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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:
& R. t1 _: b% Kto do-business
, k. V! V$ ^( }' e/ a. W5 O  f rt random 360! H8 S* I1 @5 M$ r& }2 a0 O
fd 14 L" p4 N2 _% e: h+ s2 z( N% K
ifelse(other turtles-here != nobody)[" O2 `7 @6 L( H7 K- m
   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.6 w) w5 ?! f; P" v' H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 C/ q( w* V* W0 l! v8 t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 n# {( ^& x- t3 r4 a3 L
   set [trade-record-one-len] of self length [trade-record-one] of self
, J6 w7 o  g. g! [4 }$ A+ D) n" E0 ?6 S   set trade-record-current( list (timer) (random money-upper-limit)), h/ j* \- x" f: d' t

8 n; k, g5 X0 U# Q( L8 h/ _2 ?问题的提示如下:
" l! ?( a/ \. B7 M/ ~0 i( b9 u# }* B7 \( I& V  w+ J" Z( H/ b
error while turtle 50 running OF in procedure DO-BUSINESS5 y+ E+ q$ V( b
  called by procedure GO
0 |& n/ i0 }  I4 |4 F) ROF expected input to be a turtle agentset or turtle but got NOBODY instead." \) U/ t, L: }- R! m' ?- X
(halted running of go)
" M# r; Q. h7 D+ i, e8 a6 o' l
' L3 v3 e- B2 g# {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~~* B  |8 Q( S+ x/ I3 n
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" w1 {, U- ?5 Y6 X2 O# i9 b# D5 N
globals[
$ U4 l' @; I) p3 I# yxmax
+ {- X3 g6 F8 nymax4 J- g- c; }; U& F) A8 A+ @5 r
global-reputation-list9 ]9 u7 r/ y% r3 P$ o' _* v' k

' p+ x! x7 z7 }/ g2 V;;
每一个turtle的全局声誉都存在此LIST  ]* z  I- p; ^5 Z
credibility-list
  @% Q+ V% Y- r4 P;;
每一个turtle的评价可信度
. l1 _0 U  h% y, ~, k3 p% z7 Ihonest-service
) Y$ \1 ?, r) U$ B7 z) `unhonest-service: M! Z  [! W3 R/ ~
oscillation) s+ Y: l0 X, H6 i
rand-dynamic9 ^. Y2 P, T4 I3 Q2 J
]
1 I# W( {3 X: j* g2 k2 L! S3 {+ l6 _8 L1 b$ G+ Z5 B1 F
turtles-own[* F. ~9 d; Y3 n; M% A8 W5 T/ o( D: w; L
trade-record-all
  A" d. A# b* R7 \; {( `& U! J;;a list of lists,
trade-record-one组成
0 G4 X- y0 c: a- A; ]% }, X: Ltrade-record-one/ p$ {; V% G8 d$ H9 \+ P% d8 C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 K1 ^: m( v$ _5 O9 s3 L, c" @) N7 v3 e. ^# k
;;[
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]]; t6 L* p: B- P* G3 }7 o
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]: G2 c7 D5 c& z; Q0 a! u8 R5 [
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
3 N4 \8 f% W. a9 _1 F) Mneighbor-total
: w8 d( j& X% x% ^8 G( Q, Y) i3 m& S;;
记录该turtle的邻居节点的数目
& C. m. p5 P0 X3 [3 s/ Ytrade-time  u9 `. O2 J% N; Y. o* L
;;
当前发生交易的turtle的交易时间
/ d/ f6 T* D) N2 ~appraise-give) I7 f# T: ?# T$ |2 A/ d" G
;;
当前发生交易时给出的评价
" O" K1 Y$ ?, c; }7 \appraise-receive
7 o0 v2 e- M# ?7 O4 V;;
当前发生交易时收到的评价: ?4 W8 T- n$ j
appraise-time
/ y0 `( i/ {% b* b3 W, C" |;;
当前发生交易时的评价时间0 F" E  ^5 W8 X+ i% x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" s$ z0 c3 c, i1 f# Y, b* L: b
trade-times-total/ N: N- U' w& e3 K
;;
与当前turtle的交易总次数- F9 z: {; V; l; m
trade-money-total
, y, c% j( N, L" n;;
与当前turtle的交易总金额/ e/ w% y" e" A; D
local-reputation* w* k! c/ n8 @* l
global-reputation
$ S6 l2 [* V( h8 Ocredibility5 @, D8 M5 a: I8 _* M% P7 p$ L
;;
评价可信度,每次交易后都需要更新
. x) m6 D  R# j) w2 `$ p$ fcredibility-all4 C+ o9 u4 E7 i' c4 ]6 @  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
: V, h0 a0 N% Z" @' U& p  g$ v% [6 I* p' g3 e0 z
;;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
! T! V! Y' M% acredibility-one
* I- ?- x5 f! ^& U. q9 I: s;;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
+ b" a9 q) J3 w1 [& u5 Q3 Sglobal-proportion8 x9 q! J) k; l/ R3 ?, ], u! ^" t1 |
customer9 P; Y1 O7 C% |; G4 e
customer-no8 t; j% j" _" G4 V6 ^
trust-ok: {6 J% v$ E8 H$ [
trade-record-one-len;;trade-record-one的长度
0 V3 o! Q/ l- K# \& n]
- V# |/ t' o1 r4 a& @; G" K  }1 k8 M) A* h. L
;;setup procedure- |: Y1 D5 \6 Q7 ]* {7 _0 J

