KNIME & Teacher Bots: From Workflows to Micro Services
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1 KNIME & Teacher Bots: From Workflows to Micro Services Kathrin Melcher Vincenzo Tursi Rosaria Silipo Phil Winters 2018 KNIME AG. All Right Reserved.
2 The History of Bots 1950 A.L.I.C.E. Artificial Linguistic Internet Computer Entity. Alan Turing 2
3 Bots A bot is software designed to automate the kinds of tasks you would usually do on your own (or another human would do for you). Search Bots Teaching Bots Communication Bots Personal Assistant Bots Data & Developer Bots Team Bots 3
4 The Human Internet Search Process Ask Question Translate to Keyword(s) Not Yet Keywords Categories Index Best Question Answer? None Yes X 4
5 The Search Challenge: Context A Jewish Holiday Paul Shapiro Professional Search marketer (and huge KNIME fan ) Optimizing for Hanukkah: Sometimes it s still strings, not things Hannukah Chanukah Hanukah Channukah Chanuka Chanukkah Hanukka Chanukka Hannukkah Ḥanukkah Channuka Festival of Lights Feast of Dedication 5
6 A Data Science Project Training set classes Data Preparation Training Test set Apply Scoring 6
7 Reality Check classes Training set Data Preparation Training Test set Apply Scoring 7
8 Ontology Definition Ontology is the philosophical study of the nature of being, becoming, existence, or reality, as well as the basic categories of being and their relations Introduced by Greek philosophers (Parmenides) Parmenides was among the first to propose an ontological characterization of the fundamental nature of reality In computer science and information science, an ontology is a formal naming and definition of the types, properties, and interrelationships of entities 8
9 Ontology Example Uberon-an-integrative-multi-species-anatomy-ontology-gb r5-2.jpg Relationship of major animal lineages with indication of how long ago these animals shared a common ancestor. On the left, important organs are shown, which allows us to determine how long ago these may have evolved. 9
10 The Specialist Topic Search Process Ask Question Translate to Keyword(s) Not Yet Keywords Categories Special Ontology Medicine symptoms diseases treatments Best Question Answer? Yes None Pharmaceutical drugs dosages allergies X 10
11 Creating an Ontology: Simple! Build Context Ask Question Translate to Keyword(s) Not Yet Keywords Categories Ontology Best Question Answer? None Yes X 11
12 A Real World Ontology Need: I want to learn KNIME I have a question.. Terms Concepts Context Background Depth Breadth Language E-learning Forum Blog Other 12
13 Our Own Ontology (20 Classes) From e-learning Course From other Resources From Experience Installation Data Access ETL Mining Control Deployment DataViz Use Cases Text Processing Big Data Server Image Processing Reporting Development Integration Optimizing KNIME Life Science Announcement Bug Legal 13
14 Active Learning Cycle 1 st attempt Class Labels Training Extract most uncertain predictions Class Label Extension Training Set [Forum Questions] Re-labeling 14
15 The Human Learn KNIME Process Ask Question Translate to Keyword(s) Not Yet Keywords Categories Index Best Question Answer? None Yes X 15
16 Teacher Bot Emil : A Bot to help Learn KNIME Ask Question Teaching bot Translate to Keyword(s) Not Yet Best Question Answer? None Keywords Categories KNIME Ontology Yes X 16
17 Teacher Bot Emil Question Emil, our Teacher Bot! 17
18 Teacher Bot Emil Category 18
19 Teacher Bot Emil Links 19
20 Teacher Bot Emil Links 20
21 Teacher Bot Emil : A Bot to help Learn KNIME Ask Question Teaching bot Translate to Keyword(s) Not Yet Best Question Answer? None Keywords Categories KNIME Ontology Yes X 21
22 Teacher Bot Emil Goodbye! 22
23 Teacher Bot Emil ML Find Resources Update Datasets 23
24 Creation of an Initial Ontology Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? None Yes X 24
25 Web Crawling KNIME Resources Only three nodes 25
26 Step 0 Initial Labeling Resources Extract Keywords Distance measure Find Closest Resource Labels from Ontology Training Set v0 Forum Extract Keywords Ontology Labeling a Training Set based on Distance (and no Clue) 26
27 Step 0 Initial Labeling Labeling a Training Set based on Distance (and no Clue) Chi-Square N-gram Tanimoto 27
28 Step 1 - Training 28
29 Creation of an Initial Ontology Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? None Yes X 29
