MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/01/99 through 11/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,197 2,684 4,881
Davis 1,777 176 1,953
Irvine 796 0 796
Los Angeles 534 371 905
Riverside 487 241 728
San Diego 123 412 535
San Francisco 338 5 343
Santa Barbara 259 180 439
Santa Cruz 1,291 570 1,861
Lawrence Berkeley 0 24 24
Lawrence Livermore 0 108 108
Los Alamos 0 0 0
Other - UC 27 312 339
Other-Network UC n/a 1,688 1,688
_______ ______ _____
7,829 6,771 14,600
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 13,294 48,531 516,087
BIO88 1,306 3,129 24,964
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 128 497 3,257
2-4 a.m. 66 257 2,621
4-6 a.m. 76 262 2,101
6-8 a.m. 184 679 12,708
8-10 a.m. 1,282 3,836 32,740
10-12 a.m. 2,491 7,555 79,097
12-2 p.m. 2,728 9,418 100,399
2-4 p.m. 3,097 11,987 117,513
4-6 p.m. 2,352 8,480 85,803
6-8 p.m. 1,130 4,232 52,280
8-10 p.m. 686 2,970 38,482
10-12 p.m. 380 1,487 14,050
__________ __________ __________ _________________
Total: 14,600 51,660 541,051
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 9,187 9,399 18,586
Davis 7,427 531 7,958
Irvine 2,973 0 2,973
Los Angeles 1,928 1,112 3,040
Riverside 1,644 663 2,307
San Diego 632 1,286 1,918
San Francisco 1,024 15 1,039
Santa Barbara 946 689 1,635
Santa Cruz 5,568 1,576 7,144
Lawrence Berkeley 0 79 79
Lawrence Livermore 0 206 206
Los Alamos 0 0 0
Other - UC 59 735 794
Other-Network UC n/a 3,981 3,981
_______ ______ _____
31,388 20,272 51,660
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 96,525 111,201 207,726
Davis 100,997 3,783 104,780
Irvine 32,572 0 32,572
Los Angeles 17,265 13,574 30,839
Riverside 12,909 6,347 19,256
San Diego 3,971 10,582 14,553
San Francisco 5,715 38 5,753
Santa Barbara 8,892 9,502 18,394
Santa Cruz 42,353 18,663 61,016
Lawrence Berkeley 0 810 810
Lawrence Livermore 0 1,064 1,064
Los Alamos 0 0 0
Other - UC 1,223 7,849 9,072
Other-Network UC n/a 35,216 35,216
_______ ______ _____
322,422 218,629 541,051
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.5
Standard deviation in seconds 8.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:49
Average session length (minutes:seconds) 13:51
Longest session recorded (minutes:seconds) 783:16
Average number of searches completed per session 3.5
Retrievals per search - median 13.0
Retrievals per search - average 1313.8
Retrievals per search - standard deviation 12558
Percent of searches completed with 0 results 22.4%
Percent of searches entered that are long 1.1%
Percent of long searches completed
(includes partial results) 43.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 45,876 29.4%
DISPLAY (excluding automatic displays) 62,260 39.9%
BROWSE 3 0.0%
HELP 2,996 1.9%
EXPLAIN 2,931 1.9%
SET/RESET 5,350 3.4%
SHOW 593 0.4%
ADD ON (AND, OR, AND NOT) 5,784 3.7%
LOGON or LOGOFF 19,203 12.3%
COMMENT 6 0.0%
SAVE 5,028 3.2%
USE 38 0.0%
OTHER 5,993 3.8%
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 12,289 24.9% 2,541 20.7% 22 144.1 461.7
TITLE WORD 7,116 14.4% 2,588 36.4% 13 761.5 7579.5
EXACT TITLE 429 0.9% 246 57.3% 2 173.2 804.1
KEYWORD 23,223 47.0% 4,274 18.4% 37 1751.4 14097.1
JOURNAL 1,969 4.0% 824 41.8% 701 7184.9 22009.7
EXACT JOURNAL 758 1.5% 348 45.9% 774 2709.4 5179.4
SOURCE 42 0.1% 30 71.4% 191 342.3 380.7
CONFERENCE 5 0.0% 4 80.0% 120 120.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 17 0.0% 0 0.0% 10 2018.3 8046.8
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 134 134.0 0.0
PUBLICATION TYPE 14 0.0% 4 28.6% 4 248.1 514.4
DATE 157 0.3% 44 28.0% 11 102.3 274.4
LANGUAGE 32 0.1% 2 6.3% 129 740.9 1156.1
ADDED 5 0.0% 1 20.0% 23 22.5 5.3
ARTICLE 2 0.0% 1 50.0% 597 597.0 0.0
AUTHOR AFFIL. 544 1.1% 53 9.7% 6,361 25060.8 73922.3
ACCESSION NO. 4 0.0% 3 75.0% 1 1.0 0.0
ISSN 1 0.0% 0 0.0% 5,755 5755.0 0.0
ISBN 1 0.0% 0 0.0% 38 38.0 0.0
PERIODICAL 1,277 2.6% 290 22.7% 6 340.0 2111.7
EXACT PE 227 0.5% 33 14.5% 3 50.2 210.8
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 1,288 2.6% 214 16.6% 28 1941.4 10644.9
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 3,781 8.3% 1,157 30.6% 8 497.2 3378.8
Single 41,630 91.7% 9,110 21.9% 36 1833.2 15350.7
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:
CONCEPT CODES 3 100% 0 0.0% 12 10.0 3.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 90.4%
LONG 1.3%
TAGS 0.3%
FIELDS 1.6%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 12.4%
Ten most frequent errors:
1. First word of command is invalid 31.9%
2. NS command - no next screen 31.8%
3. FIND command with invalid index name 9.4%
4. PS command - no previous screen 5.3%
5. DISPLAY command contains invalid word 3.7%
6. Valid command at an inappropriate time 2.2%
7. Search term missing from search command 2.0%
8. NS of SHOW/EXP command-no next screen 1.4%
9. Index invalid in current database 1.3%
10. DISPLAY command-record numbers too large 1.1%
11. All others 10.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 24.1%
2. GUIDE 17.7%
3. FIND 9.5%
4. COMMANDS 6.9%
5. Unrecognized term 5.6%
6. INDEXES 4.5%
7. BIOSIS DATABASE 4.1%
8. ADDON SEARCH 3.0%
9. DISPLAY 2.3%
10. MAIL 2.2%
11. All others 20.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.6%
2. First word of command is invalid 16.2%
3. FIND command with invalid index name 8.5%
4. DISPLAY command-first of >1 screen 7.7%
5. DISPLAY command - middle of >1 screen 5.5%
6. FIND command retrieves >1 book 5.0%
7. DISPLAY command-complete in one screen 4.3%
8. FIND command with zero results 4.3%
9. DISPLAY command - last of >1 screen 3.1%
10. NS command - no next screen 2.5%
11. All others 22.3%
Ten most frequent SHOW requests:
1. HISTORY 34.8%
2. SEARCH 25.2%
3. MAIL STATUS 7.4%
4. BIOSIS NEWS 6.5%
5. SETTINGS 5.1%
6. GLOSSARY 3.1%
7. MAIL SETTINGS 2.7%
8. SUPERTAXA SETTING 2.6%
9. DISEASE INDEX 1.7%
10. PARTS STRUCTURES SYSTEMS 1.5%
11. All others 9.4%