def remove_value(self, shared, value):
self.count -= 1
self.sum -= int(value)
self.log_prod -= log(factorial(value))
def add_value(self, shared, value):
self.count += 1
self.sum += int(value)
self.log_prod += log(factorial(value))
def add_repeated_value(self, shared, value, count):
self.count += count
self.sum += int(count * value)
self.log_prod += count * log(factorial(value))
def score_value(self, shared, value):
post = shared.plus_group(self)
return gammaln(post.alpha + value) - gammaln(post.alpha) \
+ post.alpha * log(post.inv_beta) \
- (post.alpha + value) * log(1. + post.inv_beta) \
- log(factorial(value))
def remove_value(self, shared, value):
self.count -= 1
self.sum -= int(value)
self.log_prod -= log(factorial(value))
def add_repeated_value(self, shared, value, count):
self.count += count
self.sum += int(count * value)
self.log_prod += count * log(factorial(value))
def add_value(self, shared, value):
self.count += 1
self.sum += int(value)
self.log_prod += log(factorial(value))
def score_value(self, shared, value):
post = shared.plus_group(self)
return gammaln(post.alpha + value) - gammaln(post.alpha) \
+ post.alpha * log(post.inv_beta) \
- (post.alpha + value) * log(1. + post.inv_beta) \
- log(factorial(value))
