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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:
2 d7 `8 f7 v" d; L$ D" }$ N$ Xto do-business
9 k$ s+ C* w, B. i" e5 ^6 | rt random 3605 W+ P$ `/ R7 K) o- C% @
fd 1
! \9 F( I7 i/ o$ i5 K4 `3 u1 O" d ifelse(other turtles-here != nobody)[
$ p, e. u" ]6 x6 n' B" T   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.
1 }! \2 U# y- F# M9 V: D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 i" P% r# d$ ?+ X4 F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- W. X9 u6 N! j5 N) e
   set [trade-record-one-len] of self length [trade-record-one] of self" c% J# z" ~0 F! q0 e) Y
   set trade-record-current( list (timer) (random money-upper-limit))
  C* U: s$ H* ]" _/ h% x% s
4 c4 l' P0 V$ q; ?% F, S) j) L* s) Y问题的提示如下:+ b! w8 h4 r# q& C$ y; t

6 o* j! ~% C5 F5 ^& [' m& X0 x, H& j7 lerror while turtle 50 running OF in procedure DO-BUSINESS
6 @# r( \+ j4 a* |6 |* x+ M5 X  b  called by procedure GO
/ t( n1 H; C- ]% q9 [OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 V0 e1 c+ B3 ]% ]% f% [
(halted running of go)
+ Y  q7 S. b; J9 {; j" P" V, w4 Q
, o, o$ i. b0 n4 O. F6 H( g. C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~~
) H4 I0 `# l6 b. p1 K" B) h' @4 O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. N. _2 D  k$ B+ D
globals[1 V6 q& M8 K- I2 W  @* c* `) J
xmax& W) M) `6 {  w" R2 H
ymax
0 k% A- K; u# [/ A* M/ T0 D5 w9 Aglobal-reputation-list  ]2 Z* K: ^' }' c4 {% U+ ~
9 g9 D/ c" x, T9 a
;;
每一个turtle的全局声誉都存在此LIST
# i2 C. S6 Q% i3 \$ `" v2 G$ |credibility-list- n, R! h5 F! W4 e) g
;;
每一个turtle的评价可信度- h% P, x: i* \$ D9 l7 L* q6 M* P
honest-service$ B. Y+ N7 b( ^! Y6 j
unhonest-service
3 z5 j, |5 v, @oscillation/ ~6 \5 q* F, }
rand-dynamic0 ^2 o! {) E" P. i& V
]3 g/ a. c3 w; z

- w: |' e9 n4 `& S# b" \0 ^) F8 A& z6 fturtles-own[) Q; T+ Z, w, G9 H) f, ~
trade-record-all% q( y# k7 o! H$ f9 Y$ A: d
;;a list of lists,
trade-record-one组成
  o/ T3 `1 l7 x6 W7 otrade-record-one
6 V5 ?( e0 y# e( P3 z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) [# j% W! X  G6 U6 c; I
9 L. [+ n/ y& D% W. a
;;[
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]]  G4 D0 G3 m# N8 i. l
trade-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]1 D; R0 }0 R4 `/ f5 z: }! t  B
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list
. O8 P! b4 ]- f$ f& dneighbor-total* ^5 X+ T( o5 V- d/ v; P( t
;;
记录该turtle的邻居节点的数目
8 I, e8 _/ }/ `0 ]2 Vtrade-time" H# I7 J, |5 R0 o
;;
当前发生交易的turtle的交易时间, p5 E1 F: Y5 x( Z6 o/ T; k, p
appraise-give. p! K5 k* O& r# }6 b
;;
当前发生交易时给出的评价
5 M5 e$ u/ _. u# n* ]1 B9 vappraise-receive" s2 ~8 W8 p$ U  B, @. f; c
;;
当前发生交易时收到的评价3 [- H, y8 P  b5 e
appraise-time4 Z3 q5 O! r) J# n( t- _
;;
当前发生交易时的评价时间
+ W2 }7 Z- N) Q2 |local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ d  c) t( ?$ m9 _
trade-times-total
- x. y' q7 [2 ]4 ~1 P0 b;;
与当前turtle的交易总次数- F/ H' l" I3 \
trade-money-total
! }+ C. }- N9 I2 m0 d: \;;
与当前turtle的交易总金额
" y: Z7 A. L( [3 m' I! }local-reputation# n* P7 ?4 _  j- C  v4 v
global-reputation. |  B9 e& \- d
credibility
8 d" S' c1 p3 c) e5 };;
评价可信度,每次交易后都需要更新+ S2 V. N' J7 t2 E; N# p3 S
credibility-all
9 R( v+ E5 b9 P;;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0 W* v" p0 e. Q" F' T% t$ r' S1 t

