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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
% \- p3 c! P& y" B  c; [; Qto do-business
& P0 @8 R% E( B/ s  {6 r; B rt random 3608 k. i( }: i3 h4 ?- g& S
fd 1
. \9 L, s3 X* ^ ifelse(other turtles-here != nobody)[
/ p, O" E: i/ E( l, E2 ?8 z5 s   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
: M8 J2 G# U$ y( H0 M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ s9 ^7 D9 I7 l8 D* C, u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% h' s( |+ J* H
   set [trade-record-one-len] of self length [trade-record-one] of self
" g8 S" \0 T& O   set trade-record-current( list (timer) (random money-upper-limit))
+ [5 U8 q$ v5 Q( F+ o# P5 {4 q/ k
4 c9 E# q) Z+ _* Z6 D- _+ r4 W  E问题的提示如下:
' P; T! ~5 q5 z$ i# _& W; o) z, e6 ^0 G; k" h/ x$ r
error while turtle 50 running OF in procedure DO-BUSINESS
5 e8 D; H9 O! j9 c7 w7 g6 d  called by procedure GO& c0 e8 `1 T6 v
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 R) f8 O6 V; l( \# d: v
(halted running of go)) h" d* O9 l+ ]2 H  X+ m

2 I: [7 s7 x' G( B- G3 y这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
& q" w& ?) L& W+ b. G1 ]另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教  k5 o5 r$ j+ b% E* {& h, |
globals[
: l6 K1 M$ R4 Z4 Mxmax) G. n% x" ?$ Q  A9 j) R! L
ymax' I8 l: E0 W; G7 L' T$ W
global-reputation-list$ n% R* G8 p6 A4 v& v
2 x/ c4 H- ^5 v3 \4 s  |
;;
每一个turtle的全局声誉都存在此LIST; D+ ]7 s5 H9 \4 E  r8 |3 Q
credibility-list% b1 D8 p, N2 k9 Z- u# H3 y
;;
每一个turtle的评价可信度. d* K2 e# l- w: f- n; `; u# e
honest-service
+ e$ h! J; H' R6 U4 wunhonest-service
5 ?9 |4 {# E; h' Eoscillation
* O8 Q8 E  X+ R/ j5 H1 K7 T0 Erand-dynamic6 w" a6 [$ g% X  W: o; ^
]: a. z- R' `3 A& w2 n
! X( Q' P" s1 }! ~! p: u( ^6 D3 Z
turtles-own[
- z! ?" l( }8 }5 }& _) X2 i. etrade-record-all
9 n% D& I4 N, P7 ~* a7 p;;a list of lists,
trade-record-one组成
; z* `3 X- V! Y3 ]4 T, l3 d0 dtrade-record-one1 H/ Z0 u* [* Q' Z% x( B$ D2 F7 \
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: x1 o2 d( J# k2 b3 c

