MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/01/02 through 06/30/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 682 698
Davis 123 3 126
Irvine 167 0 167
Los Angeles 0 380 380
Riverside 1 23 24
San Diego 125 372 497
San Francisco 8 0 8
Santa Barbara 7 114 121
Santa Cruz 2 73 75
Lawrence Berkeley 0 73 73
Lawrence Livermore 0 42 42
Los Alamos 0 0 0
Other - UC 4 103 107
Other-Network UC n/a 623 623
_______ ______ _____
453 2,488 2,941
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,853 4,699 44,278
INS90 398 684 5,018
INS85 272 435 3,753
INS80 210 343 1,523
INS69 208 432 4,575
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 62 141 1,488
2-4 a.m. 60 139 919
4-6 a.m. 60 166 1,274
6-8 a.m. 120 269 2,011
8-10 a.m. 358 812 6,107
10-12 a.m. 530 1,171 9,544
12-2 p.m. 384 794 5,526
2-4 p.m. 536 1,225 11,982
4-6 p.m. 454 920 10,227
6-8 p.m. 156 423 5,456
8-10 p.m. 125 245 2,112
10-12 p.m. 96 288 2,501
__________ __________ __________ _________________
Total: 2,941 6,593 59,147
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 23 1,512 1,535
Davis 282 3 285
Irvine 480 0 480
Los Angeles 0 767 767
Riverside 1 95 96
San Diego 294 983 1,277
San Francisco 16 0 16
Santa Barbara 7 246 253
Santa Cruz 3 139 142
Lawrence Berkeley 0 183 183
Lawrence Livermore 0 76 76
Los Alamos 0 0 0
Other - UC 8 257 265
Other-Network UC n/a 1,218 1,218
_______ ______ _____
1,114 5,479 6,593
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 181 17,825 18,006
Davis 1,602 22 1,624
Irvine 7,125 0 7,125
Los Angeles 0 7,707 7,707
Riverside 0 232 232
San Diego 2,374 7,149 9,523
San Francisco 22 0 22
Santa Barbara 41 1,666 1,707
Santa Cruz 40 1,035 1,075
Lawrence Berkeley 0 2,004 2,004
Lawrence Livermore 0 317 317
Los Alamos 0 0 0
Other - UC 13 1,969 1,982
Other-Network UC n/a 7,823 7,823
_______ ______ _____
11,398 47,749 59,147
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 2.3
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) 9:57
Average session length (minutes:seconds) 16:37
Longest session recorded (minutes:seconds) 585:47
Average number of searches completed per session 2.2
Retrievals per search - median 5.0
Retrievals per search - average 369.7
Retrievals per search - standard deviation 4830.9
Percent of searches completed with 0 results 26.1%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 74.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,062 30.5%
DISPLAY (excluding automatic displays) 7,648 38.5%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 110 0.6%
EXPLAIN 184 0.9%
SET/RESET 1,610 8.1%
SHOW 37 0.2%
ADD ON (AND, OR, AND NOT) 531 2.7%
LOGON or LOGOFF 2,783 14.0%
COMMENT 0 0.0%
SAVE 102 0.5%
USE 1 0.0%
OTHER 775 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 2,895 43.2% 662 22.9% 16 90.7 534.6
TITLE WORD 1,210 18.0% 474 39.2% 4 250.9 2905.2
EXACT TITLE 54 0.8% 22 40.7% 2 15.5 47.7
JOURNAL 302 4.5% 92 30.5% 10 495.0 1975.4
EXACT JOURNAL 100 1.5% 40 40.0% 28 794.8 2256.5
SUBJECT 241 3.6% 79 32.8% 23 1140.9 8181.4
EXACT SUBJECT 3 0.0% 0 0.0% 903 1530.0 1586.3
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 1,281 19.1% 284 22.2% 26 1640.8 11658.9
SUBFILE 3 0.0% 1 33.3% 61 60.5 40.3
FORM 16 0.2% 3 18.8% 10 30.5 41.6
DATE 82 1.2% 17 20.7% 44 528.0 1094.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 110 1.6% 18 16.4% 59 335.9 1203.0
CONFERENCE 16 0.2% 5 31.3% 196 416.5 368.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 61 0.9% 18 29.5% 13 58.0 103.3
ISSN 6 0.1% 4 66.7% 8,311 8311.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 272 4.1% 36 13.2% 5 110.4 577.7
EXACT PE 53 0.8% 4 7.5% 2 35.7 122.8
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 1 0.0% 0 0.0% 113 113.0 0.0
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 718 12.0% 234 32.6% 7 264.0 3368.8
Single 5,261 88.0% 1,289 24.5% 17 560.4 6050.3
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% 2 1.5 0.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.7%
SHORT 82.4%
LONG 3.5%
TAGS 0.8%
FIELDS 2.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.3%
COMMENTS 0.0%
Other 0.9%
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 24.9%
3. 167 6.7%
4. FIND command with invalid index name 5.2%
5. DISPLAY command contains invalid word 2.4%
6. NS of SHOW/EXP command-no next screen 1.8%
7. DISPLAY command - no FIND results 1.6%
8. Valid command at an inappropriate time 1.5%
9. PS command - no previous screen 1.5%
10. Invalid SET DB INS command issued 1.3%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 18.5%
2. INSPEC DATABASES 13.0%
3. GUIDE (INSPEC DBS) 10.9%
4. INDEXES (INSPEC DBS) 8.7%
5. INSPEC BACKFILES 6.5%
6. DATABASES 5.4%
7. MAIL 4.3%
8. LOCATE (INS/PSY DBS) 4.3%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 4.3%
10. 1752 4.3%
11. All others 19.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.2%
2. First word of command is invalid 14.3%
3. DISPLAY command - middle of >1 screen 8.5%
4. FIND command with zero results 6.1%
5. FIND command with invalid index name 5.4%
6. NS command - no next screen 4.8%
7. Multi-index search with zero results 3.7%
8. DISPLAY command - last of >1 screen 3.1%
9. 3 HELP commands issued from same code 2.7%
10. NS of SHOW/EXP command-no next screen 2.7%
11. All others 22.4%
Ten most frequent SHOW requests:
1. HISTORY 40.6%
2. SEARCH 18.8%
3. MAIL STATUS 18.8%
4. INSPEC NEWS 15.6%
5. SETTINGS (INS/PSY DBS) 3.1%
6. SYSTEM NEWS 3.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)