Language is a social phenomenon and variation is inherent to its social nature. Recently, there has been a surge of interest within the computational linguistics (CL) community in the social dimension of language. In this article we present a survey of the emerging field of 'Computational Sociolinguistics' that reflects this increased interest. We aim to provide a comprehensive overview of CL research on sociolinguistic themes, featuring topics such as the relation between language and social identity, language use in social interaction and multilingual communication. Moreover, we demonstrate the potential for synergy between the research communities involved, by showing how the large-scale data-driven methods that are widely used in CL can complement existing sociolinguistic studies, and how sociolinguistics can inform and challenge the methods and assumptions employed in CL studies. We hope to convey the possible benefits of a closer collaboration between the two communities and conclude with a discussion of open challenges.

Turkish as spoken in the Netherlands (NL-Turkish) sounds “different” (unconventional) to Turkish speakers in Turkey (TR-Turkish). We claim that this is due to structural contact-induced change that is, however, located within specific lexically complex units copied from Dutch. This article investigates structural change in NL-Turkish through analyses of spoken corpora collected in the bilingual Turkish community in the Netherlands and in a monolingual community in Turkey. The analyses reveal that at the current stage of contact, NL-Turkish is not copying Dutch syntax as such, but rather translates lexically complex individual units into Turkish. Perceived semantic equivalence between Dutch units and their Turkish equivalents plays a crucial role in this translation process. Counter to expectations, the TR-Turkish data also contained unconventional units, though they differed in type, and were much less frequent than those in NL-Turkish. We conclude that synchronic variation in individual NL-Turkish units can contain the seeds of future syntactic change, which will only be visible after an increase in the type and token frequency of the changing units.

Immigrant communities host multilingual speakers who switch across languages and cultures in their daily communication practices. Although there are in-depth linguistic descriptions of code-switching across different multilingual communication settings, there is a need for automatic prediction of code-switching in large datasets. We use emoticons and multi-word expressions as novel features to predict code-switching in a large online discussion forum for the Turkish-Dutch immigrant community in the Netherlands. Our results indicate that multi-word expressions are powerful features to predict code-switching.

Contact between languages usually leads to linguistic changes. Both social and structural factors are claimed to influence this process. This study analyzes word order in Turkish as spoken in the Netherlands (NL-Turkish). Turkish is an OV language but also allows other word order patterns (including VO) in certain pragmatic contexts. Dutch, on the other hand, is VO in main clauses. Due to contact, Turkish may be expected to increase its use of VO. From a comparison with Turkish as spoken in Turkey (TR-Turkish), it appeared that there is no increase of VO in NL-Turkish. However, we did find some deviations in the information structure characteristics of VO structures and sometimes these seem to be due to Dutch influence. On the other hand, TR-Turkish data also contained certain types of VO structures that further caution against hasty contact conclusions. We conclude that contact situations need to be intense for sweeping syntactic change to occur, and that such change starts with changes in individual semilexical constructions.