python - Calculating cosine distance between the rows of matrix -


i'm trying calculate cosine distance in python between rows in matrix , have couple questions.so i'm creating matrix matr , populating lists, reshaping analysis purposes:

s = []  in range(len(a)):     j in range(len(b_list)):         s.append(a[i].count(b_list[j]))  matr = np.array(s)  d = matr.reshape((22, 254))

the output of d gives me smth like:

array([[0, 0, 0, ..., 0, 0, 0],        [2, 0, 0, ..., 1, 0, 0],        [2, 0, 0, ..., 0, 0, 0],        ...,         [0, 0, 0, ..., 0, 0, 0],        [0, 0, 0, ..., 0, 0, 0],        [1, 0, 0, ..., 0, 0, 0]])

then want use scipy.spatial.distance.cosine package calculate cosine first row every other else in d matrix. how can perform that? should loop that? not experience matrix , array operations.

so how can use loop second argument (d[1],d[2], , on) in construction not launch every time:

from scipy.spatial.distance import cosine x=cosine (d[0], d[6])

you can use simple loop scipy.spatial.distance.cosine:

dists = [] row in matr:     dists.append(scipy.spatial.distance.cosine(matr[0,:], row))

Comments

Post a Comment

Popular posts from this blog

jOOQ update returning clause with Oracle -

according http://www.jooq.org/doc/3.8/manual/sql-building/sql-statements/update-statement/ jooq doesn't support returning clause in update statements databases except firebird , postgres. does know, still correct oracle jooq? according oracle's documentation, oracle db supports returning clase delete, insert, or update statements. incorrect manual you're right - manual wrong , should fixed: https://github.com/jooq/jooq/issues/5470 single row update returning jooq 3.8 added support single row update .. returning statements. internally, uses callablestatement , pl/sql block of form: begin update "my_table" set "my_table"."column" = 'xyz' "my_table"."id" = 1 returning "my_table"."id", "my_table"."column" ?, ?; ? := sql%rowcount; end; the relevant issue is: https://github.com/jooq/jooq/issues/5190 multi row update returning a...
Read more

java - Warning equals/hashCode on @Data annotation lombok with inheritance -

i have entity inherits other. on other hand, i'm using lombok project reduce boilerplate code, put @data annotation. annotation @data inheritance produces next warning: generating equals/hashcode implementation without call superclass, though class not extend java.lang.object. if intentional, add '@equalsandhashcode(callsuper=false)' type. is advisable add annotation @equalsandhashcode (callsuper = true) or @equalsandhashcode (callsuper = false) ? if not added, 1 callsuper=false or callsuper=true ? the default value false . 1 if don't specify , ignore warning. yes, recommended add @equalsandhashcode annotation on @data annotated classes extend else object. cannot tell if need true or false , depends on class hierarchy, , need examined on case-by-case basis. however, project or package, can configure in lombok.config call super methods if not direct subclass of object. lombok.equalsandhashcode.callsuper = call for configuration system ...
Read more

java - BasicPathUsageException: Cannot join to attribute of basic type -

i using java 8 jpa (hibernate 5.2.1). have clause works perfectly, until introduce clause make use foreign key table values too. i getting following error: basicpathusageexception: cannot join attribute of basic type i think problem related fact have join table, , not sure how create join using join table. employee - employee_category - category model (employee.java): @manytomany(cascade = cascadetype.all, fetch=fetchtype.eager) @jointable ( name="employee_category", joincolumns={ @joincolumn(name="emp_id", referencedcolumnname="id") }, inversejoincolumns={ @joincolumn(name="cat_id", referencedcolumnname="id") } ) private set<category> categories; model (category.java): @id private string id; jpa when introduce following code, fails error above (i think problem new piece of code): join<t, category> category = from.join("id"); predicates.add(criteriabuilder.like(category....
Read more