$ t$ v3 ~% V3 L1 R0 };;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, x3 J+ a' c  [$ @9 m6 D- ]
credibility-one
3 [/ t  M0 s/ z  X& w2 `) r;;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
7 y; L) p# y- [; V, F9 K$ L* X5 }global-proportion2 r& x0 X" q9 Z/ h2 Z# c' w
customer
9 U2 w3 k5 ]6 K6 {! }! [! |customer-no6 V3 B9 y, [# Y
trust-ok
1 q) L) M" s4 A& R! ktrade-record-one-len;;trade-record-one的长度4 B% a: V6 b6 Z7 b
]
8 Z# A6 M* ^. B( I
# c' @+ b6 }0 i& M8 w# M( I9 G, s+ z;;setup procedure$ ]" h" f' `, y, \9 I4 a6 |; I

4 R, {$ ^( {! |5 }( e: X) h$ Wto setup
/ D% O9 u$ z* [) Y- i- B# y
* @: o# Y0 w6 cca

7 }6 W0 x6 G) x% p7 |6 B/ Y. P0 y& n$ e( p2 E
initialize-settings

! r& `1 D1 X4 @) m
0 ^) {: }0 O0 J, E  d' q, @6 F: {8 Scrt people [setup-turtles]
6 [; B) m" _5 m/ x/ `
; _( u/ Y2 w- l6 H9 a7 x' O3 K4 E
reset-timer

# P( `+ s+ p' S0 }- y  k% h8 r0 w+ [, z  W1 Z% x1 B  K
poll-class
6 t) F8 U" u. x) m9 ?5 W

+ W+ y3 [2 j/ H* Wsetup-plots

: Z3 O* }* Y% G" K' g7 U. ~2 O  w: x$ Y( ^: b; L8 |0 s  E
do-plots

# D0 p! @, {3 Jend
! [+ X( w, h1 m- ?: g/ L. }6 G6 d  ^( O# x' `# T
to initialize-settings
  |4 Y' s! Z2 _) h
. h2 M( b8 ?: R% Q, Lset global-reputation-list []
3 o1 e9 ^) {5 C

" G+ t6 l/ p: d9 [set credibility-list n-values people [0.5]

* i9 B1 \$ f3 O' E( \$ S* X! u$ U( t
set honest-service 0
* Q0 R8 s: H% y4 F4 ^7 `

% v1 u' N) A% V: c' g3 e7 Zset unhonest-service 0

2 C6 w+ L: S" M8 b. F, i& @5 W
) _) h: n$ ]" Q; x4 f3 y* Lset oscillation 0

- I8 I% O* Q0 c& W5 A6 w3 Q4 B3 e9 I5 p$ x! M- h+ d$ k
set rand-dynamic 0

* N; x; W) Z& @8 {end$ Q% L, d4 x6 ?, U' k( e
  u. ]* ^% V* q
to setup-turtles ) u* _9 k. m0 y) {
set shape "person"
1 J" G6 B5 E' y4 _, M$ jsetxy random-xcor random-ycor- l  ]$ ?; P' w' N8 v
set trade-record-one []; J" `, r5 J6 t3 u& X

0 {/ o4 R# }5 q: }! p! i  Yset trade-record-all n-values people [(list (? + 1) 0 0)] 7 V# Z8 a; A; m8 q, |" q

