update.top2vec

Update a Top2vec model by updating the UMAP dimension reduction together with the HDBSCAN clustering
or update only the HDBSCAN clustering

Learn vector representations of sentences, paragraphs or documents by using the 'Paragraph Vector' algorithms,
namely the distributed bag of words ('PV-DBOW') and the distributed memory ('PV-DM') model.
The techniques in the package are detailed in the paper "Distributed Representations of Sentences and Documents" by Mikolov et al. (2014), available at <doi:10.48550/arXiv.1405.4053>.
The package also provides an implementation to cluster documents based on these embedding using a technique called top2vec.
Top2vec finds clusters in text documents by combining techniques to embed documents and words and density-based clustering.
It does this by embedding documents in the semantic space as defined by the 'doc2vec' algorithm. Next it maps
these document embeddings to a lower-dimensional space using the 'Uniform Manifold Approximation and Projection' (UMAP) clustering algorithm
and finds dense areas in that space using a 'Hierarchical Density-Based Clustering' technique (HDBSCAN). These dense
areas are the topic clusters which can be represented by the corresponding topic vector which is an aggregate of the
document embeddings of the documents which are part of that topic cluster. In the same semantic space similar words can
be found which are representative of the topic.
More details can be found in the paper 'Top2Vec: Distributed Representations of Topics' by D. Angelov available at <doi:10.48550/arXiv.2008.09470>.

Jan Wijffels

doc2vec

Distributed Representations of Sentences, Documents and Topics

BNOSAC 

hiyijian 

update.top2vec function

<dl><dt>object</dt>
<dd>an object of class <code>top2vec</code> as returned by <code>top2vec</code></dd>
<dt>type</dt>
<dd>a character string indicating what to udpate. Either 'umap' or 'hdbscan' where the former (type = 'umap') indicates to 
update the umap as well as the hdbscan procedure and the latter (type = 'hdbscan') indicates to update only the hdbscan step.</dd>
<dt>umap</dt>
<dd>see <code>umap</code> argument in <code>top2vec</code></dd>
<dt>trace</dt>
<dd>logical indicating to print evolution of the algorithm</dd>
<dt>...</dt>
<dd>further arguments either passed on to <code>hdbscan</code> in case type is 'hdbscan' or to <code>umap</code>
in case type is 'umap'</dd></dl>

Arguments

Update a Top2vec model — update.top2vec

<dl>

<dt>object</dt>
<dd>an object of class <code>top2vec</code> as returned by <code>top2vec</code></dd>


<dt>type</dt>
<dd>a character string indicating what to udpate. Either 'umap' or 'hdbscan' where the former (type = 'umap') indicates to 
update the umap as well as the hdbscan procedure and the latter (type = 'hdbscan') indicates to update only the hdbscan step.</dd>


<dt>umap</dt>
<dd>see <code>umap</code> argument in <code>top2vec</code></dd>


<dt>trace</dt>
<dd>logical indicating to print evolution of the algorithm</dd>


<dt>...</dt>
<dd>further arguments either passed on to <code>hdbscan</code> in case type is 'hdbscan' or to <code>umap</code>
in case type is 'umap'</dd>

</dl>

update.top2vec: Update a Top2vec model

Description

Usage

Value

Arguments

Examples