MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/02/02 through 02/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 236 240
Davis 70 4 74
Irvine 59 0 59
Los Angeles 1 61 62
Riverside 4 1 5
San Diego 55 250 305
San Francisco 3 0 3
Santa Barbara 4 28 32
Santa Cruz 4 28 32
Lawrence Berkeley 0 68 68
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 340 340
_______ ______ _____
204 1,051 1,255
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 784 1,767 16,785
INS90 182 292 1,608
INS85 110 164 782
INS80 105 191 1,115
INS69 74 138 630
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 36 73 498
2-4 a.m. 31 73 362
4-6 a.m. 19 33 397
6-8 a.m. 47 95 657
8-10 a.m. 165 322 2,006
10-12 a.m. 277 568 4,344
12-2 p.m. 175 327 2,783
2-4 p.m. 249 472 3,863
4-6 p.m. 145 290 3,148
6-8 p.m. 47 155 1,657
8-10 p.m. 32 66 352
10-12 p.m. 32 78 853
__________ __________ __________ _________________
Total: 1,255 2,552 20,920
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7 484 491
Davis 166 9 175
Irvine 135 0 135
Los Angeles 1 160 161
Riverside 19 1 20
San Diego 103 447 550
San Francisco 7 0 7
Santa Barbara 7 58 65
Santa Cruz 10 62 72
Lawrence Berkeley 0 149 149
Lawrence Livermore 0 20 20
Los Alamos 0 0 0
Other - UC 0 62 62
Other-Network UC n/a 645 645
_______ ______ _____
455 2,097 2,552
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 32 4,005 4,037
Davis 1,435 120 1,555
Irvine 2,508 0 2,508
Los Angeles 4 1,614 1,618
Riverside 141 7 148
San Diego 1,045 3,734 4,779
San Francisco 20 0 20
Santa Barbara 194 306 500
Santa Cruz 16 494 510
Lawrence Berkeley 0 1,435 1,435
Lawrence Livermore 0 108 108
Los Alamos 0 0 0
Other - UC 0 351 351
Other-Network UC n/a 3,351 3,351
_______ ______ _____
5,395 15,525 20,920
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 8:05
Average session length (minutes:seconds) 13:03
Longest session recorded (minutes:seconds) 486:54
Average number of searches completed per session 2.0
Retrievals per search - median 6.0
Retrievals per search - average 224.7
Retrievals per search - standard deviation 1506.8
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 5.7%
Percent of long searches completed
(includes partial results) 80.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,351 30.3%
DISPLAY (excluding automatic displays) 2,862 36.9%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 35 0.5%
EXPLAIN 59 0.8%
SET/RESET 747 9.6%
SHOW 11 0.1%
ADD ON (AND, OR, AND NOT) 201 2.6%
LOGON or LOGOFF 1,078 13.9%
COMMENT 0 0.0%
SAVE 80 1.0%
USE 1 0.0%
OTHER 327 4.2%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 1,342 50.0% 299 22.3% 13 91.7 453.8
TITLE WORD 453 16.9% 218 48.1% 4 220.0 1471.3
EXACT TITLE 14 0.5% 10 71.4% 18 20.3 22.7
JOURNAL 149 5.5% 56 37.6% 6 202.3 1516.9
EXACT JOURNAL 30 1.1% 20 66.7% 315 343.4 320.3
SUBJECT 92 3.4% 37 40.2% 87 821.5 1880.1
EXACT SUBJECT 8 0.3% 0 0.0% 37 98.9 146.3
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 7 0.3% 1 14.3% 7,696 7507.2 7713.5
KEYWORD 403 15.0% 65 16.1% 33 811.3 3257.8
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 2 0.1% 0 0.0% 37 37.0 19.8
DATE 55 2.0% 13 23.6% 21 175.6 535.6
ADDED 1 0.0% 0 0.0% 5 5.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 14 0.5% 4 28.6% 33 155.8 344.0
CONFERENCE 4 0.1% 2 50.0% 19 18.5 0.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 4 0.1% 2 50.0% 922 922.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 101 3.8% 10 9.9% 4 18.0 41.4
EXACT PE 4 0.1% 0 0.0% 15 15.3 10.9
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 2 0.1% 0 0.0% 60 59.5 10.6
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 355 15.3% 125 35.2% 4 45.7 244.2
Single 1,969 84.7% 485 24.6% 21 354.8 1912.3
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 2 100% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 82.3%
LONG 3.4%
TAGS 0.0%
FIELDS 4.9%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 5.6%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 50.2%
2. First word of command is invalid 23.9%
3. FIND command with invalid index name 4.1%
4. Invalid SET DB INS command issued 3.9%
5. DISPLAY command contains invalid word 2.5%
6. DISPLAY command - no FIND results 1.7%
7. DISPLAY command-record numbers too large 1.7%
8. Search term missing from search command 1.6%
9. PS command - no previous screen 1.1%
10. Invalid SET DATABASE command issued 0.8%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 18.6%
2. GUIDE (INSPEC DBS) 16.9%
3. INSPEC BACKFILES 11.9%
4. FIND (INSPEC DBS) 8.5%
5. MAIL 5.1%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 5.1%
7. INDEXES (INSPEC DBS) 5.1%
8. 1752 5.1%
9. INDEXES (INSPEC DBS) 3.4%
10. Unrecognized term 3.4%
11. All others 16.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 31.9%
2. First word of command is invalid 12.8%
3. NS command - no next screen 8.5%
4. DISPLAY command - last of >1 screen 8.5%
5. FIND command with zero results 5.3%
6. FIND command retrieves >1 book 5.3%
7. DISPLAY command - middle of >1 screen 4.3%
8. Help requested from SHOW SEARCH 3.2%
9. DISPLAY command-complete in one screen 3.2%
10. Multi-index search with zero results 3.2%
11. All others 13.8%
Ten most frequent SHOW requests:
1. HISTORY 45.5%
2. SEARCH 27.3%
3. GLOSSARY 9.1%
4. SYSTEM NEWS 9.1%
5. SYSTEM1 NEWS 9.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)