( x4 F' h* q+ u( n1 X2 Mset trade-record-current []
0 U& h! L; b- oset credibility-receive []
1 C% v' _6 T9 R* ^: l# ~* ~/ E' ?; Z" Iset local-reputation 0.5
; T% h' d. s" c* zset neighbor-total 0
/ X7 _2 S2 @' T# w5 Hset trade-times-total 0
7 t# v8 u7 ?) M7 n3 K! vset trade-money-total 0
" w# T  n) x/ a9 ?9 y, Eset customer nobody
5 C$ W. ^7 k4 Z8 g2 d" I+ Qset credibility-all n-values people [creat-credibility]* ?# @) _( V- p; Z; {& N
set credibility n-values people [-1]
: X: R+ P1 |3 W6 H. G- I% z( h1 S2 |get-color0 W- x! L/ w# B3 z; A( x6 P2 J

! Y6 C3 @# ^  K# Q0 z2 ~; t: F3 T7 ]8 _+ ~end# I& C2 y6 L! A8 g9 L  ]
, b' B, d' C* q" D
to-report creat-credibility0 A' w0 }" w7 [& S- Y. j  q9 U
report n-values people [0.5]3 C, m2 o- ~6 N/ ]
end0 k0 C! O2 m" ?+ O2 w" m
5 s, ]6 a$ a1 O7 M# n
to setup-plots
2 Z: C, {" `& Y+ Q& ?. C7 M5 {
set xmax 30

4 a: d, K0 B+ V- F1 c3 I: @8 A
set ymax 1.0
2 s3 F6 A( @4 \+ B( X) L
  a$ {2 z) e2 G+ G: M
clear-all-plots
4 j4 B. w: q* G! c) t4 _9 e" W' ]
  e2 S: [/ w) m0 d7 \
setup-plot1
- |' o& x- D& Y+ `

# B  V3 u3 y8 E8 j% Q4 S- Esetup-plot2
$ Z6 A4 A  y# Z  a& T# F/ L7 S
& D- ^6 `  Q& ~- I6 |: x" [
setup-plot3

4 ?$ A  D$ c( l" uend9 D) h+ d" R7 J

- g% g3 `5 K3 r" v1 c! f;;run time procedures
7 C( A0 f" X, o* V0 p6 S- ]
: `: R  |0 M+ B9 gto go
5 F/ e9 k+ j" S- x7 a, d/ u% @# X$ v6 q+ @9 p: V6 f& d$ v. F1 j
ask turtles [do-business]

' u' e: H( C. i5 }) aend7 S) _7 s  z+ b' o# K+ a

1 l, j$ g' J$ R$ w5 R. Mto do-business 2 j! b8 R' O0 c, p0 N
/ P4 }) M! v* ^' X) U" ]. x
! p+ l1 c8 C9 `# x7 j0 Q7 S9 M
rt random 360

2 |, R' ~. ^# h" ?# ^( _7 Q# R! w6 b: }- P
fd 1

" ^: t. K4 A- e) S9 M3 @/ l% S4 [8 M, E/ p0 F; A3 i8 t$ n
ifelse(other turtles-here != nobody)[
% K2 h, D$ y9 p6 u9 W# o, J

2 H% Z$ F0 [8 ^set customer one-of other turtles-here

1 a$ y+ [$ ^; p9 _& ^- H6 r% b
( [8 x4 k+ E$ O* [0 N;; set [customer] of customer myself

: ?  a( X; Z+ P4 m8 I; i+ h2 p1 i, t- c6 O' L0 y+ R4 ^
set [trade-record-one] of self item (([who] of customer) - 1)
( M' s1 C- v) r! I[trade-record-all]of self$ M4 ?2 P# w  a/ b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. X2 R' U4 |- V+ @; o! n
, F" [9 t$ x1 t' m# |+ r5 ~0 X
set [trade-record-one] of customer item (([who] of self) - 1)( P: _' y; t# ?1 E
[trade-record-all]of customer

  y+ d& E  g$ s# h- U- K
* h9 j) o5 F0 }7 V; i- Pset [trade-record-one-len] of self length [trade-record-one] of self
/ _$ ]- [' R  h1 w+ x

