• Collocation Checker

    The collocation checker is designed to help learners correct inadequate V+N collocation usages. We aim to help language learners gain awareness of collocation usages and internalize this knowledge in their future learning.

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  • Clozer

    Clozer, is an online testing system that can automatically generate test item for collocations. Learners, who master collocation usages, are expected to choose the right collocation fitting in the context without being misled by the other distracting choices.

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  • Collocation Insepctor

    Collocation Inspector is now released as a beta version. This system aims at providing writing assistantship in academic writing. We will let users polish their writing through our contextual style collocation suggestor.

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Hurray! After a long while, we finally release our first beta version!

The new system will now accept user's fulltext input and suggest the collocation usages in a contextual-spelling-checker style. We hope this could be more intuitive and user-friendly design than the previous version. Moreover, this time we not only provide correction suggestions but also alternative suggestions (shown in red and green respectively). Don't forget to try it out and give us your comment and feedback!


The function of checking miscollocation in the writing has been requested long by learners over years. The first version was released a few years ago. At that time, we implemented our system on the .NET platform using VisulBasic. The result was great but the speed was barely acceptable. This time we rewrite the whole system in Python and develop the website on Django framework. Moreover, we take the feedback from learners into consideration and redesign the interface.

(previous version)

(New version)

To have more interaction with learners, we not only enable users to input their queries to check collocation usages but also interact with users through the "Collocation Game". User can guess and choose the suspicious usage from the rotated flash cards and click one of them as a query for further details. We wish this design can make the learners more familiar with our system as well as more aware of collocation knowledge from common errors.



It is here!

We are glad to announce this website for people who are interested in improving their English writing. We would love to provide more services as well as information concerning how to improve learners' writing later. Currently, this website is still under construction though. If you are interested in what kind of service is provided here, please refer to the tab above "Demo" for a glimpse or link to http://miscollocation.appspot.com to see how it works. Enjoy it and do not hesitate to give us your feedback!