Training machine learning models often requires large labelled datasets, which can be both expensive and time-consuming to obtain. Active learning aims to selectively choose which data is labelled in order to minimize the total number of labels required to train an effective model. This paper compares model-free and model-based approaches to active learning for regression, finding that model-fr...

Much of what we learn comes from a mix of information that we select (active learning) and information that we receive (passive learning). But what type of learning is best for different kinds of learning problems? In the current work, we explore this question by comparing different sequences of active/passive training in an abstract concept learning task. First, we replicate the active learnin...

In many practical applications of active learning, it is more cost-effective to request labels in large batches, rather than one-at-a-time. This is because the cost of labeling a large batch of examples at once is often sublinear in the number of examples in the batch. In this work, we study the label complexity of active learning algorithms that request labels in a given number of batches, as ...

Discovering rare categories and classifying new instances of them is an important data mining issue in many fields, but fully supervised learning of a rare class classifier is prohibitively costly. There has therefore been increasing interest both in active discovery: to identify new classes quickly, and active learning: to train classifiers with minimal supervision. Very few studies have attem...

Introduction: Learning and memory deficits in some diseases are new subjects of research. Bupropion, as dopamine and noradrenaline reuptake inhibitor and an antidepressant agent, has been previously shown to affect learning and memory processes. This study was designed to test the effect of intra-hippocompal bupropion injection on active avoidance learning task in rats. Methods: Adult male ...

There are several conflicting evidences showing the effect of morphine on learning and memory processes. In the present study the effect of chronic morphine administration on passive avoidance, active avoidance and spatial learning and memory of morphine dependent male rats using Passive Avoidance shuttle box and Morris Water Maze tasks were investigated, respectively. Male rats received morphi...

this research aimed to investigate the learning organization characteristics in environmental non-governmental organizations (engos) in tehran city using the watkins and marsick’s seven dimensional learning organization model. the research method was descriptive- correlation and used survey method. the population consisted of all active members on engos in tehran city.  using bartlett’s (2011) ...

individuals act differently in learning, this being due to the difference in learning styles of persons. learning styles affect optimum learning and the efficiency in educational output. therefore an identification of the learning styles of learners as related to teaching and learning activities is most important. the purpose of this study was to investigate the learning styles of agricultural ...