- X- D9 z, ?+ N  N& X+ xset trade-record-current( list (timer) (random money-upper-limit))

8 }% r& p+ @  {9 U1 N
0 M6 o3 R" k5 ^& j# b) k% Nask self [do-trust]
: D% N% i2 Z3 _$ o;;
先求ij的信任度' m3 m  d( T! W6 Z. J, C

% f* \+ P2 |- Zif ([trust-ok] of self)7 u1 _% b5 d8 U& }! q
;;
根据ij的信任度来决定是否与j进行交易[4 T5 R; Y! W* m2 N$ G* U& w7 I5 e9 o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 A7 j' E( L- K1 U7 q
. B$ Z+ L' I3 b6 Z6 ~5 j
[

) a9 N6 a3 \3 e7 E- R  P2 {' X8 W3 C- R" f
do-trade

" b8 n" @5 [5 Y& A
! M+ u3 B" k0 X5 q( f7 ?* r+ Y, Qupdate-credibility-ijl

. N( \8 g% h, l
) t& f; o6 {" l# v! A: {) Uupdate-credibility-list* p, y9 c0 M, G: h( X3 ]/ I2 `# g
, B, w' M1 X7 z2 p9 E# x
! X6 z6 a6 p& z' c# f8 i
update-global-reputation-list
8 ?; J* Y( r  i' I4 a6 G) j- [+ c

) }6 l1 C3 [# d7 ?" j/ qpoll-class

- {$ d$ v% Z4 V0 E9 s8 ]- {2 ]7 F# A
get-color
  ~# T# v( ~4 G: g" {
+ C7 q+ w6 W& v3 l' Q9 j
]]
' O- {+ S0 D1 q+ Z' C7 x+ y) v- ?) t+ S. s
;;
如果所得的信任度满足条件,则进行交易
! K- `: A; {5 y' r* G! d. Q' \
  p9 d# A  |- M4 F8 Q[
9 {; e! V! b0 I

7 K1 D( H; Y; v. l& Qrt random 360

! n; Q8 g0 B8 M+ j7 l
- P' g+ L' B$ _: z0 ]fd 1
& M: M$ U5 s* i* Q
/ @, [2 k9 I3 Q1 R1 o
]
! y, T% U" J- _( V

5 x4 N7 Z8 F$ A( _5 z9 ?& h9 send
  D4 h( Z. z5 a' ^/ r, l

6 f( {; A9 T) Vto do-trust
# `- G3 R) n9 N- sset trust-ok False
: A9 {; z* x4 Q; P! q8 B
2 P" ^" J: F8 ]& t
! V8 e3 T; d! R% f' }- q4 u
let max-trade-times 0
( j) c# N3 ~9 A( h1 s: T. cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 M& ?7 w# B. Blet max-trade-money 0
! b- O" G& N; e4 A! sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! N  ]4 F1 a7 g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 d* n* C, Z. H7 U, V+ X: }
+ o+ {5 o) J# P2 X* x

1 X5 ]6 x& N0 l! S' a& A0 ]get-global-proportion
$ |9 G, F- l2 `- _: t+ vlet trust-value5 {6 f8 A8 s4 l3 o9 R' f7 V. P
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) \" J6 c; q% R- oif(trust-value > trade-trust-value)
$ R& E/ N$ \* V$ d+ N+ d[set trust-ok true]( J% V/ a, c- G+ Y; ^, I' _4 k: g% G( Q
end
+ [1 i5 O9 k: M
2 x# C0 y; Q4 j) m+ `& Qto get-global-proportion
* y+ E+ W6 \) c" Nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): |' Y3 Q: Z+ k" D9 P  w
[set global-proportion 0]
6 m. Y, j# c' R[let i 0" \' L3 P, R+ w5 h+ I
let sum-money 0
* V+ f+ w% v+ z. j- R* uwhile[ i < people]7 ^; H) f: N$ D
[0 Z8 C. J" a6 ^  c$ _6 Z4 ]. ]
if( length (item i2 F3 c5 Q; r7 E! a1 u
[trade-record-all] of customer) > 3 )

