MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/01/01 through 12/07/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 279 287
Davis 52 3 55
Irvine 47 0 47
Los Angeles 1 119 120
Riverside 2 8 10
San Diego 58 66 124
San Francisco 10 0 10
Santa Barbara 1 34 35
Santa Cruz 2 25 27
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 22 22
Los Alamos 0 0 0
Other - UC 0 18 18
Other-Network UC n/a 322 322
_______ ______ _____
181 927 1,108
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 716 1,652 15,558
INS90 153 267 1,523
INS85 94 147 600
INS80 65 117 471
INS69 80 158 1,057
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 25 127
2-4 a.m. 7 11 106
4-6 a.m. 17 26 299
6-8 a.m. 44 76 432
8-10 a.m. 130 220 1,580
10-12 a.m. 199 465 3,654
12-2 p.m. 186 416 4,085
2-4 p.m. 207 456 3,424
4-6 p.m. 156 316 2,768
6-8 p.m. 74 162 1,676
8-10 p.m. 40 91 551
10-12 p.m. 36 77 507
__________ __________ __________ _________________
Total: 1,108 2,341 19,209
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 18 576 594
Davis 85 10 95
Irvine 119 0 119
Los Angeles 3 263 266
Riverside 5 18 23
San Diego 137 194 331
San Francisco 25 0 25
Santa Barbara 0 73 73
Santa Cruz 7 48 55
Lawrence Berkeley 0 105 105
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 0 71 71
Other-Network UC n/a 547 547
_______ ______ _____
399 1,942 2,341
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 106 5,326 5,432
Davis 581 5 586
Irvine 2,017 0 2,017
Los Angeles 25 2,550 2,575
Riverside 0 158 158
San Diego 576 2,193 2,769
San Francisco 54 0 54
Santa Barbara 0 536 536
Santa Cruz 9 307 316
Lawrence Berkeley 0 1,220 1,220
Lawrence Livermore 0 343 343
Los Alamos 0 0 0
Other - UC 0 721 721
Other-Network UC n/a 2,482 2,482
_______ ______ _____
3,368 15,841 19,209
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 4.7
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) 6:38
Average session length (minutes:seconds) 14:15
Longest session recorded (minutes:seconds) 1240
Average number of searches completed per session 2.1
Retrievals per search - median 7.0
Retrievals per search - average 801.3
Retrievals per search - standard deviation 13214
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 78.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,107 29.5%
DISPLAY (excluding automatic displays) 2,629 36.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 47 0.7%
EXPLAIN 82 1.1%
SET/RESET 620 8.7%
SHOW 15 0.2%
ADD ON (AND, OR, AND NOT) 234 3.3%
LOGON or LOGOFF 1,044 14.6%
COMMENT 0 0.0%
SAVE 73 1.0%
USE 1 0.0%
OTHER 291 4.1%
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 1,032 44.9% 194 18.8% 20 66.4 192.8
TITLE WORD 505 22.0% 239 47.3% 5 79.9 251.3
EXACT TITLE 13 0.6% 8 61.5% 1 4.0 4.1
JOURNAL 74 3.2% 25 33.8% 32 3154.6 8186.7
EXACT JOURNAL 14 0.6% 6 42.9% 9 15.0 15.9
SUBJECT 102 4.4% 42 41.2% 40 234.3 621.2
EXACT SUBJECT 9 0.4% 0 0.0% 141 131.4 117.8
THESAURUS 1 0.0% 1 100% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 343 14.9% 53 15.5% 43 5170.7 36872.1
SUBFILE 1 0.0% 0 0.0% 50 50.0 0.0
FORM 22 1.0% 4 18.2% 20 30.8 35.4
DATE 41 1.8% 14 34.1% 5 26.7 80.4
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. 17 0.7% 4 23.5% 38 51.2 56.6
CONFERENCE 13 0.6% 4 30.8% 48 69.1 73.9
LANGUAGE 1 0.0% 0 0.0% 42,401 42401.0 0.0
CHEMICAL NAME 21 0.9% 6 28.6% 68 1368.7 2644.9
ISSN 1 0.0% 1 100% 0 0.0 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 80 3.5% 15 18.8% 11 61.5 152.1
EXACT PE 7 0.3% 3 42.9% 4 3.5 1.3
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% 56 56.0 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 200 9.5% 73 36.5% 5 33.2 98.0
Single 1,896 90.5% 472 24.9% 22 1269.3 16851.1
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 1.9%
SHORT 84.6%
LONG 3.1%
TAGS 0.9%
FIELDS 3.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.8%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.5%
Ten most frequent errors:
1. First word of command is invalid 38.3%
2. NS command - no next screen 35.4%
3. FIND command with invalid index name 7.6%
4. DISPLAY command contains invalid word 3.4%
5. Max. # of ports to a Z39 db are in use 2.5%
6. PS command - no previous screen 1.8%
7. Search term missing from search command 1.2%
8. DISPLAY command-record numbers too large 1.0%
9. Valid command at an inappropriate time 0.8%
10. NS of SHOW/EXP command-no next screen 0.8%
11. All others 7.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 25.6%
2. INSPEC DATABASES 15.9%
3. GUIDE (INSPEC DBS) 15.9%
4. INSPEC BACKFILES 6.1%
5. DISPLAY (INS/PSY DBS) 6.1%
6. INDEXES (INSPEC DBS) 4.9%
7. Unrecognized term 4.9%
8. LOCATE (INS/PSY DBS) 3.7%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.7%
10. MAIL 2.4%
11. All others 11.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 38.0%
2. First word of command is invalid 14.0%
3. FIND command with invalid index name 6.2%
4. NS command - no next screen 4.7%
5. FIND command retrieves >1 book 4.7%
6. DISPLAY command - middle of >1 screen 4.7%
7. DISPLAY command - last of >1 screen 4.7%
8. FIND command with zero results 3.9%
9. DISPLAY command-first of >1 screen 2.3%
10. Add-on without index name after verb 1.6%
11. All others 15.5%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. SEARCH 13.3%
3. INSPEC LOADING STATISTICS 6.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)