9 D; l7 x! I5 j7 Z+ H;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
9 k6 \0 K! w9 Ytrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
! n: G) z2 O  N# y! w0 v% l- \credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list8 s/ w. @) N4 N5 P5 ?- X
neighbor-total9 r3 T- s! R2 U5 M# X, w8 P
;;
记录该turtle的邻居节点的数目, ^+ G( k+ b+ q- ~5 `4 h( v
trade-time
0 e. ?" p( X/ r6 v' ?! w/ f;;
当前发生交易的turtle的交易时间5 }  e! C+ Z! }* [" q
appraise-give: J+ g! F' i3 [3 g3 q9 z4 E
;;
当前发生交易时给出的评价
! E4 l4 t  _. r. U& _appraise-receive& a) P) z! ~' g- q$ u. F
;;
当前发生交易时收到的评价
0 b8 x/ `0 u3 ^appraise-time
% \* K: ?; F' j1 \6 n1 k;;
当前发生交易时的评价时间
- X  W1 b% w5 {; |) r, {local-reputation-now;;此次交易后相对于对方turtle的局部声誉# N  M- }) n8 B
trade-times-total5 P2 L6 G/ m! X" o5 }) Z
;;
与当前turtle的交易总次数
7 K% D# `, c5 o, \trade-money-total  \6 t, a- F3 G* t
;;
与当前turtle的交易总金额# u; R! ~* c2 D( b
local-reputation: q, q  ~  s5 j
global-reputation* T2 |! H% O; `) u( F
credibility2 E( M7 U7 T( Y" k7 f8 q) Q; X
;;
评价可信度,每次交易后都需要更新
: d  c' a7 e0 H8 ucredibility-all
& }' m) A9 r+ a! ^6 g;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据# O: L7 \0 W" V0 s# X, J
+ e% I% L5 {  i' }
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5# e# g( {' g5 d
credibility-one+ a- V/ k; _" e+ A. K
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
/ L! F3 n( }3 j2 M; J. ^global-proportion) i' q/ S) ~3 _6 K) {
customer
  q# f0 D& M2 R! ecustomer-no! }, H6 @$ y5 I: {# U4 g
trust-ok4 X) o4 X- L  E" ^: \# {& J
trade-record-one-len;;trade-record-one的长度
. G# X2 j1 u2 `7 c3 `7 G]8 w0 X, b; D. G( y: P( N
# n# [5 l& F( s# T: W, e1 z
;;setup procedure
) _% ~4 c% N- W4 n2 A* _
% P, O" s$ {8 N- ?" _/ l; Nto setup( t4 e% l3 h2 {; ~
  @3 ^; f6 r, v9 z# O& A
ca
. V, ^  c9 j5 P% w5 v" M+ J. _
) Q3 I# _6 e, {
initialize-settings

1 d5 S. K1 [* \8 A: a/ W$ P$ [+ x5 Z
crt people [setup-turtles]
/ ]" U  z3 c' o

. A# m. H$ f' {! Qreset-timer

" n* c# v  B7 U, D; s3 h( E+ h: g$ m( ]: e. w$ O
poll-class

& l" N3 w8 i: p
, ]) f+ S! e8 j0 k4 }7 \# Z+ {setup-plots
1 O. H9 C1 w4 Y4 T' J* X
5 `8 k  Q' Q) A  Q
do-plots
. z2 \1 p; F) ]) o3 _( j
end
( y: E7 n/ _7 [' \. _9 i
, Q& [( B4 T4 N) N) xto initialize-settings. m- o' a; @! f3 D2 L" o/ l6 a- A
" j/ }$ b% j( O( @! @
set global-reputation-list []

8 F- S8 N1 K; ^7 r2 d$ b8 S- t$ {$ B. q" {
set credibility-list n-values people [0.5]
3 }! A) W+ K) H1 Z( [0 m: v- @

, U- b  I. z" g( v3 [; hset honest-service 0

1 m" T. H, p5 s: [, k* M1 ]& R6 T. Z5 C* }' Z" L* t1 i; K, c! ~
set unhonest-service 0

! Q$ _/ w; s$ T) G$ a, F8 p. r- [2 C: ^
set oscillation 0

- x( X. s1 i# F. W- F9 ?/ @6 C; }0 J+ H4 s, C% a
set rand-dynamic 0
. v6 `% Y% r; A) P7 i
end
8 @. r8 T, f3 y0 u/ }
+ B4 d1 J0 p: i3 q6 i3 \) h# c9 Bto setup-turtles 8 v0 O( X, |& S& U
set shape "person"
/ {, q5 o9 @  ~5 z5 x8 K4 v! tsetxy random-xcor random-ycor! T* V, C# p1 @2 X7 M7 w
set trade-record-one [], F- S: v; r: S. h1 J* G1 H; V2 X

* S& F: Z& N; q4 {% wset trade-record-all n-values people [(list (? + 1) 0 0)]
7 W" I/ N7 @0 G" X$ n5 |/ v- @