: ^! @4 U; U; R/ i: I7 ^; T[2 W  ?7 p* c! N1 j. t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 u' u2 _" P8 J. ]+ h]
$ A/ {& T9 J- [4 x4 j) t]
6 x$ }9 q) o" z9 G3 ?7 Y' X+ Llet j 0. S0 B) n* J7 i$ C
let note 0
1 f( v+ L* U& L4 G: M! q0 _6 {while[ j < people]! E1 o- v8 I! U  t: T  k1 z% v
[1 }% S, s3 n7 R4 ^/ B
if( length (item i
1 e0 d5 D9 H  g4 h  U[trade-record-all] of customer) > 3 )

! p, G: |  W1 _4 Y" }, X/ Z8 A' ][, r3 g; V- V- `* `. I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 f& ^" b; ^2 }* k: r' _+ ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 o) v+ @: \- V6 J1 x5 j1 p6 \  q9 f$ o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; E. s0 X4 {2 S+ R4 b" k
]
$ V. ]- h; r" \]; Q" c& c) Z4 V" E
set global-proportion note- `! E. S) s$ U: U% w: Q3 c
]
. [( M% S* i) j: U$ G, j* }: nend4 C8 p/ S7 h" X  P" T
; _3 g/ N7 [* A$ r
to do-trade+ [- C! A  x, M# R5 h
;;
这个过程实际上是给双方作出评价的过程
! P5 z+ l1 I0 ^" uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 c; N* @6 w, A9 v# iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 W" R; i  E2 Z
set trade-record-current lput(timer) trade-record-current
) l* O) V3 c) ]! a+ C! v;;
评价时间
7 s1 X+ C- A" q0 h4 D9 G6 F; a/ C+ iask myself [/ v: u& R) z* a5 o% f0 u- N
update-local-reputation8 G$ m7 O0 g# B5 B6 }* }* l
set trade-record-current lput([local-reputation] of myself) trade-record-current
- V, [! y4 |9 a; Q" ^]
$ e3 M+ Q# U3 A- O7 `set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; t0 M  {, ?$ Q: Q7 V, j
;;
将此次交易的记录加入到trade-record-one  S, o+ o7 ]4 L4 {' L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" `/ C( B9 q# A+ i! q
let note (item 2 trade-record-current )
, g- D& |9 P4 Q; B# Z! Z# Lset trade-record-current
0 ^6 g5 c2 y- f& O9 q* I+ @(replace-item 2 trade-record-current (item 3 trade-record-current))

. E) g+ u0 Y8 Y: _set trade-record-current4 G! m! F4 G+ G5 z+ N
(replace-item 3 trade-record-current note)% U4 h! [+ g( Y: k

' m) K( x2 q" l( R
9 r6 P3 @) U; H) Z% O
ask customer [( U# G5 H: q  E
update-local-reputation; p* \9 W2 M2 L
set trade-record-current
7 Q5 k8 V( H. f- [2 m(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 O! m& B, L2 n
]8 l* x) Y/ i0 f8 z. }. r9 X

( @, H# o0 K/ ]2 z+ u3 I5 n/ |

0 H* [3 E$ v4 j& [" W- k9 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" S; u% ~! L! R. N9 t8 d0 [

2 u1 b2 ?& N$ w% B8 c: jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ s" \& e$ \& B;;
将此次交易的记录加入到customertrade-record-all
* q0 p4 _8 j7 [  D- n% X* b1 ]end" m5 R+ A% b  A* X) _. g2 _
6 ^, f6 H' U# l% v! c- V0 Z, A
to update-local-reputation
# \% V5 f4 l: s; x1 Sset [trade-record-one-len] of myself length [trade-record-one] of myself
) F; @  j# @: g% I/ r; m) ^( z0 V
9 W' f7 v7 p; x9 V* I
" E9 O9 ?  t5 T2 o' t/ q: j% F" };;if [trade-record-one-len] of myself > 3