( {. @! _+ c' R1 a* r% H1 q+ i/ Uto setup/ n! m" p8 j. x; ]3 X

8 R4 `& W7 y, q- H  _, Ica

! Z) d1 L1 |* B3 I' E5 N
4 v+ B2 r2 I/ H9 q* {: P  X0 d9 rinitialize-settings

5 j  T& M4 h9 I  T' `8 \8 C  ~$ O( [# j1 V# h
crt people [setup-turtles]

* F% d2 M/ H3 z7 |: z6 c6 z9 B
' [# o0 @- i0 {. a  U+ vreset-timer
( f4 n1 m& N0 K

& D* U) r0 [: Mpoll-class

+ c  g6 `. h$ E7 |+ I& [' x' g( a' Z# D, W6 l
setup-plots

' V  c7 V5 t* N3 ^
4 h( Z+ Q+ p+ L3 Ido-plots

* k  |% [4 v: R5 uend
9 l1 g- q3 c' l4 H2 b! Y( l8 T/ ^$ t) u
to initialize-settings. t+ i5 p$ j% I
4 ]& \" q% C( h0 `, r% \( J% _" ?  q9 }/ l
set global-reputation-list []

# k( Z) a. O- ^. a/ x7 n! m3 ~2 q- s& R
set credibility-list n-values people [0.5]
* g/ P$ @2 p( I( c, F& ~7 b  o
$ J# u  J7 k* v
set honest-service 0
0 U( k9 x- b" j9 P) o6 S
" {, \9 K, z1 H  C
set unhonest-service 0
: f- z  B. y) A0 v  G6 ~
/ Y) H% i2 `2 @
set oscillation 0

# W, z" c5 [6 [  `; G4 D; Q6 \% s9 Z! D' R$ j4 v& v3 v' F# C; U: f* K
set rand-dynamic 0
3 @, U2 X/ J7 l! B6 \
end/ A9 Q) G5 S* F6 f! w