+ H) U6 W% d5 `set trade-record-current []. {. ^+ @4 m9 r  g+ Y; ?+ `7 D7 F/ b
set credibility-receive []
' P5 k. n8 B! D: Y3 |set local-reputation 0.5
! Q! S/ A8 C, Q8 Bset neighbor-total 0! J- h# h/ W( X: ]+ S$ J
set trade-times-total 02 d7 R% o% o$ x6 W/ u6 i  {6 S4 N" `
set trade-money-total 0, ~1 R. `5 g0 ^) w5 c
set customer nobody) V* P' L+ P+ w" r$ G5 x# i
set credibility-all n-values people [creat-credibility]
- U2 S' M  Y$ f4 f+ g1 N+ C( vset credibility n-values people [-1]1 E; R$ d& \* D) y% h  Y7 S
get-color, p% G- j8 q5 Z) X% D( y( W' U
  C  l# a8 W' t+ ]; `
end
8 O7 j. J) w, m$ b8 z
! m, W9 C5 O" j% k9 u! }9 L: oto-report creat-credibility9 \4 _) l% w  Q$ t
report n-values people [0.5]
. S% w( h  W/ M" j( ~end% t" J- v4 x2 `; C- m6 @  ?" p# y

- a0 y9 a$ J9 t, H, Qto setup-plots$ U* P) t5 c& \! ^9 U% Q$ Z9 ]' n
, r2 G6 _8 t2 e$ k
set xmax 30
$ j1 B1 Q* d0 n0 b* W- z% l
* I: v( {  s! [7 ?) }
set ymax 1.0

# T$ f8 ~" d: i4 W( u9 ^
, u; @: a* @2 m6 s( Zclear-all-plots
% p7 r+ G# X% S

  A- i( ~$ n+ F9 _9 d% z  y5 Dsetup-plot1
# @8 K  h8 K; f; C
( }) z1 E" `( h1 O
setup-plot2

: G. J7 M/ F2 j* u9 z7 C4 a
. l# [. S( L& b9 J1 zsetup-plot3
) l0 U' g- s0 [$ [& Y
end
3 J1 I2 \' u3 }0 O% `+ M5 a9 a% R( ?- J, o& V2 P" A' h3 [
;;run time procedures
, L: ~. p7 [' I0 Y( I9 }  j+ @% r6 P- v) D& m, L
to go2 T# z! e2 d$ n' D& _

) e5 L2 ]; o9 r- C) D. X5 \ask turtles [do-business]

2 l' n9 N2 m  Jend
% ]1 `9 s  w! `1 A  P
: ?" h) T2 m+ W& Y: sto do-business
# N1 @& Z3 l  P8 L1 f% c$ Z# ^5 y( I
/ X4 x0 }9 G3 M' K
- z) g% {! D# i0 K8 N
rt random 360
7 Z( d, k2 I- s5 x7 p" B; ]

4 i8 Z  s+ [4 ?  ~fd 1
$ B) l7 O- b" f# O% ?$ X3 Z1 }
5 C3 n0 Q: _4 p! ]: s+ S
ifelse(other turtles-here != nobody)[

* ^7 [: {, g2 o8 f+ K. c4 v! [' \6 q6 w" d% T5 P- k- ?3 Y
set customer one-of other turtles-here
9 R6 x" Q2 g# r

( ]- Q% m! s$ q# K3 Z;; set [customer] of customer myself
% k% i$ [. E# u  j
' G' k# s5 F* V6 Q
set [trade-record-one] of self item (([who] of customer) - 1)
6 q) x" K: e0 K; E+ H8 x[trade-record-all]of self/ V; ?. Y; u& M4 {3 S6 T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ u7 X4 @# @2 y  {: B

+ r$ l( h2 {) l1 Gset [trade-record-one] of customer item (([who] of self) - 1)* ~2 }8 J8 Z* L5 `# ~* p
[trade-record-all]of customer

% ?& ~: a' z# O  C9 e# Z. G6 y  P: k1 \; N
set [trade-record-one-len] of self length [trade-record-one] of self