5 M' V" i: C5 w8 v/ p- f) d8 Yupdate-neighbor-total
9 Z" b% D. ?# F$ b$ f# N( B;;
更新邻居节点的数目,在此进行2 c. ~0 y7 [5 ~
let i 3
* F4 a& w" h0 n- [0 z- E) ilet sum-time 0
- |. g# ~) G1 |2 W8 x3 v8 r+ @7 qwhile[i < [trade-record-one-len] of myself]: y- J+ f* O! [8 y  B! t1 F
[
6 t3 b" O1 k; Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 v4 N0 e  b8 U: V
set i
, I& `1 E, ^+ I; H4 j% b( i + 1)

7 p7 ^3 A" @0 q! N]
4 s3 M- I2 X+ d9 z9 rlet j 3
+ S5 Q# Y( K; q/ E3 Plet sum-money 0
0 |: l! r/ @3 ?2 c5 j* jwhile[j < [trade-record-one-len] of myself]: p4 {1 J0 v/ ]# Y  Q. y5 m8 L- Q4 ]
[; }9 C' L; P% V- W+ `7 Y; c
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 n1 b' ~) X6 F& U+ Rset j* E, C7 W/ k5 \( i; z9 [* ?
( j + 1)
! @/ T3 ]. @4 K! n" p. f* t
]
- n8 r# I4 T8 Q" v2 W2 m3 _let k 3
, Y. y, f5 O5 {7 H2 T1 xlet power 0
, q0 ^' j1 l% jlet local 0
. K& P" w; }* _/ C3 o7 Pwhile [k <[trade-record-one-len] of myself]1 {3 h; W% p* `3 [- s
[* k; p; I( w* a0 x
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)
' O3 Z2 H% q& |' A& o' T  sset k (k + 1)& o; ^1 h+ V  q7 t
]
3 c! {7 ~: v0 Sset [local-reputation] of myself (local)3 w# f2 o, x$ @; C
end3 c' R, N$ z# s# c6 ]( d5 U3 S7 _7 p

4 `/ l: ?( d# q8 D/ Dto update-neighbor-total
6 `3 V  C/ K* P  D* }( X
! h: X# n, n* [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. X) w. ]- b+ K
& |. P1 B9 E- K9 D( \6 ?
3 Q3 i3 P* y0 Q+ O
end
3 X. Q6 ]9 D0 q' a9 ?
2 h, V' l6 \8 c7 ?& N7 A3 lto update-credibility-ijl $ ^5 i' k: h) R2 R1 m7 [- C" C  h
! `- j8 I# `9 g7 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。, T( n# [1 l! U. |
let l 0
! b& L4 a; k5 X4 A( S; iwhile[ l < people ]
1 L# y* v6 @% i, @5 A. q% s' O  D5 y;;
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
& x" o9 m3 M) |; g  r" j3 s[
; Q1 C  x* J5 `' l6 L4 olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% n, a% ]1 B' w8 ]' F% Pif (trade-record-one-j-l-len > 3)
; U6 r3 t$ E1 p% O+ g[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
. n2 U7 ?# H/ I7 V! O( J1 _let i 3* [% L  Y; j5 W7 Y3 w0 Z! ^
let sum-time 0
/ m" O' n# w, D1 }4 Fwhile[i < trade-record-one-len]8 J1 W) S$ Z. V% I* z
[
- k* O: ?8 j+ q( |, S2 |& jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; y- v5 c( c. l' x1 C0 s5 Vset i
6 @& o  D& T( r) j4 q6 r( i + 1)
# L/ E* A- s% k- {5 S% J0 e! m
]1 U) H! l* p/ M9 Q. z4 I
let credibility-i-j-l 0. \) `( s) R; ?; }8 i
;;i
评价(jjl的评价)# k- k! F8 [$ e* C2 ^2 _2 l9 Y; X% U
let j 3
2 Q! f% [3 M  }0 H! vlet k 4" z6 g3 [) H0 d9 r( W
while[j < trade-record-one-len]
5 I$ l1 {7 H- ], L+ s+ k4 F4 E6 p& G: n[
" j  L# Y) ]' I9 e) ^' m1 }while [((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
/ ^9 {7 r- y9 ~+ K6 M% Qset 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)
' _: R" w) e: x' Vset j6 D/ v& u: B! S$ s( [
( j + 1)

