MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/09/02 through 03/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 170 173
Davis 43 0 43
Irvine 82 0 82
Los Angeles 0 108 108
Riverside 0 21 21
San Diego 35 96 131
San Francisco 4 0 4
Santa Barbara 1 25 26
Santa Cruz 3 37 40
Lawrence Berkeley 0 37 37
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 26 26
Other-Network UC n/a 272 272
_______ ______ _____
171 801 972
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 667 1,583 13,679
INS90 118 223 1,292
INS85 73 124 748
INS80 59 120 591
INS69 55 104 600
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 24 52 402
2-4 a.m. 20 27 209
4-6 a.m. 37 76 307
6-8 a.m. 43 103 537
8-10 a.m. 130 256 2,519
10-12 a.m. 169 384 3,542
12-2 p.m. 120 264 1,799
2-4 p.m. 178 359 2,567
4-6 p.m. 124 362 3,211
6-8 p.m. 55 130 903
8-10 p.m. 38 78 567
10-12 p.m. 34 63 347
__________ __________ __________ _________________
Total: 972 2,154 16,910
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 5 452 457
Davis 147 0 147
Irvine 234 0 234
Los Angeles 0 215 215
Riverside 0 41 41
San Diego 65 201 266
San Francisco 4 0 4
Santa Barbara 2 35 37
Santa Cruz 12 57 69
Lawrence Berkeley 0 71 71
Lawrence Livermore 0 23 23
Los Alamos 0 0 0
Other - UC 0 41 41
Other-Network UC n/a 549 549
_______ ______ _____
469 1,685 2,154
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17 2,660 2,677
Davis 1,498 0 1,498
Irvine 4,152 0 4,152
Los Angeles 0 2,034 2,034
Riverside 0 256 256
San Diego 274 1,862 2,136
San Francisco 3 0 3
Santa Barbara 27 348 375
Santa Cruz 143 464 607
Lawrence Berkeley 0 533 533
Lawrence Livermore 0 78 78
Los Alamos 0 0 0
Other - UC 0 383 383
Other-Network UC n/a 2,178 2,178
_______ ______ _____
6,114 10,796 16,910
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) 7:48
Average session length (minutes:seconds) 14:23
Longest session recorded (minutes:seconds) 326:16
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 761.8
Retrievals per search - standard deviation 8119.4
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 73.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,995 30.7%
DISPLAY (excluding automatic displays) 2,343 36.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 45 0.7%
EXPLAIN 59 0.9%
SET/RESET 535 8.2%
SHOW 8 0.1%
ADD ON (AND, OR, AND NOT) 159 2.4%
LOGON or LOGOFF 940 14.5%
COMMENT 0 0.0%
SAVE 133 2.0%
USE 1 0.0%
OTHER 283 4.4%
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 901 42.0% 204 22.6% 14 60.1 198.4
TITLE WORD 452 21.1% 177 39.2% 6 68.2 269.1
EXACT TITLE 17 0.8% 8 47.1% 2 4.2 4.4
JOURNAL 37 1.7% 13 35.1% 875 16087.8 32792.9
EXACT JOURNAL 22 1.0% 6 27.3% 73 857.0 1486.9
SUBJECT 51 2.4% 10 19.6% 16 296.0 1428.3
EXACT SUBJECT 9 0.4% 0 0.0% 20 200.6 350.2
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 451 21.0% 85 18.8% 20 1328.7 6430.9
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 7 0.3% 2 28.6% 83 101.6 106.4
DATE 35 1.6% 6 17.1% 5 120.3 506.8
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. 41 1.9% 2 4.9% 142 16310.8 47039.9
CONFERENCE 10 0.5% 1 10.0% 1,034 8117.6 21338.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 1 0.0% 0 0.0% 4 4.0 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 95 4.4% 24 25.3% 5 80.2 284.1
EXACT PE 14 0.7% 1 7.1% 3 7.6 10.0
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 4 0.2% 0 0.0% 27 1553.0 3069.4
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 170 8.6% 44 25.9% 5 579.0 5789.8
Single 1,803 91.4% 448 24.8% 16 1136.6 10000.1
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.0%
SHORT 80.0%
LONG 4.6%
TAGS 0.0%
FIELDS 3.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.2%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.0%
Ten most frequent errors:
1. NS command - no next screen 49.0%
2. First word of command is invalid 28.0%
3. FIND command with invalid index name 5.7%
4. DISPLAY command contains invalid word 4.2%
5. Search term missing from search command 1.8%
6. Command contains escape or arrow key 1.2%
7. Add-on search, no index name after verb 0.9%
8. Single letter keyword search 0.7%
9. SET command with invalid setting 0.5%
10. DISPLAY command - no FIND results 0.5%
11. All others 7.4%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 10.2%
2. GUIDE (INSPEC DBS) 8.5%
3. FIND (INSPEC DBS) 8.5%
4. COMMANDS (INS/PSY/ABI/BIO DBS) 6.8%
5. MAIL 5.1%
6. FIND LOCATION 5.1%
7. INDEXES (INSPEC DBS) 5.1%
8. FIND (INSPEC DBS) 5.1%
9. LOCATE (INS/PSY DBS) 3.4%
10. LOCATIONS 3.4%
11. All others 39.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.8%
2. First word of command is invalid 20.2%
3. FIND command with invalid index name 8.7%
4. DISPLAY command-first of >1 screen 8.7%
5. DISPLAY command - last of >1 screen 5.8%
6. NS command - no next screen 4.8%
7. DISPLAY command - middle of >1 screen 3.8%
8. FIND command with zero results 2.9%
9. Multi-index search with zero results 2.9%
10. Add-on without index name after verb 1.9%
11. All others 11.5%
Ten most frequent SHOW requests:
1. HISTORY 75.0%
2. INSPEC LOADING STATISTICS 12.5%
3. GLOSSARY 12.5%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)