30 Adding Active Learning to the Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? None Active Learning Cycle Yes X 30
31 Active Learning Random Forest 10% most uncertain classes Diff. between three top probabilities for each predicted class Training Subset chosen to be labeled Active Learning Cycle Training Set Extend Initial Labelling Based on Distance k-nn (k=1) Labeling Predicted Classes or Something Else Category Assign Labeling Labeling manually all Something Else Category Define 31
32 Adding Active Learning to the Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? None 10% most uncertain Active Learning Cycle Yes X Category Assign 32
33 Category Assign Category 33
34 Step 2a - Category Assign Reading Data Update Datasets 34
35 Adding Active Learning to the Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? None 10% most uncertain Active Learning Cycle Yes Category Assign Category Define 35
36 Step 2b - Category Define Adding Label 36
37 Step 2b - Category Define 37
38 Adding Active Learning to the Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? Yes None 10% lowest probability Active Learning Cycle Category Assign Extend Category Define 38
39 Step 3 Extend with k-nn Expert has labelled uncertain samples k-nn (k=1) extends the expert classes to their neighbor sample 39
40 Step 3 - Extend with k-nn Chi-Square k-nn k=1 40
41 Adding Active Learning to the Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? Yes None 10% lowest probability Active Learning Cycle Category Assign Extend Category Define 41
42 Combining the Teaching Bot and the Active Learning Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? Yes None 10% lowest probability Active Learning Cycle Category Assign Extend Category Define 42
43 Changes in Training Set AL Iteration 0 AL Iteration 1 AL Iteration 2 43
44 Answer Evolution AL # Input Dataset Output Ver Accuracy Timestamp 0 Traning_Set_v0 Random_Forest_v /2/ Traning_Set_v1 Random_Forest_v /2/ Traning_Set_v2 Random_Forest_v /2/2018 Version 0 Version 2 44
45 Combining the Teaching Bot and the Active Learning Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? Yes None 10% lowest probability Active Learning Cycle Category Assign Extend Category Define 45
46 From building one time to reusing Components: MicroServices Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? Yes None 10% lowest probability Active Learning Cycle Category Assign Extend Category Define 46
47 Microservices 47
48 Microservices - Converting reusable Subflows into Microservices Metanode Templates Microservices 48
49 Combining the Teaching Bot and the Active Learning Cycle Ask Question Teaching bot Translate to Keyword(s) Not Yet Keywords Categories KNIME Ontology Training Training Set Initial Labelling Best Question Answer? Yes None 10% lowest probability Active Learning Cycle Category Assign Extend Category Define 49
50 What we have tried to show. Creating a basic bot Building an Ontology with Active Learning Automating the process Converting reusable subflows into micro services 50
51 What did we learn? KNIME forum is used as educational tool Support is search Keyword extraction is a plus with respect to just keyword search Re-adjust your class system (and goals) from time to time Accuracy is not all New educational page on DataViz Optimizing KNIME -> Maybe another blog post? 51
52 How could this be extended? Improve text processing phase (tagging) Use word embedding Problem: Document Vector leads to big and sparse feature spaces Solution: Train a vector representation for each word using the Word2Vec Use the Keras integration to replace the Random Forest with a Neural Network which uses LSTM layers. Investigate the role of parameters: 10% of uncertain K=1 in k-nearest Neighbors Forgetting functions? Add speech recognition? KNIME YouTube videos as additional resource 52
53 Where to find more Presentation available immediately Series of blog posts in the next weeks Workflows on EXAMPLE Server Collection of blog posts in a whitepaper 53
54 KNIME & Teacher Bots: From Workflows to Micro Services Kathrin Melcher Vincenzo Tursi Rosaria Silipo Phil Winters 2018 KNIME AG. All Right Reserved.
55 The KNIME trademark and logo and OPEN FOR INNOVATION trademark are used by KNIME AG under license from KNIME GmbH, and are registered in the United States. KNIME is also registered in Germany. 55
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