Indicator Functions: Sequenzo and TraMineR Mapping
This page maps Sequenzo indicator functions to their closest TraMineR counterparts for users migrating from R.
What This Section Covers
This section focuses on sequence-level indicators: functions that describe the internal structure of each sequence, such as transitions, entropy, complexity, turbulence, and quality-related scores.
For TraMineR users, you can think of this as the place to compute your core individual indicators first.
How It Relates to statistics
After computing indicators here, the statistics section helps you summarize and compare results (for example, descriptive summaries, state-time aggregates, and helper statistics).
In short:
sequence-characteristics-indicatorsanswers: "What is the structure/quality of each sequence?"statisticsanswers: "How do we summarize or compare those outputs?"
| Sequenzo function | TraMineR counterpart | Notes |
|---|---|---|
get_sequence_length | TraMineR::seqlength() | Direct match for sequence length. |
get_spell_durations | TraMineR::seqdur() | Direct match for spell durations. |
get_visited_states | TraMineR::seqindic(indic="visited") | Counts how many states each sequence visits. |
get_recurrence | TraMineR::seqindic(indic="recu") | Recurrence-style indicator. |
get_mean_spell_duration | TraMineR::seqivardur() / TraMineR::seqindic() (meand, meand2) | Mean spell duration (variant controlled by type). |
get_duration_standard_deviation | TraMineR::seqivardur() / TraMineR::seqindic() (dustd, dustd2) | Spell-duration standard deviation variants. |
get_subsequences_all_sequences | TraMineR::seqsubsn() | Number of distinct subsequences. |
get_number_of_transitions | TraMineR::seqtransn() | Number of transitions (including normalized/weighted options). |
get_spell_duration_variance | TraMineR::seqivardur() | Spell-duration variance (type 1 / type 2). |
get_state_freq_and_entropy_per_seq | TraMineR::seqistatd() | Per-sequence state distribution and related entropy view. |
get_within_sequence_entropy | TraMineR::seqient() | Within-sequence entropy. |
get_entropy_difference | TraMineR internal seqientdiff() | Entropy-difference indicator. |
get_cross_sectional_entropy | TraMineR::seqstatd() | Cross-sectional distribution/entropy by time position. |
get_volatility | TraMineR::seqivolatility() | Volatility indicator. |
get_complexity_index | TraMineR::seqici() | Complexity index. |
get_turbulence | TraMineR::seqST() | Turbulence indicator. |
get_positive_negative_indicators | TraMineR::seqipos() / TraMineR::seqindic() binary indicators | Binary-state indicator family. |
get_integration_index | TraMineR::seqintegr() | Integration indicator. |
get_badness_index | TraMineR::seqibad() | Ranked indicator. |
get_degradation_index | TraMineR::seqidegrad() | Ranked indicator. |
get_precarity_index | TraMineR::seqprecarity() | Ranked indicator. |
get_insecurity_index | TraMineR::seqinsecurity() | Ranked indicator. |
Authors
Code and documentation: Yuqi Liang
References
Gabadinho, A., G. Ritschard, N. S. Müller and M. Studer (2011). Analyzing and Visualizing State Sequences in R with TraMineR. Journal of Statistical Software 40(4), 1-37.
Ritschard, G. (2023), "Measuring the nature of individual sequences", Sociological Methods and Research, 52(4), 2016-2049. doi:10.1177/00491241211036156.