* s( L& {  r' I0 i
! `' C0 }, T+ o. jset trade-record-current( list (timer) (random money-upper-limit))
3 N+ N# [( I, N& @) d6 k( }
" d) e8 i2 S9 u( r( O- N8 B& z8 N
ask self [do-trust]
+ O! M3 w( i  g- m;;
先求ij的信任度
/ K0 f* Z$ n2 \" M) e7 u
1 h# U7 T' q, j3 Q0 Cif ([trust-ok] of self)' `2 h/ @& ~) c- H' t
;;
根据ij的信任度来决定是否与j进行交易[
5 o/ j/ x6 n! E, Y+ L: t2 \* sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 G) W! Z- W+ b
7 h" g7 K" }* e3 G9 l7 q3 p[
) N, t, E7 t. S  `# P
: c; r- M3 R, j5 ^* p: ], [' c
do-trade
( j5 i! K  f" @% ?4 z1 h1 k9 ?
1 E1 Q8 `6 G, Y% J/ V
update-credibility-ijl

" P5 D6 J6 G. Z  \
8 K* r- g* u! |% `% dupdate-credibility-list* j' V- y: H" k4 a. `, q1 Y

( `  o8 L2 U' ~$ U. y2 X# d% u4 p+ v- d! r( }
update-global-reputation-list
# q: |; S4 t0 z3 l
' L( N2 O, A: J& n) K9 y8 z3 }5 k
poll-class
4 k" Z$ O, X# S; ~: {. p( @; h2 r9 @, k
& ]% F7 X8 J' J8 r& N1 r
get-color

3 }  e2 C- s/ Z) k- L* K4 r( v" G8 k; ?* q( s: m5 o' f
]]; D3 L( v  k* m2 G' G

, P6 r8 A! W& A; S% d0 u;;
如果所得的信任度满足条件,则进行交易
$ c2 u; ?. R$ Y
0 J, g2 |+ N$ }7 _[
! F' t- G$ H+ |( R; F  \

# }6 ], V: s4 Xrt random 360
: ~4 i$ s2 `/ q% }5 |! S

6 K' J6 K7 q) w5 ffd 1

" J" ?6 f' x# C: a# F
+ E& Q* |, B  ?1 h( W; b6 v  |]

3 K$ f% b3 X% i' N' v$ Y9 d( H& M& V0 ]/ |$ A
end

- \4 Q: ]. y7 u" ]) c4 `, B
% v# ^$ i5 X' c6 x3 n9 ato do-trust ) x; u0 \0 q2 I* W: S
set trust-ok False
, ^% ?/ ]6 v( L3 M  w
4 T) B& r  p$ ^" I/ Y
: z& w; J! t9 s1 W
let max-trade-times 0) S! c7 H8 w4 a" P, r4 w5 J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: a/ _) K- r3 j' B' j
let max-trade-money 0
, P' d, ]0 u. W6 ~. hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 }) f6 z( G) k6 N, N% d+ d' ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  K0 ~9 b- }3 T- d/ p  q4 ~0 e8 P5 Z/ b3 b% S
8 u5 {: K+ L" l; g- p
get-global-proportion
* p. X9 n$ M* r* q- J( h: |let trust-value
2 R, K* n$ u9 c0 j  Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" Z" V* _$ U( E5 L% \, x* Gif(trust-value > trade-trust-value)
' b7 q0 z. L9 t  E/ |) X[set trust-ok true]
: Z# v  x3 J1 |* wend
5 s6 w/ c7 _8 e) B5 A" p5 U  |" I( h( N5 Z* W3 e) u( E( x; ]
to get-global-proportion
- M- w0 Z5 w. _" D4 f; L) j- |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* B& P' T- X8 b: t
[set global-proportion 0]) t& t+ J9 d& }, s
[let i 0( M7 A4 \8 t' w/ j. F
let sum-money 0; A4 G5 k7 b5 ~$ w) n
while[ i < people]
6 a5 a/ R1 n7 o& U& C[' ]# \6 m" Y% c* J( n( B# t5 ?/ y
if( length (item i
9 T( R" d8 y0 q8 C/ B[trade-record-all] of customer) > 3 )

