MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 11/18/00 through 11/24/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 495 503
Davis 28 6 34
Irvine 62 0 62
Los Angeles 42 147 189
Riverside 1 20 21
San Diego 91 197 288
San Francisco 30 0 30
Santa Barbara 22 49 71
Santa Cruz 1 31 32
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 25 25
Los Alamos 0 0 0
Other - UC 0 36 36
Other-Network UC n/a 280 280
_______ ______ _____
285 1,301 1,586
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 923 2,230 18,523
INS90 241 469 2,465
INS85 176 293 1,377
INS80 142 239 1,975
INS69 104 224 1,338
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 67 147 915
2-4 a.m. 26 44 340
4-6 a.m. 48 77 396
6-8 a.m. 34 93 587
8-10 a.m. 161 281 1,317
10-12 a.m. 257 547 4,541
12-2 p.m. 235 524 4,566
2-4 p.m. 284 624 4,758
4-6 p.m. 201 457 3,402
6-8 p.m. 92 260 2,039
8-10 p.m. 92 188 1,423
10-12 p.m. 89 213 1,394
__________ __________ __________ _________________
Total: 1,586 3,455 25,678
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 18 1,050 1,068
Davis 88 10 98
Irvine 227 0 227
Los Angeles 80 319 399
Riverside 6 58 64
San Diego 220 471 691
San Francisco 64 0 64
Santa Barbara 22 126 148
Santa Cruz 2 50 52
Lawrence Berkeley 0 37 37
Lawrence Livermore 0 49 49
Los Alamos 0 0 0
Other - UC 0 72 72
Other-Network UC n/a 486 486
_______ ______ _____
727 2,728 3,455
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 68 8,170 8,238
Davis 530 14 544
Irvine 3,392 0 3,392
Los Angeles 702 2,369 3,071
Riverside 24 375 399
San Diego 878 2,270 3,148
San Francisco 359 0 359
Santa Barbara 362 1,305 1,667
Santa Cruz 1 139 140
Lawrence Berkeley 0 254 254
Lawrence Livermore 0 166 166
Los Alamos 0 0 0
Other - UC 0 870 870
Other-Network UC n/a 3,430 3,430
_______ ______ _____
6,316 19,362 25,678
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 7:04
Average session length (minutes:seconds) 11:07
Longest session recorded (minutes:seconds) 152:39
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 467.7
Retrievals per search - standard deviation 9460.6
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 71.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,218 30.9%
DISPLAY (excluding automatic displays) 3,895 37.4%
BROWSE 2 0.0%
SELECT 3 0.0%
HELP 70 0.7%
EXPLAIN 128 1.2%
SET/RESET 978 9.4%
SHOW 39 0.4%
ADD ON (AND, OR, AND NOT) 235 2.3%
LOGON or LOGOFF 1,273 12.2%
COMMENT 0 0.0%
SAVE 155 1.5%
USE 2 0.0%
OTHER 409 3.9%
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 1,632 45.7% 391 24.0% 12 64.9 236.7
TITLE WORD 574 16.1% 239 41.6% 7 64.4 202.2
EXACT TITLE 9 0.3% 6 66.7% 6 352.0 600.2
JOURNAL 126 3.5% 37 29.4% 79 657.5 1572.9
EXACT JOURNAL 18 0.5% 5 27.8% 481 777.8 1082.8
SUBJECT 55 1.5% 14 25.5% 50 1226.5 3711.6
EXACT SUBJECT 7 0.2% 2 28.6% 21 4289.2 6598.5
THESAURUS 1 0.0% 0 0.0% 10,643 10643.0 0.0
EXACT THESAURUS 4 0.1% 0 0.0% 6 717.8 1426.8
KEYWORD 893 25.0% 197 22.1% 17 1598.8 20149.4
SUBFILE 6 0.2% 0 0.0% 170 1041.5 2210.9
FORM 15 0.4% 1 6.7% 131 429.0 914.5
DATE 45 1.3% 13 28.9% 7 66.9 192.3
ADDED 4 0.1% 3 75.0% 3 3.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 86 2.4% 19 22.1% 15 715.2 2248.1
CONFERENCE 21 0.6% 5 23.8% 641 2070.7 4204.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 2 0.1% 0 0.0% 7,978 7978.0 11245.8
ISSN 2 0.1% 1 50.0% 172 172.0 0.0
ISBN 1 0.0% 0 0.0% 37 37.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 60 1.7% 11 18.3% 9 22.0 37.9
EXACT PE 9 0.3% 1 11.1% 2 4.3 4.6
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 3 0.1% 0 0.0% 26 30.0 6.9
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 389 12.2% 121 31.1% 6 135.4 800.0
Single 2,789 87.8% 702 25.2% 16 675.6 11689.0
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% 4 4.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 85.6%
LONG 2.3%
TAGS 0.0%
FIELDS 5.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.6%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 43.7%
2. First word of command is invalid 28.2%
3. FIND command with invalid index name 5.8%
4. DISPLAY command contains invalid word 2.8%
5. Search term missing from search command 2.0%
6. Invalid SET DB INS command issued 1.9%
7. PS command - no previous screen 1.4%
8. 1189 1.3%
9. NS of SHOW/EXP command-no next screen 1.2%
10. Valid command at an inappropriate time 1.0%
11. All others 10.6%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.6%
2. INSPEC DATABASES 14.8%
3. INDEXES (INSPEC DBS) 10.2%
4. LOCATE (INS/PSY DBS) 7.8%
5. INSPEC BACKFILES 7.0%
6. MAIL 6.3%
7. DATABASES 6.3%
8. GUIDE (INSPEC DBS) 4.7%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.9%
10. Unrecognized term 3.9%
11. All others 19.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.2%
2. First word of command is invalid 13.1%
3. FIND command with invalid index name 9.1%
4. DISPLAY command - middle of >1 screen 9.1%
5. FIND command retrieves >1 book 6.1%
6. FIND command with zero results 5.6%
7. 850 4.5%
8. DISPLAY command-complete in one screen 4.0%
9. DISPLAY command-first of >1 screen 4.0%
10. Multi-index search with zero results 3.5%
11. All others 21.7%
Ten most frequent SHOW requests:
1. HISTORY 71.8%
2. MAIL STATUS 12.8%
3. INSPEC LOADING STATISTICS 10.3%
4. UPDATE 5.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)