Criminal law is divided into two general categories. Substantive criminal law is concerned with the declaration of conduct that is prohibited and the calendar of associated penalties. Procedural law regulates the conduct of authorities during the investigative and trial phase of proceedings. The law of criminal procedure is divided into three broad phases: pre-trial, trial and sentencing. Each phase is governed by important policy concerns relating to due process, the right to silence, the liberty of the individual, privacy and equal treatment. Some of these policy concerns will be discussed throughout this chapter. This chapter provides a overview of some of the important aspects of criminal procedure, but readers are encouraged to consult specialists reference texts in their own jurisdiction for detail.We begin this chapter by considering the nature of summary offences, before turning to explore the concept of public peace and its associated relationship with procedure and powers. We then consider the major categories of summary offences relating to public order, before concluding with traffic offences.

The right to property is often classified as a human right demonstrating the fundamental importance attached to the concept of owning property; ‘everyone has the right to own property alone as well as in association with others [and] no one shall be arbitrarily deprived of his property.’ In this chapter, we examine the wide-ranging legal framework that gives effect to this right. In broad terms, at the state level, the framework is primarily concerned with protecting individual property rights through offences such as theft, obtaining property by deception, robbery and burglary. At the Commonwealth level, the framework is concerned with protecting Commonwealth property as well as ensuring that Australia’s obligations pursuant to international treaties are fulfilled. The property offences framework in Australian jurisdictions has been subject to consistent, ongoing reform partly motivated by the challenge of adapting existing offences to new forms of offending.

Trespass is a very old tort that can be used to address wrongs to the person of the plaintiff and also wrongs to the property of the plaintiff. This chapter deals only with trespass to the person, which arises in the case of forcible, direct and immediate injury to the person of the plaintiff.The tort of trespass reflected the interests of the law to maintain peace. Trespass to the person could be used where the plaintiff’s interest in their person – their bodily autonomy, freedom of movement and freedom from apprehension of unlawful touching – has been injured. Unlike the later tort of ‘trespass on the case’ (or ‘case’), which evolved into the tort of negligence, trespass to the person dealt with direct interference. The distinction between ‘direct’ and ‘consequential’ actions can be difficult to draw, as can been seen by the dissent of Blackstone J in Scott v Shepherd. As we will see, even though trespass and case/negligence are two discrete causes of action, the same facts may give rise to liability in both torts.

This chapter takes a relatively broad approach to defences, covering a range of factors that might serve to exculpate a defendant who might otherwise appear to have committed an offence. The defences examined here are arranged into two, imperfectly realised, categories. The first group have been termed ‘mental state defences’ and the second ‘self-help defences’. The group titled ‘mental state defences’ are so categorised because they depend to a greater or lesser extent on the contention that the accused did not possess the requisite mens rea to commit the offence. In assessing whether an accused may be able to rely on a defence a number of subjective and objective elements have to be applied and analysed. It is important to understand that the considerations informing the development of each of the defences are often very different and sometimes controversial. The groupings are far from perfectly realised and the rationales and doctrines of each of the defences may manifest as many dissimilarities as they do similarities. It is hoped that the arrangement of the material in this chapter will aid understanding by drawing comparisons across different aspects of the criminal law.

The crimes of murder and manslaughter as well as any statutorily created offences involving the death of a person, such as dangerous driving causing death or assaults causing death are homicides in the sense of unlawful killings. Homicides may, however, be lawful insofar as being justified by, for example, self-defence or acting in the defence of another person; or being excused as a result of duress. They may be the consequence of an accident or an accused may not be criminally responsible because they suffer from a mental illness.This chapter will explore and analyse the crimes of murder, manslaughter and various statutory crimes involving particular types of conduct which cause the death of another person, including assaults, driving vehicles and administering drugs or other acts to hasten death. Murder is the most serious form of unlawful homicide and, with culpability rooted largely in the intentional nature of the killing, it attracts severe punishment up to a maximum of imprisonment for life. This penalty may be mandatory and may mean for the term of the offender’s natural life in some jurisdictions or in specific circumstances.

10.1 Support Vector Machines

Support vector machines (SVMs) are supervised machine learning (ML) models used to solve regression and classification problems. However, it is widely used for solving classification problems. The main goal of SVM is to segregate the n-dimensional space into labels or classes by defining a decision boundary or hyperplanes. In this chapter, we shall explore SVM for solving classification problems.

10.1.1 SVM Working Principle

SVM Working Principle | Parteek Bhatia, https://youtu.be/UhzBKrIKPyE

To understand the working principle of the SVM classifier, we will take a standard ML problem where we want a machine to distinguish between a peach and an apple based on their size and color.

Let us suppose the size of the fruit is represented on the X-axis and the color of the fruit is on the Y-axis. The distribution of the dataset of apple and peach is shown in Figure 10.1.

To classify it, we must provide the machine with some sample stock of fruits and label each of the fruits in the stock as an “apple” or “peach”. For example, we have a labeled dataset of some 100 fruits with corresponding labels, i.e., “apple” or “peach”. When this data is fed into a machine, it will analyze these fruits and train itself. Once the training is completed, if some new fruit comes into the stock, the machine will classify whether it is an “apple” or a “peach”.

Most of the traditional ML algorithms would learn by observing the perfect apples and perfect peaches in the stock, i.e., they will train themselves by observing the ideal apples of stock (apples which are very much like apples in terms of their size and color) and the perfect peaches of stock (peaches which are very much like peaches in terms of their size and color). These standard samples are likely to be found in the heart of stock. The heart of the stock is shown in Figure 10.2.

The present chapter discusses the linguistic representation of, and reference to, individuals. Individuals were introduced in Chapters 2 and 3 as particulars – entities individuated by time and space – alongside events. The overarching question guiding this chapter is how to study the domain of reference to individuals in particular languages. The mention of particular languages in this formulation targets language documentation, description, and typology. However, I believe that the methods and tools discussed in this chapter will also be of use to students of child language, psycholinguists, and researchers engaging in corpus-based studies. The discussion begins by examining the types of concepts that populate the nominal domain (Sections 8.1–8.3). It then pivots to surveying the role of reference to individuals in the grammars of languages (Sections 8.4 and 8.5) and crosslinguistic variation in the lexicalization of the domain (Section 8.6) and concludes with a review of tools and methods for the exploration of the nominal domain (Section 8.7).