MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 784 2,371 3,155
Davis 1,512 154 1,666
Irvine 496 0 496
Los Angeles 336 284 620
Riverside 222 409 631
San Diego 145 254 399
San Francisco 367 8 375
Santa Barbara 108 293 401
Santa Cruz 307 312 619
Lawrence Berkeley 0 33 33
Lawrence Livermore 0 38 38
Los Alamos 0 0 0
Other - UC 43 218 261
Other-Network UC n/a 1,605 1,605
_______ ______ _____
4,320 5,979 10,299
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 9,228 30,656 297,426
BIO88 1,071 2,724 31,304
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 109 354 3,741
2-4 a.m. 71 194 836
4-6 a.m. 47 119 1,463
6-8 a.m. 209 677 9,120
8-10 a.m. 1,047 2,923 22,538
10-12 a.m. 2,019 6,638 54,574
12-2 p.m. 1,771 5,611 61,053
2-4 p.m. 2,329 7,793 81,276
4-6 p.m. 1,732 5,556 54,985
6-8 p.m. 543 1,850 22,373
8-10 p.m. 224 891 8,156
10-12 p.m. 198 774 8,615
__________ __________ __________ _________________
Total: 10,299 33,380 328,730
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 2,902 7,635 10,537
Davis 5,693 528 6,221
Irvine 1,637 0 1,637
Los Angeles 1,059 904 1,963
Riverside 681 1,618 2,299
San Diego 464 775 1,239
San Francisco 1,268 31 1,299
Santa Barbara 444 1,140 1,584
Santa Cruz 1,115 820 1,935
Lawrence Berkeley 0 94 94
Lawrence Livermore 0 77 77
Los Alamos 0 0 0
Other - UC 136 483 619
Other-Network UC n/a 3,876 3,876
_______ ______ _____
15,399 17,981 33,380
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 31,002 83,458 114,460
Davis 54,965 3,366 58,331
Irvine 14,368 0 14,368
Los Angeles 8,507 8,430 16,937
Riverside 3,991 32,143 36,134
San Diego 1,769 5,722 7,491
San Francisco 11,386 323 11,709
Santa Barbara 3,733 10,243 13,976
Santa Cruz 7,078 13,833 20,911
Lawrence Berkeley 0 1,552 1,552
Lawrence Livermore 0 1,103 1,103
Los Alamos 0 0 0
Other - UC 573 6,246 6,819
Other-Network UC n/a 24,939 24,939
_______ ______ _____
137,372 191,358 328,730
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.6
Standard deviation in seconds 6.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 7:50
Average session length (minutes:seconds) 13:03
Longest session recorded (minutes:seconds) 530:01
Average number of searches completed per session 3.2
Retrievals per search - median 10.0
Retrievals per search - average 1108.7
Retrievals per search - standard deviation 16617
Percent of searches completed with 0 results 22.8%
Percent of searches entered that are long 0.9%
Percent of long searches completed
(includes partial results) 51.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 29,404 30.5%
DISPLAY (excluding automatic displays) 36,135 37.5%
BROWSE 25 0.0%
HELP 1,174 1.2%
EXPLAIN 1,210 1.3%
SET/RESET 4,427 4.6%
SHOW 363 0.4%
ADD ON (AND, OR, AND NOT) 3,976 4.1%
LOGON or LOGOFF 12,331 12.8%
COMMENT 0 0.0%
SAVE 3,484 3.6%
USE 51 0.1%
OTHER 3,737 3.9%
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 10,493 32.8% 2,004 19.1% 19 131.5 501.9
TITLE WORD 4,383 13.7% 1,545 35.2% 10 479.3 4243.9
EXACT TITLE 246 0.8% 124 50.4% 1 201.5 1293.9
KEYWORD 12,698 39.7% 2,440 19.2% 37 2479.3 28168.1
JOURNAL 1,184 3.7% 452 38.2% 474 5165.8 15869.6
EXACT JOURNAL 416 1.3% 163 39.2% 448 2095.6 4308.0
SOURCE 23 0.1% 10 43.5% 53 2027.4 6754.3
CONFERENCE 5 0.0% 1 20.0% 7,734 12844.0 16994.7
BIOSYS NAMES 9 0.0% 2 22.2% 2 39.3 83.7
BIOSYS CODES 26 0.1% 3 11.5% 48 399.3 621.1
SUPERTAXA 59 0.2% 2 3.4% 33 706.8 2070.9
MAJ CONCEPT CDES 5 0.0% 0 0.0% 41 2476.0 4363.0
CONCEPT CODES 51 0.2% 4 7.8% 302 13584.3 61401.5
PUBLICATION TYPE 107 0.3% 10 9.3% 25 635.5 4488.7
DATE 802 2.5% 138 17.2% 9 102.9 565.2
LANGUAGE 35 0.1% 0 0.0% 146 755.5 2428.6
ADDED 8 0.0% 4 50.0% 15 18.3 12.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 169 0.5% 32 18.9% 52 8003.8 30695.4
ACCESSION NO. 88 0.3% 54 61.4% 1 1.0 0.0
ISSN 9 0.0% 2 22.2% 1,960 2958.4 3353.9
ISBN 2 0.0% 1 50.0% 80 80.0 0.0
PERIODICAL 964 3.0% 249 25.8% 5 360.7 2310.3
EXACT PE 135 0.4% 26 19.3% 3 24.7 117.5
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 78 0.2% 19 24.4% 41 144.1 325.6
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 2,617 9.0% 697 26.6% 7 102.7 549.1
Single 26,546 91.0% 5,845 22.0% 29 1648.8 20542.4
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 25 100% 11 44.0% 11 8.4 4.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 88.5%
LONG 1.6%
TAGS 0.3%
FIELDS 1.6%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 2.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. NS command - no next screen 36.4%
2. First word of command is invalid 29.0%
3. FIND command with invalid index name 9.9%
4. PS command - no previous screen 3.5%
5. DISPLAY command contains invalid word 3.4%
6. Search term missing from search command 1.9%
7. Valid command at an inappropriate time 1.8%
8. Index invalid in current database 1.5%
9. DATE search with unrecognized word 1.5%
10. Command contains escape or arrow key 1.2%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.0%
2. LOCATE (BIO DB) 11.6%
3. FIND 11.2%
4. INDEXES 6.8%
5. COMMANDS 6.6%
6. Unrecognized term 6.4%
7. BIOSIS DATABASE 6.0%
8. ADDON SEARCH 3.3%
9. DISPLAY 2.6%
10. MAIL 2.3%
11. All others 26.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.8%
2. First word of command is invalid 15.4%
3. FIND command with invalid index name 8.1%
4. FIND command retrieves >1 book 5.4%
5. DISPLAY command-first of >1 screen 4.8%
6. FIND command with zero results 4.7%
7. DISPLAY command - middle of >1 screen 4.2%
8. DISPLAY command - last of >1 screen 2.9%
9. DISPLAY command-complete in one screen 2.8%
10. NS command - no next screen 2.6%
11. All others 25.3%
Ten most frequent SHOW requests:
1. HISTORY 49.1%
2. SEARCH 17.8%
3. MAIL STATUS 10.3%
4. GLOSSARY 5.0%
5. BIOSIS NEWS 4.4%
6. SETTINGS 1.6%
7. SYSTEM NEWS 1.6%
8. DISPLAY 1.6%
9. DATABASES 1.6%
10. SUPERTAXA HIERARCHICAL TABLE 0.9%
11. All others 6.3%