MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/01/01 through 09/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 25 1,065 1,090
Davis 169 1 170
Irvine 299 0 299
Los Angeles 1 503 504
Riverside 7 33 40
San Diego 157 437 594
San Francisco 41 0 41
Santa Barbara 8 147 155
Santa Cruz 16 99 115
Lawrence Berkeley 0 107 107
Lawrence Livermore 0 63 63
Los Alamos 0 1 1
Other - UC 3 112 115
Other-Network UC n/a 1,997 1,997
_______ ______ _____
726 4,565 5,291
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,407 7,520 57,004
INS90 720 1,307 6,353
INS85 434 769 3,730
INS80 376 627 3,479
INS69 354 853 5,679
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 95 223 1,619
2-4 a.m. 83 279 2,089
4-6 a.m. 79 169 1,248
6-8 a.m. 247 514 2,875
8-10 a.m. 715 1,377 8,617
10-12 a.m. 1,071 2,123 13,027
12-2 p.m. 797 1,681 11,855
2-4 p.m. 931 1,966 12,372
4-6 p.m. 745 1,575 13,005
6-8 p.m. 307 620 4,982
8-10 p.m. 132 314 2,508
10-12 p.m. 89 235 2,048
__________ __________ __________ _________________
Total: 5,291 11,076 76,245
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 71 2,474 2,545
Davis 452 2 454
Irvine 631 0 631
Los Angeles 2 1,041 1,043
Riverside 20 76 96
San Diego 325 1,050 1,375
San Francisco 114 0 114
Santa Barbara 10 343 353
Santa Cruz 29 255 284
Lawrence Berkeley 0 226 226
Lawrence Livermore 0 131 131
Los Alamos 0 1 1
Other - UC 7 336 343
Other-Network UC n/a 3,480 3,480
_______ ______ _____
1,661 9,415 11,076
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 324 21,225 21,549
Davis 3,475 1 3,476
Irvine 6,041 0 6,041
Los Angeles 0 7,911 7,911
Riverside 90 316 406
San Diego 2,106 10,030 12,136
San Francisco 597 0 597
Santa Barbara 41 2,673 2,714
Santa Cruz 490 1,515 2,005
Lawrence Berkeley 0 1,905 1,905
Lawrence Livermore 0 1,076 1,076
Los Alamos 0 0 0
Other - UC 40 2,529 2,569
Other-Network UC n/a 13,860 13,860
_______ ______ _____
13,204 63,041 76,245
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 6.2
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
_________________________________________
Median session length (minutes:seconds) 8:42
Average session length (minutes:seconds) 12:59
Longest session recorded (minutes:seconds) 733:53
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 969.0
Retrievals per search - standard deviation 17074
Percent of searches completed with 0 results 30.1%
Percent of searches entered that are long 4.9%
Percent of long searches completed
(includes partial results) 74.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,931 31.3%
DISPLAY (excluding automatic displays) 10,795 34.1%
BROWSE 9 0.0%
SELECT 0 0.0%
HELP 226 0.7%
EXPLAIN 344 1.1%
SET/RESET 3,247 10.2%
SHOW 98 0.3%
ADD ON (AND, OR, AND NOT) 1,145 3.6%
LOGON or LOGOFF 4,308 13.6%
COMMENT 0 0.0%
SAVE 359 1.1%
USE 10 0.0%
OTHER 1,230 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 4,671 43.0% 1,143 24.5% 15 95.2 374.1
TITLE WORD 2,472 22.7% 1,225 49.6% 4 80.8 534.7
EXACT TITLE 64 0.6% 48 75.0% 3 41.5 95.2
JOURNAL 275 2.5% 124 45.1% 101 3954.3 23820.8
EXACT JOURNAL 171 1.6% 114 66.7% 371 2175.2 4316.0
SUBJECT 278 2.6% 89 32.0% 21 419.7 1753.7
EXACT SUBJECT 24 0.2% 7 29.2% 8 2321.9 5595.8
THESAURUS 7 0.1% 2 28.6% 33 4895.0 6680.9
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 2,066 19.0% 348 16.8% 28 3373.3 30689.4
SUBFILE 9 0.1% 2 22.2% 13 19.1 16.2
FORM 26 0.2% 0 0.0% 35 77.8 89.8
DATE 241 2.2% 49 20.3% 16 115.9 529.4
ADDED 26 0.2% 16 61.5% 11 11.2 6.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 107 1.0% 34 31.8% 13 526.5 1282.0
CONFERENCE 27 0.2% 13 48.1% 509 5487.2 15154.7
LANGUAGE 1 0.0% 0 0.0% 21 21.0 0.0
CHEMICAL NAME 37 0.3% 13 35.1% 14 56.4 136.0
ISSN 6 0.1% 4 66.7% 10,976 10976.0 237.6
ISBN 6 0.1% 2 33.3% 42 41.5 46.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 321 3.0% 53 16.5% 5 73.1 234.7
EXACT PE 25 0.2% 3 12.0% 3 7.7 11.4
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 8 0.1% 0 0.0% 25 83.4 98.6
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 1,022 10.4% 364 35.6% 7 86.8 733.9
Single 8,789 89.6% 2,553 29.0% 17 1149.2 16622.5
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 9 100% 5 55.6% 2 9.0 15.3
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 83.6%
LONG 2.4%
TAGS 0.0%
FIELDS 6.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 44.4%
2. First word of command is invalid 26.6%
3. FIND command with invalid index name 5.7%
4. DISPLAY command contains invalid word 3.3%
5. Max. # of ports to a Z39 db are in use 3.2%
6. Search term missing from search command 1.4%
7. PS command - no previous screen 1.4%
8. NS of SHOW/EXP command-no next screen 1.2%
9. Invalid SET DB INS command issued 1.2%
10. DISPLAY command - no FIND results 1.1%
11. All others 10.5%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 16.6%
2. INSPEC DATABASES 11.6%
3. GUIDE (INSPEC DBS) 7.8%
4. INDEXES (INSPEC DBS) 6.7%
5. MAIL 5.8%
6. INSPEC BACKFILES 4.9%
7. DATABASES 4.9%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.7%
9. Unrecognized term 4.7%
10. DISPLAY (INS/PSY DBS) 3.8%
11. All others 28.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.6%
2. First word of command is invalid 13.7%
3. FIND command with zero results 7.7%
4. DISPLAY command-first of >1 screen 6.0%
5. NS command - no next screen 5.3%
6. DISPLAY command - last of >1 screen 5.1%
7. DISPLAY command - middle of >1 screen 4.9%
8. FIND command with invalid index name 4.2%
9. DISPLAY command-complete in one screen 3.5%
10. FIND command retrieves >1 book 3.2%
11. All others 23.9%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. SEARCH 10.2%
3. MAIL STATUS 10.2%
4. SETTINGS (INS/PSY DBS) 7.1%
5. INSPEC NEWS 7.1%
6. INSPEC LOADING STATISTICS 6.1%
7. GLOSSARY 3.1%
8. SYSTEM NEWS 2.0%
9. DATABASES 2.0%
10. MAIL SETTINGS 1.0%
11. All others 1.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)