蘋果的虛擬個人助手Siri十分受歡迎。但一份最新報告顯示，與去年相比，Siri系統受歡迎的程度有所下降。

Verto Analytics是一家進行手機軟件測量的公司，根據該公司周二公布的最新數據，2016年5月至2017年5月期間，Siri流失了730萬名用戶，約占其美國用戶總數的15%。Verto Analytics公司在公開文件中稱，甚至連那些正在使用Siri的用戶也在慢慢冷落這一軟件，使用頻率比過去低了許多。

不過，對于蘋果來說有一個好消息。那就是Siri仍然是美國最受歡迎的虛擬助手，排名超過了亞馬遜的Alexa、微軟的Cortana以及其他安卓系統中的虛擬助手。在美國，Siri擁有4140萬位獨立用戶。而在2016年5月這一數字為4870萬。

虛擬個人助手已迅速成為智能手機市場和智能家居市場的重要組成部分。用戶可以向虛擬助手發出語音指令來創建新的日程安排、設定鬧鐘或是在互聯網上搜索。從智能手機到像亞馬遜Echo這樣的智能家居系統，都是由虛擬助手來運行所有指令。

在美國，iPhone用戶群體十分龐大，所以，蘋果Siri正在引領這一行業的發展這一說法并不令人感到驚奇。這款虛擬助手與所有蘋果設備都可配套使用，包括iPhone、iPad和mac電腦。

就在蘋果Siri的用戶數正在減少時，亞馬遜Alexa的用戶數卻在飆升。Alexa這款虛擬助手運行于亞馬遜Echo這類智能家居系統中。2016年5月，它在美國有80萬用戶，2017年5月底這個數字已經增長到260萬。此外，Alexa的用戶十分依賴這一服務，且使用次數比去年更為頻繁。

Verto Analytics公司稱，其它大多數虛擬助手的使用量也在上升，這在很大程度上是由于安卓用戶人數在不斷增長。但研究人員并沒有給出Siri使用率下降的確切原因。（財富中文網）??

譯者：Amelia Huang

Apple's virtual personal assistant Siri is popular, but not nearly as popular as it was last year, according to a new report.

Between the period of May 2016 and May 2017, Siri lost 7.3 million monthly users, or about 15% of its total U.S. user base, according to new data released on Tuesday by app-measurement company Verto Analytics. Even those that are still using Siri have cooled to the app, and are now using it less often than they had in the past, Verto said in a statement.

Still, it's not all bad news for Apple: Siri is still the most popular virtual assistant in the U.S., topping Amazon's Alexa, Microsoft's Cortana, and various other Android-based assistants. Apple 's Siri has 41.4 million monthly unique users in the U.S. It had 48.7 million unique users in May 2016.

Virtual personal assistants have quickly become critical components in both the mobile and smart home markets. The services allow users to issue voice commands to their respective assistants to create calendar appointments, set timers, and search the Web. The assistants run on everything from smartphones to smart home hubs like Amazon's Echo.

With such a large iPhone user base in the U.S., it's perhaps no surprise Apple's Siri is leading the way. The virtual assistant comes bundled with every Apple device, including the iPhone, iPad, and Macs.

While Apple's Siri usage is on the decline, Amazon's Alexa is soaring. The virtual assistant, which runs on smart home devices like the Amazon Echo, had 800,000 U.S. users in May 2016. At the end of May 2017, its user base had grown to 2.6 million. Additionally, Alexa users are proving to be more "sticky" and using the service far more often now than they did last year.

Most other virtual assistants are also seeing their usage climb, due in large part to the number of Android users growing, according to Verto. The researcher didn't say exactly why Siri's usage has declined.