MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/15/01 through 09/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 225 228
Davis 27 0 27
Irvine 57 0 57
Los Angeles 0 90 90
Riverside 3 21 24
San Diego 47 118 165
San Francisco 4 0 4
Santa Barbara 1 41 42
Santa Cruz 10 25 35
Lawrence Berkeley 0 28 28
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 1 35 36
Other-Network UC n/a 483 483
_______ ______ _____
153 1,069 1,222
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 823 1,840 12,199
INS90 154 288 1,014
INS85 92 187 732
INS80 76 138 534
INS69 77 196 1,131
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 73 511
2-4 a.m. 19 76 573
4-6 a.m. 24 61 263
6-8 a.m. 65 132 667
8-10 a.m. 218 421 1,903
10-12 a.m. 252 524 3,143
12-2 p.m. 189 435 2,656
2-4 p.m. 205 378 2,310
4-6 p.m. 144 324 2,313
6-8 p.m. 48 103 637
8-10 p.m. 20 59 257
10-12 p.m. 13 63 377
__________ __________ __________ _________________
Total: 1,222 2,649 15,610
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 15 528 543
Davis 53 0 53
Irvine 120 0 120
Los Angeles 0 236 236
Riverside 5 25 30
San Diego 114 311 425
San Francisco 30 0 30
Santa Barbara 0 74 74
Santa Cruz 19 58 77
Lawrence Berkeley 0 72 72
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 1 92 93
Other-Network UC n/a 891 891
_______ ______ _____
357 2,292 2,649
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 77 4,297 4,374
Davis 320 0 320
Irvine 1,578 0 1,578
Los Angeles 0 1,366 1,366
Riverside 35 103 138
San Diego 445 2,607 3,052
San Francisco 132 0 132
Santa Barbara 0 621 621
Santa Cruz 246 380 626
Lawrence Berkeley 0 320 320
Lawrence Livermore 0 50 50
Los Alamos 0 0 0
Other - UC 0 318 318
Other-Network UC n/a 2,715 2,715
_______ ______ _____
2,833 12,777 15,610
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 6.9
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) 10:38
Average session length (minutes:seconds) 13:22
Longest session recorded (minutes:seconds) 128:52
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 269.6
Retrievals per search - standard deviation 2506.4
Percent of searches completed with 0 results 30.6%
Percent of searches entered that are long 5.4%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,380 31.8%
DISPLAY (excluding automatic displays) 2,650 35.4%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 44 0.6%
EXPLAIN 62 0.8%
SET/RESET 783 10.5%
SHOW 37 0.5%
ADD ON (AND, OR, AND NOT) 269 3.6%
LOGON or LOGOFF 931 12.4%
COMMENT 0 0.0%
SAVE 28 0.4%
USE 4 0.1%
OTHER 302 4.0%
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 1,144 44.5% 284 24.8% 19 137.5 460.5
TITLE WORD 698 27.1% 320 45.8% 4 77.0 463.4
EXACT TITLE 12 0.5% 9 75.0% 2 73.3 124.4
JOURNAL 58 2.3% 24 41.4% 75 2958.6 10388.2
EXACT JOURNAL 24 0.9% 19 79.2% 527 2603.8 3426.4
SUBJECT 31 1.2% 10 32.3% 24 171.5 470.0
EXACT SUBJECT 11 0.4% 6 54.5% 309 1105.4 1780.9
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 411 16.0% 77 18.7% 28 1222.5 5932.5
SUBFILE 6 0.2% 2 33.3% 11 10.5 4.1
FORM 3 0.1% 0 0.0% 8 15.0 17.6
DATE 63 2.5% 8 12.7% 6 50.2 112.4
ADDED 4 0.2% 3 75.0% 12 12.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 12 0.5% 3 25.0% 5 123.2 267.2
CONFERENCE 4 0.2% 1 25.0% 174 1172.0 1728.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 5 0.2% 2 40.0% 14 14.0 0.0
ISSN 2 0.1% 2 100% 0 0.0 0.0
ISBN 4 0.2% 1 25.0% 82 55.0 46.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 76 3.0% 9 11.8% 5 100.1 298.1
EXACT PE 3 0.1% 0 0.0% 9 12.3 8.5
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 0 0.0% 0 0.0% 0 0.0 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 213 9.1% 75 35.2% 7 29.0 75.1
Single 2,127 90.9% 625 29.4% 18 456.0 3282.0
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 3 100% 0 0.0% 2 11.7 17.6
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.4%
SHORT 82.2%
LONG 3.6%
TAGS 0.0%
FIELDS 6.2%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 0.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.1%
Ten most frequent errors:
1. NS command - no next screen 45.3%
2. First word of command is invalid 23.5%
3. FIND command with invalid index name 5.9%
4. Max. # of ports to a Z39 db are in use 4.5%
5. DISPLAY command contains invalid word 3.6%
6. Invalid SET DB INS command issued 2.0%
7. DISPLAY command-record numbers too large 1.7%
8. PS command - no previous screen 1.4%
9. Valid command at an inappropriate time 1.2%
10. Search term missing from search command 1.2%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 16.1%
2. FIND (INSPEC DBS) 16.1%
3. MAIL 12.9%
4. INSPEC BACKFILES 6.5%
5. GUIDE (INSPEC DBS) 4.8%
6. INDEXES (INSPEC DBS) 4.8%
7. DISPLAY (INS/PSY DBS) 4.8%
8. LOCATE (INS/PSY DBS) 3.2%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.2%
10. I047 3.2%
11. All others 24.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.8%
2. First word of command is invalid 14.2%
3. DISPLAY command - last of >1 screen 13.2%
4. DISPLAY command - middle of >1 screen 8.5%
5. DISPLAY command-first of >1 screen 6.6%
6. FIND command with invalid index name 3.8%
7. NS command - no next screen 2.8%
8. FIND command with zero results 2.8%
9. FIND command retrieves 1 book 2.8%
10. FIND command retrieves >1 book 2.8%
11. All others 21.7%
Ten most frequent SHOW requests:
1. HISTORY 51.4%
2. MAIL STATUS 27.0%
3. INSPEC LOADING STATISTICS 8.1%
4. SEARCH 5.4%
5. SETTINGS (INS/PSY DBS) 2.7%
6. GLOSSARY 2.7%
7. UPDATE 2.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)