( L" N! S, _" A* f+ X]' I3 t0 u( {6 `0 Z3 u
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 ))
3 L9 |. D# i% A1 y! |% X
& p7 i0 K: E& T. s$ ~# H

; K  k" `* U  B5 }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): F. [- Q$ l9 o# E! P& B  f4 l
;;
及时更新il的评价质量的评价
/ f& }: X% ~4 N* z/ \5 Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 [" _8 C$ @% ^3 _, }0 v
set l (l + 1)
2 [$ N, h) X, X& y" P: a]. A) U2 H0 }% H
end5 a. i  z+ `" g  r

4 }" Z1 Z# b$ L! {  `/ \to update-credibility-list
% L4 _+ K" [7 |! v! n0 U1 q$ D0 ~let i 0
) _9 I; X9 X8 C$ c3 L. owhile[i < people]
/ Y$ ]. x1 [6 `! M2 k) @; p[, G9 |, y  y" P0 L- J( V! m
let j 0
8 c, o4 I/ B! W/ X% Y) ]let note 0
5 [) h' k8 w1 N1 K% h4 ]let k 06 H  V6 {8 i) C, L( T& W2 ]
;;
计作出过评价的邻居节点的数目
; O" n( c4 M' J: l$ l" y) Gwhile[j < people]
# P8 J) a' Q  E( X+ E9 d[, X$ k+ Q$ M8 {  W1 M
if (item j( [credibility] of turtle (i + 1)) != -1)
0 ?4 X/ h, _6 D! O; ^+ q, f;;
判断是否给本turtle的评价质量做出过评价的节点! e" [1 Q5 X2 P; r# T  F
[set note (note + item j ([credibility]of turtle (i + 1)))8 c. j0 C# `+ _* i+ @! _) [5 N
;;*(exp (-(people - 2)))/(people - 2))]
& S4 ]/ l* U* Z
set k (k + 1)7 i% S, B/ c2 A9 M) c% q
]
4 ?6 n, c, t8 C; R# [1 lset j (j + 1)& q- o2 o5 x) C. `$ _. X. c/ o
]
' `. C+ Z" n6 ^7 Y) w3 M3 v, k1 Lset note (note *(exp (- (1 / k)))/ k)* |% |" v. p0 g) n( t! b7 ?+ r
set credibility-list (replace-item i credibility-list note)
; r* b8 _; t. [set i (i + 1)  m  F4 ], i$ X7 ^5 v" T' ]$ o6 e
]) [: _1 d7 j. E& S$ ~: D# x* _
end; Z( S3 ]; n/ I3 o5 o9 f: Y