9 A( C, i. g+ }' H1 E2 E6 i% [to setup-turtles 6 G& }7 j( p" B( h
set shape "person"
/ m# C5 n" `0 I& \4 O5 esetxy random-xcor random-ycor$ f0 }4 B6 g8 ~) b' t' r; f# n
set trade-record-one []
8 C1 i$ I2 m/ i: W
/ k( d' b8 S( E( y5 U
set trade-record-all n-values people [(list (? + 1) 0 0)] ) V) T; d9 ?6 V" i( s5 w* N
0 [7 @+ U, ^. E2 i4 S- A  C
set trade-record-current []. ~, |" D+ O. O9 [' ~: N
set credibility-receive []4 t' ^/ \* E; y9 @$ V
set local-reputation 0.5
1 V( d8 b5 ]. K/ B7 }& X) t. V- pset neighbor-total 00 I0 b% C3 y, x  K7 j
set trade-times-total 0& b* N: ]5 d0 S* w' y( h
set trade-money-total 0/ [/ M) a- r3 D% y
set customer nobody
% l& I0 H% X' [& dset credibility-all n-values people [creat-credibility]% E- |6 y9 d+ W* ^3 ^$ H3 m
set credibility n-values people [-1]
. i1 ^, z/ K4 f$ A# a& yget-color
5 f9 v6 D9 A% G1 A: I

* u. F6 j% p) F+ q1 K1 vend' I6 z( J& O# {) B0 g, c
1 [' P( j% A' e
to-report creat-credibility
* Z7 e7 P5 d, ]" n1 nreport n-values people [0.5]7 y5 r+ T4 l( I
end% P* ]+ m$ @7 N& m1 v

' U1 y1 o! f2 ?6 G' i: s% `to setup-plots
' c: I. b# ]4 S) t% ]
3 `( U2 H+ g1 u3 z, q0 M9 {( @set xmax 30
# P6 {/ ?4 A1 G3 P4 d. M: w/ C
+ c8 {9 i& y. A! }- M! ~1 j
set ymax 1.0
7 W" f- k$ J4 \! |0 y; N

2 A% \/ ?" N, t$ w( R$ xclear-all-plots

1 y* ~$ X; U  @# e) j( v! m- L9 ^. s( L3 i3 C5 W* }! w
setup-plot1
3 ^0 F4 u5 l9 E% ]6 |
* O( _1 e/ l( d' g
setup-plot2

  k! T/ i  p% G, o. C5 R; `( ^. h2 r% e! l' ?$ O4 Z
setup-plot3
( ?# E/ K- n# {1 v" j+ {
end
& D( g  b9 {. Z; T# a1 e3 S- \0 @  y" q* E* O: R( a
;;run time procedures# P: z9 J! ^7 J9 e- Q3 H% f8 |

% ?7 ~, c* y* }2 q! H5 y; p0 Ito go1 }0 g1 d) M$ A8 @( s% n
5 F, C/ w, y5 z
ask turtles [do-business]
% A4 r7 T/ @1 a" U0 M
end
" p2 A" b" ^+ ~& B, i0 y  d: {! a2 x( ?2 I
to do-business
/ s' |  C- d; X

! t5 l( E! J! }- @" \9 `* @, q; z8 y% ^% i! s) p
rt random 360
6 f; h' Y8 q* l4 s$ P: X
6 X1 N. R/ j! D; Q( Y& }
fd 1

+ R. F3 {! D, r; e* I) q& g0 ^. ?3 m6 w7 ~$ O
ifelse(other turtles-here != nobody)[
: D8 G: g6 g, e4 K; _; l
  \* \& w3 q( ]7 }
set customer one-of other turtles-here
# c) ^2 L( E- v) F5 ^8 Q) U9 ]

. @9 N" ?! S( h4 ]% r6 }+ C;; set [customer] of customer myself

! E: A4 w3 C. a; N
  a5 X3 O4 U9 ]; G/ s, r  v$ K/ Vset [trade-record-one] of self item (([who] of customer) - 1)
; u. Q* |% r, ?( X0 v. G5 ][trade-record-all]of self
$ \8 y5 g/ R5 F: E+ |! e6 {; Q  u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# t4 T6 e( I! p+ R$ \1 z
% U( X1 H& ^9 ?
set [trade-record-one] of customer item (([who] of self) - 1)
1 `' r  K+ G( x& z. i[trade-record-all]of customer
; v/ N( S3 x2 X1 ]6 {- r
1 D- {6 K. T/ T
set [trade-record-one-len] of self length [trade-record-one] of self
% N- ?9 j) J/ C% q5 u
$ ^. e! E; e, D3 `9 Q3 d
set trade-record-current( list (timer) (random money-upper-limit))
5 q$ I* k: l4 m

