  The concept of Web of Things (WoT) merges web technologies with knowledge
graphs in the context of Internet of Things. Given its widespread adoption in
representing and exchanging structured data online, JSON-LD could be an
effective format for WoT. Nevertheless, its verbose nature may present
challenges for resource-constrained IoT devices with limited bandwidth and
memory capacities.
  In this paper, we present a novel approach to compactly represent JSON-LD
data using the Concise Binary Object Representation (CBOR) and bitmaps. Our
proposed method is named as CBL which stands for CBOR, Bitmap and List of
Key-value pairs. CBL leverages the ideas from CBOR and HDT to achieve an
efficient encoding of JSON-LD data.
  Results demonstrate that our approach provides savings up to 95.1% in terms
of network overhead. This could be especially beneficial for IoT devices
exchanging data over wireless networks. Moreover, our approach is more
efficient than the current approach known as CBOR-LD, which is used to compact
JSON-LD data.
