NEWS

tall 1.0.0

Changelog:

New Analyses

SVO Triplets (Subject-Verb-Object)

New analysis for extracting subject-verb-object triplets from the dependency tree
C++ backend (extract_svo.cpp) for high performance
Dedicated UI under Documents with Run/Export/Report, results table, Info &
References, TALL AI
Exported R function: extract_svo_triplets()

Syntactic Complexity

New document-level syntactic complexity analysis based on dependency parsing
C++ backend (syntactic_complexity.cpp) for computing syntactic metrics
Dedicated UI under Documents with Run/Export/Report, results table, Info &
References, TALL AI
Exported R function: compute_syntactic_complexity()

Emotion Analysis (NRC EmoLex)

New emotion analysis based on the NRC Word-Emotion Association Lexicon
Detection of 8 emotions: anger, anticipation, disgust, fear, joy, sadness,
surprise, trust
Core functions: emotionAnalysis(), emotionBarChart(), emotionWordPlot(),
emotionHeatmap()
loadEmotionLexicon() for loading NRC data (English: mapped via Italian
lexicon’s English Word column)
Dedicated UI with 6 tabs: Emotion Distribution, Top Words by Emotion, Document Heatmap, Table, Info & References, TALL AI
PNG export and Excel report integrated
Gemini AI integration across all 5 switch points

Noun Phrase Extraction

Noun phrase extraction via dependency tree
C++ backend (extract_np.cpp)
Exported R function: extract_noun_phrases()

Topic Modeling (major enhancement)

CTM (Correlated Topic Model) and STM (Structural Topic Model) added as new methods
STM prevalence covariates with effect plots and regression coefficients
Model diagnostics tab: coherence, exclusivity, log-likelihood
Multi-metric comparison plot and consensus K recommendation
Estimated K automatically transferred to the model estimation panel

Image Export System (complete rewrite)

Rewrite of plot2png() with DPI-aware rendering (biblioshiny approach)
Graph export settings: export/report DPI, height, aspect ratio
Persistent settings, temporary file cleanup
JavaScript canvas capture for visNetwork

Homepage & References

Complete homepage redesign in biblioshiny style
Updated citation to the SoftwareX paper (Aria et al., 2026)
Added open-access paper and supplementary material links

Settings & UI

Added icons to all tab panels across the app
Added colored boxes next to hex color codes in Thematic Map tables
Fixed Reinert/CA dendrogram “Words in Context” error (uninitialized variable)
Fixed Import tab: table disappearing after Remove, “Back to original text”, dfTag sync
Fixed Topic Modeling estimation error without options and conditional arrow buttons
Fixed report items overlapping with box title
Fixed Similarity page margins and Embedding distribution spacing
Fixed Supervised Classification header formatting
Moved Info & References to last tab in Thematic Map and Similarity
Removed “in TALL” from all Info & References section titles
Updated KWIC Info styling and added Dependency reference in Word Network info
Added morphological features stats to Overview report export
Added PoS selection guidance in Overview Frequency options
Updated Custom PoS List template and docs to clarify any custom tag is allowed
Improved working folder selector with visual feedback
Reorganized settings layout (2x2 grid)
Time variable aggregation for Date types (day/week/month/quarter/year)

Dependency Parsing Features

Dependency-based word network as an alternative to co-occurrence
Configurable dependency relation filters (all/noun_mod/SVO/custom)

Architectural Refactoring

Split tallFunctions.R into 10 thematic modules: tallSentiment.R, tallNetwork.R, tallTopicModel.R, tallEmbeddings.R,
tallOverview.R, tallUtils.R, tallVisualization.R, tallTextIO.R, tallNLP.R,
tallReport.R, tallLanguages.R
Extracted static CSS into www/tall-static.css
Added www/tall-handlers.js for JavaScript handlers
Modernized icons (migrated to FontAwesome 6)
Cleaned up NAMESPACE (removed unnecessary exports)
Added test suite: test-calculate_ngram_is.R, test-process_multiwords.R,
test-reinert.R, test-txt_recode_fast.R
Added stm dependency to DESCRIPTION

Code Quality

Propagated random seed to all analyses (topic models, networks, wordclouds, sampling)
Default community detection switched from walktrap to louvain
Removed deprecated Grako module
Renamed “Co-Word Analysis” to “Word Network Analysis”
Updated all Info & References sections
Removed legacy code from tallEmbeddings.R and words.R (~1,160 lines removed)

Bug Fixes

Fixed KWIC on filtered collections
Fixed overview with filtered corpus
Fixed group handling in filters_groups.R
Minor fixes in import, edit, settings, collocation

tall 0.5.2

New Features & UI/UX Improvements

Added “Add to Report” and “Export Images” buttons to Overview module
Added “Add to Report” and “Export Images” buttons to Keyness Analysis module
Added “Add to Report” and “Export” buttons to KWIC Network Analysis
Improved table layout and aesthetics across multiple modules

Bug Fixes

Fixed issue in Edit -> Split functionality
Minor fixes in Import module and Settings

tall 0.5.0

New Features & Modules -Supervised Classification -New Module: Implemented a full Supervised Classification interface within the “Documents” section. - Workflow: Added support for two analysis approaches: DTM (Document-Term Matrix) and Embeddings.

Keyness Analysis
- Two-Corpus Comparison: Added a new approach to compare a target corpus against a reference corpus.
- Lemma Analysis: Enabled lemma-based analysis for the two-corpus comparison approach.
- PoS Inheritance: Implemented setting inheritance, allowing Keyness to use the selection made in the “PoS Tag Selection” menu.
- Visualization: Added the Frequency Context Plot.
Multi-Word & Text Processing
- Methodology: Implemented Morrone’s IS index as a new method for automatic Multi-Word creation.
- Synonyms: Added new functionalities for synonym merging.
- Normalization: Added a “normalize tokens” option in the PoS tagging menu.
Feature Roles: Added a dedicated Feature Roles menu.

Performance & Code Refactoring

C++ Optimization: Rewrote txt_recode and applyRake functions in C++, achieving an approximate 200x speed increase.
Modular Architecture: Refactored ui.R and server.R by restructuring menus into modules imported from external files.
Pre-Processing: Refactored the layout of the Special Entities menu.

UI/UX & Visualization Improvements

Navigation & Layout
- Settings Menu: Relocated from the sidebar to the top-right header for better accessibility.
- Menu Structure: Added labels to separate menu sections; renamed “Custom Term List” to “Custom POS”.
- Aesthetics: Improved the styling of the dropdown options menu (matching Biblioshiny aesthetics).
- Back to Top: Implemented a “Back to top” scroll button across all pages.
Page Layouts: Enhanced layouts for:
- Welcome Page
- Extractive Summarization
- View Full Document modal
- Team, Donation, and Credits tabs
- PoS Tag List (in Selection Menu)

Visualizations

Word Clouds: Implemented a new function to generate word clouds using ggplot2.
Correspondence Analysis: Added absolute contribution data to the plot tooltip.
Topic Modeling: Improved aesthetics and output for Topic Correlation.
Stats Box: Added a corpus size statistics box within the PoS Tag Selection menu.
DTformat: Added a parameter to toggle visibility between lemmas and tokens.

Bug Fixes & Logic Updates

Split Logic: Fixed an issue where the split button removed the entire original document instead of just the split segment (corrected doc_id targeting).
Statistics: Corrected a calculation error in the Overview statistics.
Filters: Synchronized the effect of the Filters menu on the Feature Roles module.
Documentation: Added the official bibliographic reference to the CITATION file.

tall 0.1.0

Initial CRAN submission.

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