9 `, _% A' w+ o! Vask self [do-trust]
8 [* C0 f" t3 @) o0 @& W  n;;
先求ij的信任度
5 m# u  ]5 f9 J2 f/ M2 O( i$ L+ B2 `$ ~
if ([trust-ok] of self)! A+ j& a" L2 Q1 L& {  m
;;
根据ij的信任度来决定是否与j进行交易[
/ E0 g, e6 Y5 F. H! J- Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. A0 D, v2 A9 c; N, F* _' M( N5 }& u- i. }7 q1 ~& l. O
[
! r% Z- M  ^& Z  E, U  w/ Q

' Y: L$ v- h1 a4 Odo-trade
4 q9 D  _( A4 r! f/ W

3 J% s) P: N" `update-credibility-ijl
, S3 o& e, }7 H7 T# m+ ~! p
# D! g7 O' c3 }/ k( {3 Y! c; c
update-credibility-list$ I' d1 D2 C6 m9 G5 b3 x
- i4 g3 ?9 i% f; G+ Q9 G

/ {' |5 R' a" P7 [: H' m7 fupdate-global-reputation-list
" E* y# z+ t: h( Y+ E
( X2 D( U$ n( Q8 O- z3 h
poll-class

! k' O7 L$ L0 C1 X% N# x
+ q: A$ c' i- ]  v0 U% Z: f! Xget-color
' Y) R9 x* `  B, P

- o2 N- F0 }4 Y+ T9 @7 m]]4 L7 j+ Y2 L2 L* o  U

, ]2 J0 U( Q4 g/ u;;
如果所得的信任度满足条件,则进行交易
; o8 Q. p$ M# a/ C* r8 o& j9 U
8 T% R: M* a( g$ c2 \[
3 L1 e; q4 n! m; {8 A

/ f6 K" e; {% Xrt random 360
3 y4 n8 R' ]# V  K$ R  W& q+ [; E' @) o

( m& D  ^; R) [# T+ ufd 1
& B" ^2 U: j2 J. ^/ c5 ^
8 Q/ s' \1 S: X6 [* y$ {" U
]
% M5 l/ Q" E  s" f$ C
0 z: ^" X1 P5 z
end

; D% R5 t; v9 Q. E) ~( k
! P. x% \- Q. o$ Qto do-trust 0 g! D5 @* N0 j  ~* `- y7 {
set trust-ok False
- v2 v& R; }+ ?$ V, m% P: T
9 d6 R* M0 y$ z9 t
2 ]  U- k: a& R9 b! n* \" o' M
let max-trade-times 0+ b% v; ]/ J4 k  B- j2 z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 O+ Z  L* j' d! G5 ^5 V% m
let max-trade-money 0& }. W9 E* S# v& ^
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: B2 x( S3 j. ^) A9 j/ \5 L. ]/ V4 w" P
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); N7 w! [2 u6 p$ Z- n7 E

) f1 `! n# ]' y

' M/ ~0 c( z% nget-global-proportion
3 U) p  s- x; Q. Zlet trust-value$ i- W5 C' W) N$ B/ d) a( u
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)

- _0 e% O! g3 s& Q( F9 ?$ {if(trust-value > trade-trust-value)
( F, z6 Y: M# S3 K3 f6 j5 P[set trust-ok true]
8 f0 K2 S: {0 j# rend
8 U; T2 G6 x: J: v" G; P' T! h" _1 v) h7 U" X
to get-global-proportion8 z! f: n0 m; ^. [( G
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! n; Y9 [0 X; G" p[set global-proportion 0]
" e5 A( {2 X2 y# _' x% k5 X[let i 0; {- m1 s- \. z" S, c* Y/ ^
let sum-money 0# C1 V. u6 n4 m
while[ i < people]
% Y# b! n) {4 p" ?1 K! K4 H1 X[; x  Q& w4 [5 `0 ~4 q6 G4 W4 c
if( length (item i
6 U: B1 f/ t$ z* E( T9 O% O[trade-record-all] of customer) > 3 )