. r; z# g' ^, C[
& x  k3 [& h' w* [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* A& ^$ a' F$ I. ]) W. X
]
* T3 T; Y- p# O7 ?( s; p]
5 ~' a6 O7 P: e! Tlet j 0
4 B1 o& t& u) S3 ?+ olet note 09 |# i, S: v$ l! g' t
while[ j < people]" c) O+ S5 B  d" M) _. E4 H
[1 Q8 A6 A7 g" M( n3 [% g8 `
if( length (item i
: z, @6 B7 a+ R. ^& g# v[trade-record-all] of customer) > 3 )
5 l. F; E" X3 Y* X4 _, E9 w& }/ m
[
5 H7 Z- C0 N$ }+ ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' i- a8 g: x) ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! |5 j, r7 U) L+ K( g! ^( g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  ?, J! c, I, R5 E# A8 l# g0 q0 m]6 U' z6 V6 |# s8 `  |: P* G
]- _% b  V* s: L7 x& @; F$ ~# H  P
set global-proportion note
  r& y2 r/ o  N+ p$ r! I% y]6 t: b, o% p$ {4 x  r* M9 w
end
" P7 K1 {5 d: w6 d6 K) i' J8 P2 U' p) ?3 u) u5 J7 v$ V
to do-trade9 H; D& `4 B. b; n. _& p% A8 n
;;
这个过程实际上是给双方作出评价的过程
5 r# b& b' X7 d) f8 E; J0 ]7 c& Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ M$ d% C+ Q0 e# }5 e3 B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 x) r6 r6 |0 r/ a& f+ ^7 f( |
set trade-record-current lput(timer) trade-record-current* r, ?- y; h* H6 J
;;
评价时间* B  o3 @2 D- @) Y. q8 N$ F
ask myself [
! i* m) w* W9 C) Y# _update-local-reputation
) |* l3 ^3 I, n9 dset trade-record-current lput([local-reputation] of myself) trade-record-current. n2 I" q% M5 k1 h+ E4 m
]  \8 Z5 |* b: _9 ~  p3 C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: s3 O. _5 ?" g  L- N8 P5 z  q;;
将此次交易的记录加入到trade-record-one' \' T1 L- d! ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): P( q* r3 I% Q; f0 ^# i
let note (item 2 trade-record-current )9 ^( N" u% G8 {1 o8 Z$ v" s9 D& w
set trade-record-current
- V7 \  P% R6 H: }" f" O, \" E! C(replace-item 2 trade-record-current (item 3 trade-record-current))

! w% ?! p* F$ Zset trade-record-current
- b0 @* ]' E. k& |(replace-item 3 trade-record-current note)
1 L" G( x  {! I0 a8 I8 z
8 r( m2 F" K# j0 r4 }: D8 E

+ [6 [0 \. {5 q& _+ w3 {: @ask customer [
/ s7 Z: U# ]. u9 y! Jupdate-local-reputation) M4 ~, ?/ ~' G) B
set trade-record-current+ c9 F4 Z# g) o3 k: F/ n
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; K2 p* R% Z! u# Q, R/ C' @$ {]
% [5 Q6 O% q# w% [+ ?9 ~# M5 A3 H; |7 r" o& v/ F, K  e5 _
+ E4 ?8 y& T% [$ N3 }) X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 c% n/ V* ?( n* C4 d- N, n

5 Z  ]- b- [$ N2 aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 v4 m2 K3 p( o( w6 \3 Y" `4 f* @;;
将此次交易的记录加入到customertrade-record-all
6 y4 }& w' h* ]end
5 y# F3 B* {$ `& }
; a' m: q$ {! \  Sto update-local-reputation
: o8 C% l% z3 V  L5 b& ~set [trade-record-one-len] of myself length [trade-record-one] of myself
1 n7 {; e& H& Q6 r9 W6 v
: o! E, [; A1 P( ^2 ]; c! g' R1 _4 x8 f% ]) D4 l9 |- V9 }
;;if [trade-record-one-len] of myself > 3