) ~( ?1 ]  }7 ?to update-global-reputation-list
" _' F: [. u- u% A8 ulet j 03 K4 X9 P+ L' \( {/ m3 E
while[j < people], ?" q8 X# P+ l) t$ A9 K
[
) d5 }3 f+ {) z$ @9 P  L' p1 T* f# blet new 0
, \8 Q/ m. G: P;;
暂存新的一个全局声誉
0 a7 ]; F* h& X( vlet i 0
/ G* R- ]- |. M, Z0 y, D% n  Plet sum-money 0: R& c' q4 ], d
let credibility-money 0. l: ~4 d1 D; `
while [i < people]) H0 `0 s6 N) c
[
" y: E+ U! c2 {8 H. T; Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 x4 l* d; L8 o- S4 h
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' K9 X2 g7 \/ `- Sset i (i + 1)
4 m- N' S- S  q3 S: l3 d* u& T  ^( []
" |* L( l9 g1 Y3 T; Z, Vlet k 0
5 f0 H, Y% [1 D' D+ P* alet new1 0& ~# ~( t  t3 ^$ D
while [k < people]3 i: A0 H8 f1 f9 H' s
[' K0 U+ }# m: V0 p0 L1 k: J" m
set 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)
, K( W9 |( @3 S4 @: G9 ^' d4 _set k (k + 1)2 |& B& }, T0 P5 Q7 V
]" F9 p/ E) @( r8 U! ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! t( u2 |5 v% h; U" t7 M) ]( T2 r8 _set global-reputation-list (replace-item j global-reputation-list new)
6 ^& i8 E1 z2 h; vset j (j + 1)
0 ^, M6 R$ [2 I! L  H; b! U]0 l  Y8 f/ j* z" j( a/ Q& X$ T2 B
end
/ I3 n( T( L& }# \0 U% Z: |& x6 c
% C) d' N4 o0 ^& o. Z; H) w- H0 J$ }+ [& X8 I& }7 C  G0 W

2 F9 D& M% p, v* q4 ato get-color
+ S/ x: I  `% G4 u2 s+ @2 t4 A* h& i% ~8 G8 y) o0 U
set color blue

6 i4 V, z& p* k6 K1 u4 Zend
. p( S5 {: O' A7 g# q* ?2 O9 K" H4 I% n
to poll-class
6 i! _7 G: C; H( o+ {7 gend
' `2 ~. S+ e6 x" r. ^  N3 Z& ]. ^4 m
to setup-plot1- V) V& ?4 {" y. P0 ~) ~. V. N
& V* O/ U7 f1 q1 ]8 |* l# t
set-current-plot "Trends-of-Local-reputation"

6 Z6 T/ i' _* m. f, _5 f, @$ s  d- w& b( l' X* C+ Y. g/ G
set-plot-x-range 0 xmax
2 s+ Y0 l1 C6 j; [7 R/ g* y1 U) f
7 F; _, k' |& H' V
set-plot-y-range 0.0 ymax
6 g+ m* A( W8 G9 X$ Q5 g, [
end! R9 ?$ P4 P3 ~$ R. t. \+ g1 }; I

: K5 u6 f: M. @! g2 J' [to setup-plot28 g( d- }; e7 N! D2 o7 A5 Z. T
4 I+ Z1 r' N. `+ x. e9 [) v
set-current-plot "Trends-of-global-reputation"

4 H) s3 p% m1 T5 q5 v4 b6 y6 b/ G4 h
set-plot-x-range 0 xmax

3 ?  k. j% s8 s1 H; U* K8 p; R! o1 K) B2 J
set-plot-y-range 0.0 ymax

) \1 \; I. I7 i- iend4 n$ `8 A' Y5 j2 M5 K, A# N# c

) C& t+ |" W" m9 V$ @to setup-plot3
4 j3 \, F% b, a* y
1 G3 ^) B$ J2 P! V% U' \set-current-plot "Trends-of-credibility"
* s5 j4 }6 a" u2 N5 e
% G& D7 d8 j& x* j( j/ d) W3 Q
set-plot-x-range 0 xmax
+ T9 Y5 L" ~. m& t9 C' e

# ?7 w9 ]2 {/ r- w$ g9 Q( `: yset-plot-y-range 0.0 ymax

0 ^1 w, v' T0 Q! j9 a% Oend
6 J, N; S7 [7 N5 T( n6 ~
# X0 [' X7 ?; T5 D+ @to do-plots
5 Y% ]8 q# f6 Oset-current-plot "Trends-of-Local-reputation"
8 N, F; l, u+ e' ~: Z' hset-current-plot-pen "Honest service"
9 v8 g; Y7 s2 [5 e) ]7 ~' Fend
( y1 T5 ]* q2 e3 |+ n
* N; X# b1 C# R! ?& H* M/ l9 c[ 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.1 N: X' d' h5 c6 N( _4 Z+ _
4 g6 H0 O& @  D4 F2 Q3 V
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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