for formula_node in regle_node['formulas']:
if formula_node['type'] == 'formula':
ast_infos_by_variable_name[formula_node['name']] = assoc(
regle_infos, 'formula_linecol', formula_node['linecol'])
elif formula_node['type'] == 'pour_formula':
for unlooped_formula_node in unloop_helpers.iter_unlooped_nodes(
loop_variables_nodes=formula_node['loop_variables'],
node=formula_node['formula'],
unloop_keys=['name'],
):
pour_formula_infos = merge(regle_infos, {
'pour_formula_linecol': formula_node['formula']['linecol'],
'pour_formula_name': formula_node['formula']['name'],
})
ast_infos_by_variable_name[unlooped_formula_node['name']] = pour_formula_infos
else:
assert False, 'Unhandled formula_node type: {}'.format(formula_node)
def rename_key(d, key_name, key_new_name):
return assoc(dissoc(d, key_name), key_new_name, d[key_name])
tgvh_infos_by_variable_name = pipe(
tgvh_infos,
filter(lambda d: d['type'] in ('variable_calculee', 'variable_saisie')),
map(lambda d: rename_key(d, 'linecol', 'tgvh_linecol')),
map(lambda d: (d['name'], d)), # Index by name
dict,
)
definition_by_variable_name = merge_with(merge, ast_infos_by_variable_name, tgvh_infos_by_variable_name)
write_json_file(data=definition_by_variable_name, file_name='variables_definitions.json')
return 0
def backward_subset_feature_selection(train_data: pd.DataFrame,
param_train_fn: TuningLearnerFnType,
features_sets: Dict[str, List[str]],
split_fn: SplitterFnType,
eval_fn: EvalFnType,
extractor: ExtractorFnType,
metric_name: str,
threshold: float = 0.005,
num_removed_by_step: int = 3,
early_stop: int = 2,
iter_limit: int = 50,
min_remaining_features: int = 50,
save_intermediary_fn: SaveIntermediaryFnType = None,
n_jobs: int = 1) -> ListLogListType:
"""
Performs train-evaluation iterations while testing the subsets of features
to compute statistics about the importance of each feature category
Parameters
----------
train_data : pandas.DataFrame
A Pandas' DataFrame with training data
param_train_fn : function (pandas.DataFrame, list of str) -> prediction_function, predictions_dataset, logs
A partially defined learning function that takes a training set and a feature list and
returns a predict function, a dataset with training predictions and training
logs.
features_sets: dict of string -> list
Each String Key on the dict is a subset of columns from the dataset, the function will
analyse the influence of each group of features on the model performance
split_fn : function pandas.DataFrame -> list of tuple
Partially defined split function that takes a dataset and returns
a list of folds. Each fold is a Tuple of arrays. The fist array in
each tuple contains training indexes while the second array
contains validation indexes.
eval_fn : function pandas.DataFrame -> dict
A partially defined evaluation function that takes a dataset with prediction and
returns the evaluation logs.
extractor: function str -> float
A extractor that take a string and returns the value of that string on a dict
metric_name: str
String with the name of the column that refers to the metric column to be extracted
num_removed_by_step: int (default 3)
Number of features removed at each iteration
threshold: float (default 0.005)
Threshold for model performance comparison
early_stop: int (default 2)
Number of rounds without improvement before stopping process
iter_limit: int (default 50)
Maximum number of iterations before stopping
min_remaining_features: int (default 50)
Minimum number of features that should remain in the model,
combining num_removed_by_step and iter_limit accomplishes the same
functionality as this parameter.
save_intermediary_fn : function(log) -> save to file
Partially defined saver function that receives a log result from a
tuning step and appends it into a file
Example: save_intermediary_result(save_path='tuning.pkl')
n_jobs : int
Number of parallel processes to spawn.
Returns
----------
logs: list of list of dict
A list log-like lists of dictionaries evaluations. Each element of the
list is validation step of the algorithm.
"""
selector_fn = remove_features_subsets(extractor=extractor,
metric_name=metric_name,
num_removed_by_step=num_removed_by_step)
stop_fn = aggregate_stop_funcs(
stop_by_no_improvement_parallel(extractor=extractor, metric_name=metric_name, early_stop=early_stop,
threshold=threshold),
stop_by_iter_num(iter_limit=iter_limit),
stop_by_num_features_parallel(extractor=extractor, metric_name=metric_name,
min_num_features=min_remaining_features)
)
used_subsets = [features_sets.keys()]
used_features = [list(mapcat(lambda key: features_sets[key], subset)) for subset in used_subsets]
trainers = [lambda df: param_train_fn(df, feat) for feat in used_features]
first_val_logs = [parallel_validator(train_data, split_fn, train_func, eval_fn, n_jobs) for train_func in trainers]
logs = [[dict(log, **{"used_subsets": list(subset)}) for log, subset in zip(first_val_logs, used_subsets)]]
while not stop_fn(logs):
curr_log = first(logs)
new_subsets = selector_fn(curr_log)
new_features = [list(mapcat(lambda key: features_sets[key], subset)) for subset in new_subsets]
trainers = [lambda df: param_train_fn(df, feat) for feat in new_features]
val_logs = [parallel_validator(train_data, split_fn, train_func, eval_fn, n_jobs) for train_func in trainers]
new_logs = [dict(log, **{"used_subsets": subset}) for log, subset in zip(val_logs, new_subsets)]
if save_intermediary_fn is not None:
save_intermediary_fn(new_logs)
logs = [new_logs] + logs
return logs
def get_gifts(people):
# ``pipe(data, f, g, h)`` is equivalent to ``h(g(f(data)))`
return pipe(people,
filter(lambda v: v['age'] < 18 and v['well_behaved']),
mapcat(get(['name'])),
list)