$ h' n/ ~4 ~1 |( x; M[+ H- W/ z2 F& d8 U" c  t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 w6 ~& d" D# z& }2 S]
2 f8 l9 L, M0 g]; D. v* l3 M! r* T1 x1 D: e
let j 0
( G0 Z; G* S8 K6 nlet note 0) P6 G0 y7 Y9 ?7 h/ R' Y+ X6 L/ a
while[ j < people]
- P4 b0 _; c/ _- ^: e' Z$ I[
4 W3 R: e+ ?' l1 Mif( length (item i
/ k( a0 c+ h: v[trade-record-all] of customer) > 3 )
5 l6 S0 M" O+ S2 J% }
[3 W1 v1 g0 [4 _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( n* ?0 K3 t1 q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ ^. f  V, u& h& ~# B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 m* g1 J  K8 ^: h* d7 B7 `
]
, S6 L0 `: _9 f" ?8 v8 B6 y]
5 P. R0 c# ]. i7 c* ]& Eset global-proportion note
/ m0 S% \# ]6 }, D7 g+ L$ g]; k! V5 {' \) r
end
7 L2 Y& [5 m2 P9 W5 w& U3 Z
* g/ \3 u1 W: h' v$ Cto do-trade) v2 `0 l. a8 Y" g0 V2 T2 w8 R
;;
这个过程实际上是给双方作出评价的过程0 a; S" @: X; E1 t+ N+ f% Y, {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# i" j: S- v. Y; a3 n/ |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 m# `8 L9 A2 j; X, }5 D3 q0 |set trade-record-current lput(timer) trade-record-current: v. s& q* T& N, @
;;
评价时间' H6 b6 a6 {4 |; d: g
ask myself [
$ b" I2 i5 W* U0 yupdate-local-reputation
  z% T( w0 n- |8 A8 Iset trade-record-current lput([local-reputation] of myself) trade-record-current/ w* D$ F% F9 n+ r7 s: g1 ~
]
. G1 k/ u3 {+ _; ~1 K. Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& Y7 F, Z4 j( }  R" e7 k8 W. Y/ a; Y;;
将此次交易的记录加入到trade-record-one6 }9 Q! ~6 M  j/ a7 D- f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% D; R5 t0 q. p9 B
let note (item 2 trade-record-current )3 L2 W; M$ ~, ^+ h% T# K
set trade-record-current
0 y4 \. m8 h5 E4 s4 @(replace-item 2 trade-record-current (item 3 trade-record-current))
5 x2 ?, p( z9 |
set trade-record-current' [, x+ w' j% o# V4 v8 c/ U
(replace-item 3 trade-record-current note)
4 P7 i* _- e4 ~0 R- G/ w4 T0 {
: F4 e! B2 z7 B: V( m
2 N/ W( H- J9 J' y4 j8 x; a
ask customer [- K# n* A1 X8 w4 x8 ^# d; I$ I
update-local-reputation
2 N) S  k8 c& n% Lset trade-record-current" _$ I0 F6 H% d+ R6 q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 A7 g2 p$ N7 _4 a]) I- g' E; }4 N9 O

