MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/23/02 through 03/29/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1 200 201
Davis 21 4 25
Irvine 48 0 48
Los Angeles 0 124 124
Riverside 0 10 10
San Diego 20 77 97
San Francisco 2 0 2
Santa Barbara 2 31 33
Santa Cruz 10 10 20
Lawrence Berkeley 0 49 49
Lawrence Livermore 0 18 18
Los Alamos 0 0 0
Other - UC 0 15 15
Other-Network UC n/a 299 299
_______ ______ _____
104 837 941
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 600 1,521 13,950
INS90 134 214 1,689
INS85 71 108 2,318
INS80 67 116 845
INS69 69 133 1,676
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 50 129 940
2-4 a.m. 18 36 242
4-6 a.m. 20 52 288
6-8 a.m. 38 102 893
8-10 a.m. 130 267 2,817
10-12 a.m. 153 336 3,699
12-2 p.m. 151 320 3,356
2-4 p.m. 179 379 4,319
4-6 p.m. 113 296 2,397
6-8 p.m. 35 64 744
8-10 p.m. 24 60 503
10-12 p.m. 30 51 280
__________ __________ __________ _________________
Total: 941 2,092 20,478
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 1 430 431
Davis 41 12 53
Irvine 124 0 124
Los Angeles 0 290 290
Riverside 0 21 21
San Diego 42 172 214
San Francisco 3 0 3
Santa Barbara 1 98 99
Santa Cruz 38 21 59
Lawrence Berkeley 0 138 138
Lawrence Livermore 0 63 63
Los Alamos 0 0 0
Other - UC 0 49 49
Other-Network UC n/a 548 548
_______ ______ _____
250 1,842 2,092
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 5,349 5,349
Davis 315 4 319
Irvine 1,795 0 1,795
Los Angeles 0 2,936 2,936
Riverside 0 102 102
San Diego 336 1,575 1,911
San Francisco 7 0 7
Santa Barbara 8 762 770
Santa Cruz 100 317 417
Lawrence Berkeley 0 2,493 2,493
Lawrence Livermore 0 329 329
Los Alamos 0 0 0
Other - UC 0 389 389
Other-Network UC n/a 3,661 3,661
_______ ______ _____
2,561 17,917 20,478
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.4
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) 10:19
Average session length (minutes:seconds) 15:01
Longest session recorded (minutes:seconds) 340:12
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 319.2
Retrievals per search - standard deviation 2586.9
Percent of searches completed with 0 results 26.3%
Percent of searches entered that are long 4.3%
Percent of long searches completed
(includes partial results) 67.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,916 29.9%
DISPLAY (excluding automatic displays) 2,543 39.6%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 56 0.9%
EXPLAIN 85 1.3%
SET/RESET 567 8.8%
SHOW 11 0.2%
ADD ON (AND, OR, AND NOT) 176 2.7%
LOGON or LOGOFF 812 12.7%
COMMENT 0 0.0%
SAVE 14 0.2%
USE 0 0.0%
OTHER 235 3.7%
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 954 46.3% 219 23.0% 17 71.6 243.9
TITLE WORD 389 18.9% 159 40.9% 4 118.8 1188.9
EXACT TITLE 21 1.0% 13 61.9% 1 1.6 1.2
JOURNAL 81 3.9% 38 46.9% 146 2701.8 4981.2
EXACT JOURNAL 20 1.0% 4 20.0% 302 1438.5 2430.7
SUBJECT 79 3.8% 25 31.6% 21 173.2 492.5
EXACT SUBJECT 2 0.1% 0 0.0% 9 8.5 0.7
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 393 19.1% 72 18.3% 26 1204.3 5981.2
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 6 0.3% 1 16.7% 6 76.2 124.1
DATE 47 2.3% 6 12.8% 5 68.3 208.7
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. 6 0.3% 5 83.3% 199 199.0 0.0
CONFERENCE 9 0.4% 4 44.4% 71 255.8 321.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 5 0.2% 2 40.0% 10 11.0 3.6
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 45 2.2% 10 22.2% 5 535.2 1683.5
EXACT PE 4 0.2% 2 50.0% 1 1.0 0.0
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 1 0.0% 0 0.0% 15 15.0 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 172 9.1% 61 35.5% 5 42.0 140.4
Single 1,714 90.9% 437 25.5% 18 492.7 3261.6
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 8.5%
SHORT 81.4%
LONG 3.5%
TAGS 1.2%
FIELDS 2.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.4%
COMMENTS 0.0%
Other 0.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 39.9%
2. First word of command is invalid 36.3%
3. FIND command with invalid index name 6.1%
4. DISPLAY command contains invalid word 3.3%
5. DISPLAY command - no FIND results 1.4%
6. Search term missing from search command 1.4%
7. Invalid SET DB INS command issued 1.4%
8. NS of SHOW/EXP command-no next screen 1.2%
9. Valid command at an inappropriate time 1.1%
10. Command contains escape or arrow key 1.1%
11. All others 6.9%
Ten most frequent EXPLAIN requests:
1. GUIDE (INSPEC DBS) 18.8%
2. INSPEC DATABASES 12.9%
3. FIND (INSPEC DBS) 12.9%
4. LOCATE (INS/PSY DBS) 5.9%
5. INDEXES (INSPEC DBS) 5.9%
6. Unrecognized term 5.9%
7. DATABASES 5.9%
8. 1752 5.9%
9. MAIL 4.7%
10. INSPEC BACKFILES 3.5%
11. All others 17.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.3%
2. DISPLAY command-first of >1 screen 9.2%
3. FIND command with invalid index name 8.5%
4. First word of command is invalid 7.8%
5. DISPLAY command-complete in one screen 7.1%
6. FIND command retrieves >1 book 5.7%
7. FIND command with zero results 4.3%
8. DISPLAY command - last of >1 screen 4.3%
9. NS command - no next screen 3.5%
10. FIND command retrieves 1 book 3.5%
11. All others 24.8%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. INSPEC NEWS 11.1%
3. GLOSSARY 11.1%
4. SYSTEM NEWS 11.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)