Chapter

The Role of Push Notifications

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Abstract

Mobile apps market is a growing market and the main technological enabler of apps are push notifications (PN). Today, users are currently receiving a daily average of 63 PN. After an introduction that highlights the relevance of PN, this chapter covers the background of its topic –pop-up messages that emerge on the smartphone screen- and its characterization: (1) proactive communication with the user; (2) explicitly authorized through an opt-in request; (3) wide range of content, private and social, sent by social networks, commercial companies, or news publishers from apps or web site; (4) targeted according to the users’ interests, previous behaviors, or time of day; (6) always prompting the user to click on the PN that will land on the sender’s app / web site. There is a steep competition for the user's attention to click through the PN message. Thus the chapter moves through to discuss the factors that influence the choice of whether to open or ignore a PN: (1) Timing in the delivery, disruption, and systems for managing PN in a non-disruptive way. (2) Top-down factors in PN usage, such as user profile, user reaction times, and user interest in the content (3) Bottom-up factors, such as message textual and visual features as an antecedent of click-through rate. Before concluding, the chapter suggests future directions for researchers and practitioners: how to increase opt-in rates, user experience of PN, reasons to opt-out … The chapter ends with a conclusion and a list of references.

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Customer churn is a widely known term in many industries, including banking, telecommunications and gaming. By definition, churn represents the act of a customer leaving a product for good. Most commonly, late customer churn is addressed. In the dynamics of free to play games, most of newly registered users abandon the game in the first few days, so the main focus is on early customer churn. Therefore, successful early churn prevention methodology is vital to having a successful business in free to play gaming industry. To tackle this problem, we introduce a two stage intelligent system. It employs early churn prediction, formulated as a binary classification task, followed by a churn prevention technique using personalized push notifications. For early churn prediction, common machine learning models are trained and compared using a data set obtained from two million players of Top Eleven - Be A Football Manager online mobile game. To prevent churn, we track user activity, identify the game features that are potentially interesting to the user and then use that data to tailor personalized push notifications with a purpose to attract users back into the game. Using this approach, we are able to reduce churn up to 28%, which, at the scale of millions of users, represents a significant positive impact to business.
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Conference Paper
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Conference Paper
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Conference Paper
There is a prevailing sentiment in popular culture that we have become too attached to our phones. Smartphone notifications play a critical role in drawing people's attention to their phones. As user experience researchers on the Android team at Google, we used an ethnographic approach to understand how people experience smartphone notifications. We conducted an ethnographic study of smartphone users in New York City, while engaging members of our product team (including product managers, engineers, and designers) in the data collection and analysis. In this case study, we describe our research methods, what we learned about notifications' role in people's lives, and discuss the impact that our research has had on various product teams at Google.
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Conference Paper
Notifications on smartphones are ubiquitous; they are providing a broad range of information, from rather technical (e.g. app updates) to interpersonal (e.g. a message from a friend). The disruptive nature poses the challenge of finding opportune moments for delivery of notifications, and receptivity to notifications depends on various factors that include perceived urgency and time of delivery. This paper presents a case study with 126 000 participants investigating the effect of the factor time on receptivity to notifications on smartphones in the context of an advertising service. Results show significant differences for weekdays and time of day regarding response times and number of notification-triggered application launches. We conclude with a discussion on the key findings and propose design implications for push notification campaigns.
Conference Paper
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Conference Paper
Smartphones have become an indispensable part of everyday life. By this time, push notifications are at the core of many apps, proactively pushing new content to users. These notifications may raise awareness, but also have the downside of being disruptive. In this paper we present a laboratory study investigating users' attitudes towards notifications and how they deal with notification settings on their smartphones. Permission requests for sending push notifications on iOS don't inform the user about the nature of notifications of this app, leaving the user to make a rather uninformed choice on whether to accept or deny. We show that requests including explanations are significantly more likely to be accepted. Our results further indicate that apart from being disruptive, notifications may create stress due to information overload. Notification settings, once assigned a preset, are rarely changed, although not necessarily matching the favored one.
Conference Paper
In this paper we describe the results of a survey amongst smartphone owners into the use and perception of mobile notifications against 160 parameters. We conclude that not all notifications should be created or treated equally by mobile operating systems. The current generation of notifications proves not diverse enough and doesn’t fit the needs and preferences of most smartphone users. Based on our findings, we offer a framework of design guidelines for more effectively engaging users with interactions initiated by the system.
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This is why you should read this article. Although such an opening statement does not make much sense read in isolation, journalists often write headlines like this on news websites. They use the forward-referring technique as a stylistic and narrative luring device trying to induce anticipation and curiosity so the readers click (or tap on) the headline and read on. In this article, we map the use of forward-referring headlines in online news journalism by conducting an analysis of 100,000 headlines from 10 different Danish news websites. The results show that commercialization and tabloidization seem to lead to a recurrent use of forward-reference in Danish online news headlines. In addition, the article contributes to reference theory by expanding previous models on phoricity to include multimodal references on the web.
Conference Paper
Notification service is a popular functionality provided by almost all modern smartphone platforms. To facilitate customization for developers, many smartphone platforms support highly customizable notifications, which allow the third party applications to specify the trigger events, the notification views to be displayed, and the allowed user operations on the notification views. In this paper, we show that notification customization may allow an installed trojan application to launch phishing attacks or anonymously post spam notifications. Through our studies on four major smartphone platforms, we show that both Android and BlackBerry OS are vulnerable under the phishing and spam notification attacks. iOS and Windows Phone allow little notification customization, thus launching the phishing and spam attacks will expose the identity of the trojan application. Attack demonstrations on all platforms are presented. To prevent the phishing and spam notification attacks while still allowing notification customization, we propose a Semi-OS-Controlled notification view design principle and a Notification Logging service. Moreover, to protect applications from fraudulent views, we propose a view authentication framework, named SecureView, which enables the third party applications to add the authentication image and text to their sensitive views (e.g. the account login view). The implementation and demonstrations of proposed defense approaches on Android are also presented in the paper.
Conference Paper
Most of existing e-commerce recommender systems aim to recommend the right product to a user, based on whether the user is likely to purchase or like a product. On the other hand, the effectiveness of recommendations also depends on the time of the recommendation. Let us take a user who just purchased a laptop as an example. She may purchase a replacement battery in 2 years (assuming that the laptop's original battery often fails to work around that time) and purchase a new laptop in another 2 years. In this case, it is not a good idea to recommend a new laptop or a replacement battery right after the user purchased the new laptop. It could hurt the user's satisfaction of the recommender system if she receives a potentially right product recommendation at the wrong time. We argue that a system should not only recommend the most relevant item, but also recommend at the right time. This paper studies the new problem: how to recommend the right product at the right time? We adapt the proportional hazards modeling approach in survival analysis to the recommendation research field and propose a new opportunity model to explicitly incorporate time in an e-commerce recommender system. The new model estimates the joint probability of a user making a follow-up purchase of a particular product at a particular time. This joint purchase probability can be leveraged by recommender systems in various scenarios, including the zero-query pull-based recommendation scenario (e.g. recommendation on an e-commerce web site) and a proactive push-based promotion scenario (e.g. email or text message based marketing). We evaluate the opportunity modeling approach with multiple metrics. Experimental results on a data collected by a real-world e-commerce website(shop.com) show that it can predict a user's follow-up purchase behavior at a particular time with descent accuracy. In addition, the opportunity model significantly improves the conversion rate in pull-based systems and the user satisfaction/utility in push-based systems.