0 p+ L8 U1 H" V( r8 R

( K" k8 R. Z/ ~. @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  N+ P( W7 g+ K* Z% {9 r( v6 P
! `+ |# i" w$ b9 b( ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 e; r* G' ~2 a7 i$ w# D  p* V; O
;;
将此次交易的记录加入到customertrade-record-all0 A3 g3 }% I" t3 r
end, G/ j% @1 x5 C6 U  H
# L# ]% e. i) f4 J  r" L
to update-local-reputation
4 A( y& ]6 i8 i( R* p. Cset [trade-record-one-len] of myself length [trade-record-one] of myself
& n& T- V1 x; T. a  u7 P' B* ?3 K) D# ], q$ K
( @. O7 E0 B; ^- ?; I3 K
;;if [trade-record-one-len] of myself > 3
1 Y. v( S1 J( Y0 D+ b) P
update-neighbor-total: [6 f3 F- m3 V3 [, _2 M: }
;;
更新邻居节点的数目,在此进行, D4 P1 m) ~6 A3 h
let i 3
3 _! Y, C( X- w: C$ dlet sum-time 0
9 n/ z0 L) L/ c6 s9 qwhile[i < [trade-record-one-len] of myself]" V' U  M' N( ?/ l: a7 w
[
8 _* @% T8 v/ V2 X" B  M. Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 P: ~+ W8 k. o
set i
* g, F( ]4 R8 M" M7 A( i + 1)

( v0 V" r9 s' y0 I. o" G) C]
/ ]: |/ M  l1 u( v" L, L% E2 H  @let j 3
- D5 h* K7 C; o# ?1 b7 ?0 k' slet sum-money 0: I1 g' X% V7 k: x# [
while[j < [trade-record-one-len] of myself]: f: |- C5 H  f3 r8 p3 ^
[
* @6 k2 K. H- fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. B7 [6 w% Z6 s5 Y9 I" q. y& zset j% [3 ]% X3 j/ N8 ?
( j + 1)
, J/ l! l! w+ s( ^* D
]1 r/ j  \3 U6 }2 S+ i- D' F/ r
let k 3
& E: X( j* _' z+ A$ k$ m7 U! a6 ilet power 00 M. H" w1 ]  B8 _! Z( |
let local 0& q/ q) N/ K, _8 t* M5 _
while [k <[trade-record-one-len] of myself]+ s; q, `4 U! f  l. g! J
[7 H4 P; n; ^9 i7 E. ^+ k
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) 7 w& N; d# H* S8 a* ]$ `- \  R. i
set k (k + 1)" }& `& `+ {+ Y; h' A) {# _
]% P' X7 m! H$ t, r# O! A+ s
set [local-reputation] of myself (local)1 z/ f* r5 D/ W( Y& r' y6 y
end# R+ U' {5 h: Y

# I  Q/ n) Y! r" i: `* k# D9 Oto update-neighbor-total* ~$ ^+ ]4 a* i6 t# [6 K  i
: k) n) p9 h. n) {$ r
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ Z! \# B) v( y
+ Q6 C( Q4 z( f( e3 {
1 L4 P2 I7 r+ [: |
end
) o8 }; a# w' x" G
5 x1 I1 a% T5 \9 S: B9 A) `& _7 oto update-credibility-ijl
' S9 t' v6 q! a! P
$ ?! k  C1 Y! `1 Z  o) w' a) w" t;;
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。* A& S3 \! H; z1 U: z* @
let l 0
. K8 c* r- a# C' w9 U: mwhile[ l < people ]$ m) o- F5 s0 ?/ N& v
;;
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 u, G/ P! e: z; o9 Q7 k* \4 V
[
4 A3 \9 D, R9 v2 q' A' g! _let trade-record-one-j-l-len length item l ([trade-record-all] of customer). F1 u4 v% {! u9 L; G% E
if (trade-record-one-j-l-len > 3)
# }# w9 @8 ], o3 L/ e[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
" w) U7 Q: b; e. E6 ylet i 34 ?- R/ P8 N* u9 d1 G) n
let sum-time 0
( }- q4 N# x- B+ }while[i < trade-record-one-len]6 G; [* F! m/ D. H2 G8 Y, M, V/ [
[) N$ A2 s2 _) C
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  m: k2 `9 z% g9 x8 t& ]set i
3 d3 S9 G% c, y( K( i + 1)