' j7 g& b( K9 ?update-neighbor-total
* U% m( F# Q1 I1 H' Q5 \;;
更新邻居节点的数目,在此进行
4 f- o- q5 Y" J$ \- wlet i 34 e! K0 S4 b$ \, y
let sum-time 0$ I# C! B: D) ~& \8 t
while[i < [trade-record-one-len] of myself]1 B; T4 X7 F- o/ D# v# Z1 t
[
2 L9 y6 B) q5 K. U6 qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); g7 G. J- N. Y4 D* D6 T+ {5 L
set i
+ E6 ]& `& T: n7 b( i + 1)

5 n9 S( i! ~2 x7 ~]) u( h( t: a0 L8 Q4 a, R9 Z. E/ F4 c
let j 3
5 b$ H: v& e0 X/ P$ l" `# Glet sum-money 0
6 N0 O3 a2 P# F" J7 I! l) P1 Twhile[j < [trade-record-one-len] of myself]
2 `7 H  ?6 J- W5 Q: R2 L[
+ o* A% ~) M, ]2 N! u& _. r! t& A9 aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 _& r/ t- [+ a4 R2 s% I$ c. b; mset j
2 S2 y1 F( A; p# J( j + 1)

  c; |. t; Z6 ^6 h]* O1 E' u, V1 s0 P* d; P% w
let k 3
7 Z) k: e$ D  E$ o: ilet power 0
1 o! a) w- u- w+ K/ n% Alet local 0; \2 F" r2 s  y2 F0 Z
while [k <[trade-record-one-len] of myself]
: B3 q; O+ t2 l4 `3 g[( W1 |1 i% |8 T$ t% r" z! E7 r4 ~
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
5 s# k9 N8 S4 x( iset k (k + 1); C' j$ C5 }. N2 R" \
]
2 H! q7 A, i. s( gset [local-reputation] of myself (local)! ~/ ~: a7 D  \  H  w( E+ t
end
+ U* E; @1 l, P; k
2 U0 V4 V7 ?6 |2 w3 Nto update-neighbor-total9 @( `7 t, S& @- @- u
5 ~9 l5 ^2 y+ E' d. R: b1 s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" I1 R4 x. y: Q/ C0 E( `! L
7 `2 O  z0 o- d, c

! J& J5 ~0 A0 C5 a3 R. w% yend
/ _8 C& u( @; u; T3 V
' `; j# U, v" N, T2 r* jto update-credibility-ijl
- a2 a# b3 f+ K, N( h3 |. j
6 w* p# x, m- Y; I8 b;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
& I4 C& P  M/ }& E) D# n+ Nlet l 0( W* E/ g) [0 t# U
while[ l < people ]
' y% r( @0 b' O5 p5 g) k;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价9 A1 ^9 {# s0 X+ L+ [9 L3 n
[
; \0 l/ }4 F/ s% llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 p! l9 m0 w& w! I
if (trade-record-one-j-l-len > 3)( o( D3 i; N8 g$ D3 t
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one$ d8 W0 j% v# Y* M! A( \9 n
let i 3' J7 }7 c) l2 c. l
let sum-time 0
# l* E7 M( ^; A; Vwhile[i < trade-record-one-len]5 ^$ B; v+ h- l, U1 ^
[
5 W: ^6 J: e: m7 V3 V# Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 \6 b2 }0 y; Q( x1 f! d5 A' aset i
$ o0 O, j+ l$ E* u# e# f( i + 1)
( U: Z! B; u6 d0 V
]* J& P1 t7 \5 \+ v& I0 G
let credibility-i-j-l 0
  H# s5 e$ Z* Y+ j! O1 O) j;;i
评价(jjl的评价)
; L0 _3 Q( U. `" x) O* Slet j 3/ ^" T4 V& d! V* o& a6 h# a$ ~
let k 4
. r9 W8 c# c, u! n- j3 i' Fwhile[j < trade-record-one-len]
" H7 a6 Y$ Q6 ]/ B2 H* K[
3 T/ y3 f$ Y* x6 m) m2 uwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉. U' z3 Z3 G  \/ B
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
1 W3 X; Z, w2 t) @0 Bset j" {  d+ i' E. Y
( j + 1)
+ U6 \; A( _) H5 S( J. |
]5 _  g, k6 b7 N7 S" i
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( C: Z" ?; K& e# ~" o9 o. p

