MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/20/01 through 01/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 11 431 442
Davis 46 2 48
Irvine 92 0 92
Los Angeles 8 132 140
Riverside 2 13 15
San Diego 80 208 288
San Francisco 19 0 19
Santa Barbara 26 64 90
Santa Cruz 8 26 34
Lawrence Berkeley 0 61 61
Lawrence Livermore 0 39 39
Los Alamos 0 0 0
Other - UC 0 34 34
Other-Network UC n/a 415 415
_______ ______ _____
292 1,425 1,717
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,106 2,822 23,528
INS90 222 463 2,621
INS85 150 300 1,857
INS80 120 220 1,090
INS69 119 310 2,832
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 35 78 1,329
2-4 a.m. 46 151 866
4-6 a.m. 22 54 395
6-8 a.m. 44 142 698
8-10 a.m. 155 351 2,836
10-12 a.m. 290 655 4,582
12-2 p.m. 282 581 2,813
2-4 p.m. 332 827 7,177
4-6 p.m. 253 705 6,069
6-8 p.m. 133 257 2,412
8-10 p.m. 66 179 1,618
10-12 p.m. 59 135 1,133
__________ __________ __________ _________________
Total: 1,717 4,115 31,928
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 48 983 1,031
Davis 99 6 105
Irvine 270 0 270
Los Angeles 11 339 350
Riverside 6 33 39
San Diego 291 505 796
San Francisco 145 0 145
Santa Barbara 34 134 168
Santa Cruz 16 41 57
Lawrence Berkeley 0 123 123
Lawrence Livermore 0 135 135
Los Alamos 0 0 0
Other - UC 0 103 103
Other-Network UC n/a 793 793
_______ ______ _____
920 3,195 4,115
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 226 7,376 7,602
Davis 700 44 744
Irvine 3,615 0 3,615
Los Angeles 28 3,351 3,379
Riverside 8 77 85
San Diego 951 3,425 4,376
San Francisco 963 0 963
Santa Barbara 526 1,495 2,021
Santa Cruz 19 318 337
Lawrence Berkeley 0 1,493 1,493
Lawrence Livermore 0 1,153 1,153
Los Alamos 0 0 0
Other - UC 0 627 627
Other-Network UC n/a 5,533 5,533
_______ ______ _____
7,036 24,892 31,928
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 5.4
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) 6:12
Average session length (minutes:seconds) 11:56
Longest session recorded (minutes:seconds) 533:53
Average number of searches completed per session 2.4
Retrievals per search - median 7.0
Retrievals per search - average 1060.6
Retrievals per search - standard deviation 17824
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 5.9%
Percent of long searches completed
(includes partial results) 72.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,733 31.3%
DISPLAY (excluding automatic displays) 4,360 36.5%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 73 0.6%
EXPLAIN 135 1.1%
SET/RESET 936 7.8%
SHOW 34 0.3%
ADD ON (AND, OR, AND NOT) 382 3.2%
LOGON or LOGOFF 1,607 13.5%
COMMENT 0 0.0%
SAVE 174 1.5%
USE 6 0.1%
OTHER 498 4.2%
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 1,758 42.7% 371 21.1% 19 114.2 829.2
TITLE WORD 991 24.1% 391 39.5% 5 89.3 566.2
EXACT TITLE 11 0.3% 9 81.8% 3 3.0 1.4
JOURNAL 95 2.3% 36 37.9% 145 1005.9 2204.2
EXACT JOURNAL 19 0.5% 12 63.2% 370 12320.6 29168.6
SUBJECT 224 5.4% 77 34.4% 19 624.2 1795.4
EXACT SUBJECT 4 0.1% 0 0.0% 12 3859.0 7701.3
THESAURUS 3 0.1% 0 0.0% 8 3672.3 6347.7
EXACT THESAURUS 14 0.3% 0 0.0% 2,995 2194.5 1572.1
KEYWORD 679 16.5% 132 19.4% 33 4051.1 35329.6
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 47 1.1% 8 17.0% 32 314.5 1086.3
DATE 41 1.0% 5 12.2% 10 76.1 135.7
ADDED 11 0.3% 6 54.5% 11 11.2 3.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 45 1.1% 13 28.9% 9 112.6 516.4
CONFERENCE 31 0.8% 17 54.8% 106 932.1 1656.6
LANGUAGE 4 0.1% 0 0.0% 19 20.3 18.6
CHEMICAL NAME 10 0.2% 3 30.0% 42 94.9 106.7
ISSN 1 0.0% 1 100% 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 122 3.0% 24 19.7% 5 86.3 385.6
EXACT PE 2 0.0% 0 0.0% 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 2 0.0% 0 0.0% 3,444 3444.0 4839.4
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 431 11.7% 139 32.3% 7 129.8 793.1
Single 3,240 88.3% 825 25.5% 20 1115.6 16979.1
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 3.9%
SHORT 82.8%
LONG 1.4%
TAGS 0.0%
FIELDS 6.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.7%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 43.1%
2. First word of command is invalid 25.2%
3. FIND command with invalid index name 6.0%
4. Max. # of ports to a Z39 db are in use 4.0%
5. DISPLAY command contains invalid word 3.1%
6. DISPLAY command-record numbers too large 1.5%
7. NS of SHOW/EXP command-no next screen 1.5%
8. Search term missing from search command 1.4%
9. PS command - no previous screen 1.2%
10. Invalid SET DB INS command issued 1.2%
11. All others 11.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.8%
2. INSPEC DATABASES 14.1%
3. INSPEC BACKFILES 7.4%
4. GUIDE (INSPEC DBS) 6.7%
5. INDEXES (INSPEC DBS) 6.7%
6. LOCATE (INS/PSY DBS) 5.2%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 5.2%
8. ADDON SEARCH 4.4%
9. MAIL 3.7%
10. Unrecognized term 3.7%
11. All others 28.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.6%
2. First word of command is invalid 21.2%
3. DISPLAY command - middle of >1 screen 7.7%
4. FIND command with zero results 6.3%
5. FIND command retrieves >1 book 5.8%
6. DISPLAY command-complete in one screen 3.8%
7. NS command - no next screen 3.4%
8. DISPLAY command-first of >1 screen 3.4%
9. FIND command with invalid index name 2.9%
10. DISPLAY command - last of >1 screen 2.9%
11. All others 19.2%
Ten most frequent SHOW requests:
1. HISTORY 64.7%
2. INSPEC LOADING STATISTICS 8.8%
3. MAIL STATUS 8.8%
4. SEARCH 5.9%
5. UPDATE 5.9%
6. SETTINGS (INS/PSY DBS) 2.9%
7. INSPEC NEWS 2.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)