FAQs

What is the digital copy I get with my Print order?

When you buy any Print edition of our Books, you can redeem (for free) the eBook edition of the Print Book you’ve purchased. This gives you instant access to your book when you make an order via PDF, EPUB or our online Reader experience.

What is the delivery time and cost of print book?

Shipping Details

USA:

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.

Unfortunately, due to several restrictions, we are unable to ship to the following countries:

Afghanistan
American Samoa
Belarus
Brunei Darussalam
Central African Republic
The Democratic Republic of Congo
Eritrea
Guinea-bissau
Iran
Lebanon
Libiya Arab Jamahriya
Somalia
Sudan
Russian Federation
Syrian Arab Republic
Ukraine
Venezuela

What is custom duty/charge?

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order?

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges?

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.

How can I cancel my order?

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact customercare@packt.com with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at customercare@packt.com using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy?

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on customercare@packt.com with the order number and issue details as explained below:

If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on customercare@packt.com within one hour of placing the order and we will replace/refund you the item cost.
Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on customercare@packt.com who will be able to resolve this issue for you.
You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on customercare@packt.com within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged?

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use?

You can pay with the following card types:

Visa Debit
Visa Credit
MasterCard
PayPal

What is the delivery time and cost of print books?

Shipping Details

USA:

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Unfortunately, due to several restrictions, we are unable to ship to the following countries:

Afghanistan
American Samoa
Belarus
Brunei Darussalam
Central African Republic
The Democratic Republic of Congo
Eritrea
Guinea-bissau
Iran
Lebanon
Libiya Arab Jamahriya
Somalia
Sudan
Russian Federation
Syrian Arab Republic
Ukraine
Venezuela

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Amazon verified reviews

N/A Feb 13, 2024

Libro che unisce i modelli di ottimizzazione (con una buona base teorica) al Quantum Computing. Valido.

Feefo Verified review

Tiny May 11, 2023

Wow, just wow, a great book providing invaluable data. For those seeking any reference to convert quantum equations into code, test classically, and then run on a quantum computer, this is the book. “A Practical Guide to Quantum Machine Learning and Quantum Optimization” (Packt, 2023) by Elias Combarro and Samuel Gozalez-Castillo more than lives up to the promise. For each chapter, the book provides the quantum theory, and then the practical application, supplemented with in-step exercises to keep up with the material. If your math skills are a little weak, don’t worry, the full set of appendices provides quick references to get up to speed. The book appears in three relevant sections, an intro to quantum circuits, deeply analyzing practical quantum algorithms, and integrating quantum computing into machine learning tools. This is a must-read for anyone with even a partial interest in quantum computing and a must-have desk reference for those actively involved in this exciting field.The first section is relatively brief, and if you are familiar with quantum computing, you can probably skipthese two chapters. However, it provides an excellent history of quantum, an introduction to using quantum circuits, and the tools provided during the book. This section relates to Appendix D, describing how to install and use the various tools required. This starts the integration between the appendices as background and the details throughout the book. The section finishes by discussing the various IDE options for writing quantum code and where that code can actually be run across quantum computers. One missing element was it does not discuss the options to use AWS Braket which I mentioned in a previous review. Section two is the meat of the book and the real brain challenge. The authors look at five different quantum algorithms (Quadratic Unconstrained Binary Operators (QUBO), Adiabatic Quantum Computing, Quantum Approximate Optimization Algorithm (QAOA), Grover Adaptive Search (GAS), and the Variational Quantum Eigensolver). If those names left you a little behind, don’t worry. Each chapter starts with the explanation and theory behind the algorithm, use-cases, and then moves into the coding approach. Each chapter takes a detailed look at either Qiskit or Pennylane, depending on which works best, and then moves to describe that one thoroughly. The other option receives a brief explanation but is sufficient to start. An important reminder for this mid-section is the concept of NP problems where N is a number, and P is polynomial time. This presents NP as the class of problems for which exists a polynomial time verifier and one of the largest open quantum problems proving that P is not equal to NP. Moving on, NP-hard problems occur if every problem in NP is poly-time reducible. NP-complete occurs where every problem is present in NP and every problem is reducible to it. These definitions occur repeatedly throughout the book. One other important consideration is how quantum can help accelerate some problems, for example, in the GAS theorem, to find data satisfying specific conditions in unsorted data, a classical computer requires a minimum of N/2 operations while quantum computing requires √N operations, a massive decrease. The third section then converts those algorithms into practical ML applications. It begins with a review of how to establish ML processes and the changes to be expected. The biggest challenge is first converting classical data into quantum-relevant terms and then measuring them at the end. After working through Vector Support Machines and neural networks, the chapter on Generative Adversarial Networks(GAN) is great. The GAN process is where one sets an initial machine to review data and produce new data similar to what it has learned. The discriminator then uses the original dataset to determine if the new data is sufficient. Multiple competing algorithms, how could you ask for anything more? The one drawback to the book is it is primarily a reference rather than a true guide. It highlights all the required material to be able to function in a quantum computing space but does not show you what you should be looking for with your particular use case. This is a strength and a shortcoming. As a reference, this is key material to make sure the solutions you implement are appropriate or to help discriminate once you have a problem. If you don’t know what you want to do with quantum computing, this may not help you get there but that definitely does not undermine the book’s value. Overall, “A Practical Guide to Quantum Machine Learning and Quantum Optimization” (Packt, 2023) by Elias Combarro and Samuel Gozalez-Castillo is one of the best I’ve read recently on this challenging field. It presents all the required detail, and if not always easy to understand, the appendices rapidly bring you up to speed. I recommend the e-version as searching to connect the terms between chapters was frequently helpful as well. Each chapter also presents a set of exercises to make sure one can follow along accurately. The code samples are convenient, and always included with outputs, and jumping between different providers helps ensure you understand the process and not just the particular implementation. I recommend to anyone with even a passing interest in quantum computing and as a key desk reference for those who deal with these issues on a daily basis. A must-read.

Amazon Verified review

Aadi May 01, 2023

What sets this book apart is its emphasis on practical applications. The authors provide numerous examples and code snippets to demonstrate how quantum algorithms can be used to solve real-world problems. They also discuss the current limitations of quantum computing and offer guidance on how to overcome these limitations.The writing is clear and concise, making the material accessible to both beginners and experts. The book is well-organized, with each chapter building upon the previous one, and the authors do an excellent job summarizing the key takeaways at the end of each chapter.

Gauri Jul 05, 2023

This book offers an in-depth understanding of concepts related to ML, Quantum Computing, and Optimization. As a prior graduate student myself, I found the information related to QC frameworks and quantum gates useful as it explains the working principles of different models related to these concepts.

Good Jan 20, 2024

I didnt study yet , i have to study

A Practical Guide to Quantum Machine Learning and Quantum Optimization: Hands-on Approach to Modern Quantum Algorithms

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