MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/29/01 through 10/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1 332 333
Davis 29 5 34
Irvine 79 0 79
Los Angeles 0 161 161
Riverside 0 2 2
San Diego 35 156 191
San Francisco 4 0 4
Santa Barbara 1 23 24
Santa Cruz 0 21 21
Lawrence Berkeley 0 35 35
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 0 46 46
Other-Network UC n/a 415 415
_______ ______ _____
149 1,207 1,356
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 852 1,722 16,120
INS90 209 370 2,632
INS85 117 186 792
INS80 97 167 1,238
INS69 81 162 1,011
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 23 53 246
2-4 a.m. 9 16 45
4-6 a.m. 20 50 190
6-8 a.m. 33 105 585
8-10 a.m. 172 297 2,309
10-12 a.m. 260 451 2,945
12-2 p.m. 246 475 4,334
2-4 p.m. 242 405 3,419
4-6 p.m. 206 430 4,711
6-8 p.m. 88 191 1,762
8-10 p.m. 35 65 357
10-12 p.m. 22 69 890
__________ __________ __________ _________________
Total: 1,356 2,607 21,793
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 0 663 663
Davis 62 23 85
Irvine 118 0 118
Los Angeles 0 304 304
Riverside 0 7 7
San Diego 43 363 406
San Francisco 5 0 5
Santa Barbara 1 43 44
Santa Cruz 0 53 53
Lawrence Berkeley 0 92 92
Lawrence Livermore 0 20 20
Los Alamos 0 0 0
Other - UC 0 114 114
Other-Network UC n/a 696 696
_______ ______ _____
229 2,378 2,607
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 8,103 8,103
Davis 411 262 673
Irvine 881 0 881
Los Angeles 0 2,000 2,000
Riverside 0 17 17
San Diego 431 3,912 4,343
San Francisco 10 0 10
Santa Barbara 1 299 300
Santa Cruz 0 324 324
Lawrence Berkeley 0 774 774
Lawrence Livermore 0 186 186
Los Alamos 0 0 0
Other - UC 0 911 911
Other-Network UC n/a 3,271 3,271
_______ ______ _____
1,734 20,059 21,793
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.4
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) 7:03
Average session length (minutes:seconds) 12:36
Longest session recorded (minutes:seconds) 136:34
Average number of searches completed per session 1.9
Retrievals per search - median 5.0
Retrievals per search - average 212.9
Retrievals per search - standard deviation 1490.5
Percent of searches completed with 0 results 29.1%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 81.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,380 29.3%
DISPLAY (excluding automatic displays) 3,032 37.3%
BROWSE 2 0.0%
SELECT 2 0.0%
HELP 48 0.6%
EXPLAIN 60 0.7%
SET/RESET 894 11.0%
SHOW 12 0.1%
ADD ON (AND, OR, AND NOT) 227 2.8%
LOGON or LOGOFF 1,080 13.3%
COMMENT 0 0.0%
SAVE 63 0.8%
USE 0 0.0%
OTHER 329 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 1,117 41.8% 277 24.8% 14 76.3 271.2
TITLE WORD 541 20.3% 281 51.9% 4 63.5 280.3
EXACT TITLE 21 0.8% 12 57.1% 1 5.1 12.0
JOURNAL 60 2.2% 30 50.0% 502 2562.0 5658.6
EXACT JOURNAL 25 0.9% 14 56.0% 288 383.4 461.5
SUBJECT 87 3.3% 19 21.8% 29 1415.8 5074.5
EXACT SUBJECT 5 0.2% 0 0.0% 5 454.4 1001.5
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 546 20.4% 102 18.7% 21 606.3 2413.2
SUBFILE 20 0.7% 0 0.0% 34 53.2 54.2
FORM 12 0.4% 0 0.0% 30 67.4 88.9
DATE 84 3.1% 25 29.8% 13 41.6 72.9
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 0.2% 1 16.7% 16 18.4 18.5
CONFERENCE 1 0.0% 0 0.0% 8 8.0 0.0
LANGUAGE 16 0.6% 0 0.0% 51 62.1 56.8
CHEMICAL NAME 47 1.8% 22 46.8% 10 290.6 703.2
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 76 2.8% 14 18.4% 9 77.4 341.3
EXACT PE 5 0.2% 0 0.0% 6 11.8 13.3
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% 20 20.0 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 294 12.5% 105 35.7% 6 38.8 103.3
Single 2,064 87.5% 585 28.3% 16 359.3 1955.8
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% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.1%
SHORT 81.6%
LONG 2.7%
TAGS 0.1%
FIELDS 5.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 44.9%
2. First word of command is invalid 28.3%
3. FIND command with invalid index name 5.1%
4. DISPLAY command contains invalid word 4.0%
5. Max. # of ports to a Z39 db are in use 3.9%
6. Valid command at an inappropriate time 0.9%
7. Search term missing from search command 0.9%
8. SET DB command entered w/o modifier 0.7%
9. DISPLAY command - no FIND results 0.7%
10. DISPLAY command-record numbers too large 0.7%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 16.7%
2. INSPEC DATABASES 11.7%
3. INSPEC BACKFILES 11.7%
4. INDEXES (INSPEC DBS) 10.0%
5. GUIDE (INSPEC DBS) 5.0%
6. CHEMICAL NAMES 5.0%
7. 1752 5.0%
8. MAIL 3.3%
9. LOCATE (INS/PSY DBS) 3.3%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.3%
11. All others 25.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.1%
2. First word of command is invalid 15.7%
3. FIND command with invalid index name 7.4%
4. DISPLAY command - last of >1 screen 7.4%
5. NS command - no next screen 5.6%
6. FIND command with zero results 5.6%
7. Multi-index search with zero results 4.6%
8. DISPLAY command - middle of >1 screen 3.7%
9. Add-on without index name after verb 2.8%
10. FIND command retrieves >1 book 2.8%
11. All others 21.3%
Ten most frequent SHOW requests:
1. HISTORY 58.3%
2. INSPEC NEWS 25.0%
3. INSPEC LOADING STATISTICS 8.3%
4. SYSTEM NEWS 8.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)