MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/01/01 through 01/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 35 1,558 1,593
Davis 212 9 221
Irvine 363 0 363
Los Angeles 28 721 749
Riverside 17 55 72
San Diego 290 751 1,041
San Francisco 100 0 100
Santa Barbara 73 299 372
Santa Cruz 17 99 116
Lawrence Berkeley 0 314 314
Lawrence Livermore 0 127 127
Los Alamos 0 0 0
Other - UC 1 162 163
Other-Network UC n/a 1,572 1,572
_______ ______ _____
1,136 5,667 6,803
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 4,170 10,288 85,334
INS90 969 1,831 9,829
INS85 631 1,076 6,072
INS80 545 951 4,491
INS69 488 1,127 8,361
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 128 277 3,298
2-4 a.m. 144 359 2,719
4-6 a.m. 77 204 1,533
6-8 a.m. 284 776 3,924
8-10 a.m. 647 1,508 10,332
10-12 a.m. 1,168 2,530 19,614
12-2 p.m. 1,087 2,410 15,506
2-4 p.m. 1,329 3,049 25,368
4-6 p.m. 906 2,104 16,250
6-8 p.m. 508 973 7,892
8-10 p.m. 283 553 4,544
10-12 p.m. 242 530 3,107
__________ __________ __________ _________________
Total: 6,803 15,273 114,087
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 86 3,223 3,309
Davis 452 18 470
Irvine 948 0 948
Los Angeles 49 1,771 1,820
Riverside 29 153 182
San Diego 1,058 1,593 2,651
San Francisco 430 0 430
Santa Barbara 115 811 926
Santa Cruz 33 170 203
Lawrence Berkeley 0 584 584
Lawrence Livermore 0 400 400
Los Alamos 0 0 0
Other - UC 2 502 504
Other-Network UC n/a 2,846 2,846
_______ ______ _____
3,202 12,071 15,273
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 500 24,611 25,111
Davis 3,049 64 3,113
Irvine 9,827 0 9,827
Los Angeles 618 14,022 14,640
Riverside 153 767 920
San Diego 5,066 10,686 15,752
San Francisco 2,547 0 2,547
Santa Barbara 1,140 8,474 9,614
Santa Cruz 292 1,194 1,486
Lawrence Berkeley 0 3,730 3,730
Lawrence Livermore 0 3,403 3,403
Los Alamos 0 0 0
Other - UC 0 3,542 3,542
Other-Network UC n/a 20,402 20,402
_______ ______ _____
23,192 90,895 114,087
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 5.5
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
_________________________________________
Median session length (minutes:seconds) 6:19
Average session length (minutes:seconds) 11:58
Longest session recorded (minutes:seconds) 533:53
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1327.9
Retrievals per search - standard deviation 20114
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 76.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 13,709 31.0%
DISPLAY (excluding automatic displays) 15,519 35.1%
BROWSE 5 0.0%
SELECT 2 0.0%
HELP 326 0.7%
EXPLAIN 534 1.2%
SET/RESET 3,932 8.9%
SHOW 139 0.3%
ADD ON (AND, OR, AND NOT) 1,563 3.5%
LOGON or LOGOFF 5,968 13.5%
COMMENT 0 0.0%
SAVE 714 1.6%
USE 11 0.0%
OTHER 1,777 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 6,649 43.7% 1,576 23.7% 15 90.7 582.8
TITLE WORD 3,183 20.9% 1,314 41.3% 6 95.4 543.0
EXACT TITLE 66 0.4% 48 72.7% 3 23.3 52.4
JOURNAL 441 2.9% 170 38.5% 108 2998.7 11565.5
EXACT JOURNAL 95 0.6% 47 49.5% 320 3462.9 11934.6
SUBJECT 610 4.0% 195 32.0% 17 572.2 2061.9
EXACT SUBJECT 38 0.2% 5 13.2% 83 2894.3 5440.4
THESAURUS 21 0.1% 9 42.9% 19 4578.2 5644.0
EXACT THESAURUS 31 0.2% 0 0.0% 3,149 3817.3 2737.6
KEYWORD 2,740 18.0% 522 19.1% 30 4566.1 37269.9
SUBFILE 3 0.0% 0 0.0% 40 96.0 117.5
FORM 216 1.4% 44 20.4% 14 102.9 533.4
DATE 207 1.4% 55 26.6% 35 2227.6 5120.3
ADDED 59 0.4% 41 69.5% 13 18.7 17.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 210 1.4% 40 19.0% 10 140.3 665.1
CONFERENCE 77 0.5% 27 35.1% 107 2479.8 9976.8
LANGUAGE 12 0.1% 1 8.3% 26 24.6 26.8
CHEMICAL NAME 57 0.4% 11 19.3% 8 134.3 295.4
ISSN 10 0.1% 4 40.0% 440 3024.5 6333.6
ISBN 2 0.0% 2 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 457 3.0% 97 21.2% 5 91.3 697.3
EXACT PE 41 0.3% 6 14.6% 3 26.3 86.5
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 6 0.0% 1 16.7% 22 1398.0 3056.8
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 1,648 12.2% 594 36.0% 7 418.6 2224.9
Single 11,881 87.8% 3,019 25.4% 19 1347.2 18890.1
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 5 100% 2 40.0% 1 2.3 2.3
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 83.4%
LONG 2.1%
TAGS 0.1%
FIELDS 5.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 1.1%
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 41.5%
2. First word of command is invalid 26.5%
3. FIND command with invalid index name 6.0%
4. Max. # of ports to a Z39 db are in use 3.9%
5. DISPLAY command contains invalid word 3.2%
6. DISPLAY command - no FIND results 1.7%
7. Search term missing from search command 1.5%
8. PS command - no previous screen 1.3%
9. NS of SHOW/EXP command-no next screen 1.3%
10. Add-on search, no index name after verb 1.0%
11. All others 12.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.5%
2. INSPEC DATABASES 14.4%
3. GUIDE (INSPEC DBS) 9.0%
4. INSPEC BACKFILES 7.9%
5. INDEXES (INSPEC DBS) 7.3%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 5.6%
7. LOCATE (INS/PSY DBS) 4.9%
8. Unrecognized term 4.3%
9. DATABASES 3.2%
10. 1752 2.8%
11. All others 25.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.6%
2. First word of command is invalid 13.8%
3. DISPLAY command - middle of >1 screen 6.9%
4. FIND command with zero results 5.8%
5. FIND command with invalid index name 5.0%
6. NS command - no next screen 4.1%
7. FIND command retrieves >1 book 4.0%
8. DISPLAY command-first of >1 screen 4.0%
9. DISPLAY command - last of >1 screen 4.0%
10. DISPLAY command-complete in one screen 2.8%
11. All others 23.1%
Ten most frequent SHOW requests:
1. HISTORY 65.9%
2. MAIL STATUS 8.7%
3. INSPEC LOADING STATISTICS 8.0%
4. INSPEC NEWS 5.8%
5. SEARCH 4.3%
6. SETTINGS (INS/PSY DBS) 2.2%
7. SYSTEM NEWS 1.4%
8. UPDATE 1.4%
9. FORM NAMES (INSPEC DBS) 0.7%
10. GLOSSARY 0.7%
11. All others 0.7%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)