+ ~) ?" h% @* l9 E2 U
# B9 K- w7 N. r, q) U& J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 A) Y; C" ]5 U; J4 [( D6 S, v
;;
及时更新il的评价质量的评价
( P$ J4 T% G+ @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 k5 T" e2 ?, o  X, j7 T
set l (l + 1)2 O% u; f3 \+ f& R% z$ V- z9 N
]
4 P. e0 M; S. j/ O/ a0 zend
3 l; x# r4 {# B0 f; U+ f1 O/ _  \# U4 g$ _
to update-credibility-list
; u, z% t" a) @% Slet i 0
; ]# O' J; \3 ~( L; E1 r; H. Y7 Gwhile[i < people]
2 @+ }; J* q' E% K2 V+ o5 p$ O[
7 ?* I! N8 T# @* J( glet j 0
7 m" o1 ^4 H2 I+ g7 _6 T3 t6 ylet note 0+ o6 {/ r# X- n% e$ N; I1 u
let k 0: M1 M. ^! d, O
;;
计作出过评价的邻居节点的数目* E$ n& _0 y+ z* @: k7 t* d
while[j < people]
! V3 [6 p( p4 q1 x  `- {[1 M% I+ D" r* a3 ^( P  v
if (item j( [credibility] of turtle (i + 1)) != -1)
8 z" X/ J0 k+ H;;
判断是否给本turtle的评价质量做出过评价的节点$ H9 d3 U& u  w) S) m
[set note (note + item j ([credibility]of turtle (i + 1))). q4 N3 W* |  _4 h( s1 x* Q
;;*(exp (-(people - 2)))/(people - 2))]
6 n  A, o' [9 E
set k (k + 1)
9 r' C8 `! W6 d# Q]
4 m/ P: ]) R& P- t: P! h: lset j (j + 1)
  R% D% J! n5 y]
& l( @4 n4 K7 j/ H2 c6 \' _set note (note *(exp (- (1 / k)))/ k)
, w2 g' W* U% O' }1 W: y' ^set credibility-list (replace-item i credibility-list note)
8 t1 i8 G' S" o2 M  ]set i (i + 1)
; v* }. U/ w  _]
4 O/ a, E& M. Q: t& L9 h% ?, O" Aend
; k: _% u1 H8 q
6 Z  H" Z' V: L6 [1 j2 ato update-global-reputation-list/ j: C" C( X' |" g7 n
let j 0  S% m2 ~! l# M* P- d
while[j < people]
' Y# z3 c3 O2 X& g" o. g[$ X; }8 h# M0 B9 u
let new 0
. u+ B. D1 [' l6 H- g7 l  o;;
暂存新的一个全局声誉
5 i9 d2 }  h9 vlet i 0
2 M0 n9 v& n9 |, [! Q4 z  K% G+ N& x. k, Wlet sum-money 0
( n6 X2 h! [9 G3 d& N$ k4 Y% f6 slet credibility-money 0
* R  J' t3 L# w; m& ~! T4 R# [while [i < people]
, f7 j. }8 {6 G) z8 V0 _- q[. Y  r; t7 D6 }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. n9 W0 o& s7 ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 b4 Q5 q1 e/ h6 dset i (i + 1)
3 J8 \, V* V  C: P5 ?8 x& \3 {& \]: _7 ~& C  y; q! `: O" _% R
let k 0
3 y+ w6 Y! @4 \  r; x8 Z. e" P# Y% @let new1 0, J) z1 \( }& l
while [k < people]" ^/ z2 Q5 H9 Z- Q+ Q& M
[
% {# J- l6 Q% I- m: T# Kset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)6 G  Y5 Q$ ^) ]2 r
set k (k + 1)
; y8 K, x7 g$ J/ m, w]# c, B3 R, {7 r8 l- [" J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 H! ~% H  Y* D4 x& [8 H3 l' ?1 ^set global-reputation-list (replace-item j global-reputation-list new)4 a' f0 q* u) D2 V8 ]# A
set j (j + 1)3 ~2 V# v6 B- s7 \+ L& U, {* o
]+ @+ n6 a4 K7 n
end
# D1 W, W1 @& y. M) J6 L( x' U, M/ D5 j/ k
. @, }8 C9 g' R' r* Z0 E

8 e. X1 r# q) n8 @$ r( d2 M8 ]to get-color
  p) E7 c: A) n4 `% I0 n) y3 j# a6 }/ }$ i# ?: v" G6 M6 R
set color blue

: i6 G3 G+ R7 v# Z6 nend& s7 C6 M% t% r, Q* c( W1 y: H) E

; W! \; K- Y& v" H1 lto poll-class/ E0 f" a  D1 R( E( ?  q. ?
end' q. l2 t9 F1 k. J' U! a( U' I2 e
% j- D* O# O  {3 ~0 E+ v% L+ w
to setup-plot1
; k2 E3 o! e" ^9 k6 o) x  o9 t2 j
+ j2 @, ^5 n; J4 Lset-current-plot "Trends-of-Local-reputation"
/ k  z/ ]) U- U: V2 D$ N4 C
2 d2 a0 F$ N6 P8 y! e
set-plot-x-range 0 xmax

7 j- a' O2 v0 Z" B7 ]* Q# V1 g( R  l7 w- b3 Y3 z- c
set-plot-y-range 0.0 ymax

* t8 x, D' r8 \" `. O/ [1 Mend  q1 f' [1 y8 v4 F

$ {1 G' A/ L7 p; _# m: |to setup-plot2
; m" W; j. `- n$ _0 J9 j4 x) R7 ]3 F: ~- I. |  w! B
set-current-plot "Trends-of-global-reputation"

- p% y6 ~$ p7 z: S' F$ P; j- H4 J" s! \+ z, ~; _1 ^; B
set-plot-x-range 0 xmax

! N- Y$ ?! b& l* o% m% A" B' [& {/ \0 Q2 l4 ^
set-plot-y-range 0.0 ymax
& Q& ~1 P. P) b' p# b
end
9 f0 i- G% d# u6 w0 b) m) R+ L* u6 s
; A; o7 B2 q' w6 Yto setup-plot3+ t2 h7 A  ^) h* U, K

0 ]4 G# o4 m; I, E& }: ?4 E! [set-current-plot "Trends-of-credibility"
1 w  f! p; Z4 c( M* [: O, @
) a3 I5 O' T* m7 e: u6 E  X
set-plot-x-range 0 xmax
# H; V+ X( B0 E4 B7 Z) f

& t. I' I5 \! s: w3 }# E) K0 e* mset-plot-y-range 0.0 ymax

, O! r6 X; y9 Aend: ]/ G$ h/ M. B# z6 Z# ]8 `# s& L2 I

5 L* b: u- J1 B" g3 [to do-plots
" {) u$ {& o* O1 [! r$ V* d1 Sset-current-plot "Trends-of-Local-reputation"8 o4 {& ^2 S. b. Y; b/ M
set-current-plot-pen "Honest service"5 o8 p0 v4 G3 e; ]& s
end( q" x6 Z! l8 H

' a# c" E8 b$ j0 y[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
- @$ I' _6 ]5 h; e% A7 X) h
- J$ `5 y* ?7 M# U3 L这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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