  T8 Q9 g6 y  |0 j) z0 T]
  d0 Z; W9 h8 llet credibility-i-j-l 0
* \+ G- P3 i* X# U& G* H;;i
评价(jjl的评价)
2 f8 O7 A1 o1 M) C  I: R' Jlet j 3! C) f- p' p5 I; R
let k 4! N# T4 T) N: G1 H3 n7 z
while[j < trade-record-one-len]8 M# E% l4 p- B9 I
[% V0 H. d) y% d* g) y" s
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
' k5 e4 ]1 t/ m3 c* x$ uset 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)
% ^9 u6 C  S7 t$ `; Iset j7 l( \" n; I& {$ z" G2 V$ T
( j + 1)

# y# x+ U% l3 O% d1 \]: l8 P  l0 A% g  e% [0 ?9 S. m" M
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 ))) V/ t% l. R+ s/ E! w

5 [, `4 O0 z. E: [

3 _: g% u# U6 `" B: Qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 n1 o3 S% |, x
;;
及时更新il的评价质量的评价9 l* b, Z" `% U( T5 S& L) R  `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" w, j6 Z  v+ z$ @$ Y; r) Oset l (l + 1)
: ?* W6 m) g" ^]
9 d9 i0 Q4 A* G5 {end
5 b# X* s% F) L# K. e" F
0 c" S# c$ s" E0 S5 N2 E( T* ato update-credibility-list- v7 O0 q  H, ^9 I+ e
let i 04 E' s0 Y! D& O( t( I' W- |8 f6 _
while[i < people]
+ ~6 _* G- W7 |" ^6 |  I2 r[
0 i4 F$ \1 R2 `6 w! X9 blet j 00 y% e. f% g' ~
let note 0. T7 Y6 [) X; _1 Q7 H5 C
let k 0
+ K9 u, S' S8 @2 k4 K;;
计作出过评价的邻居节点的数目
3 G: y. N" L  f4 S- \+ Iwhile[j < people]
8 t: U6 j9 L1 F) T1 y) k5 x[
7 A3 D: d5 B: f4 g" m4 w& ]& yif (item j( [credibility] of turtle (i + 1)) != -1). K' b/ V! M% w
;;
判断是否给本turtle的评价质量做出过评价的节点
7 S% l. W, x5 c8 I8 P5 }# L$ G[set note (note + item j ([credibility]of turtle (i + 1)))
- S4 O$ H" R- G3 {  c6 ^0 Y# P  F5 w;;*(exp (-(people - 2)))/(people - 2))]

. D. S* X  J7 D7 M& {" Gset k (k + 1)+ D; C! s& b( L
]* a+ f& R1 h, A0 U, e
set j (j + 1)
8 z. T' p" H* }) a4 ]& g]$ B% ]6 ~7 m+ U1 c% Y" b
set note (note *(exp (- (1 / k)))/ k)9 g' T! b' `; R$ B5 C; x' O
set credibility-list (replace-item i credibility-list note)
$ o8 Q* ^! f! E( \- T8 M7 _set i (i + 1)
# a' V. N8 R3 {) b]9 p' C% I* F& f- F( d7 t, x/ u
end
5 R7 s2 T) d* p% K* S" o
& g+ {& I2 |8 @to update-global-reputation-list
6 a) ?4 N2 A% c! g6 @; Klet j 0& i3 c! Y7 c1 R" ]1 k
while[j < people]
6 y8 W4 w" g% i  r0 k[2 g1 M0 O0 \' g$ z( }
let new 09 R5 K1 L% w# G9 E3 Y
;;
暂存新的一个全局声誉
, n9 D& }/ F5 M6 t! Y/ ^* `let i 0& ]6 W/ S5 b0 V
let sum-money 0
+ r. Z3 i' \& nlet credibility-money 0! X, z- ?6 e" b
while [i < people]
! v% p0 y9 P7 [$ [& U4 q( Q) z[* N; S* F% K2 a' d9 \9 u
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 J* y" q& s' Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 m2 x$ Y8 ?3 w8 r, E2 A3 ?
set i (i + 1)
- _: h8 \9 M" E9 Z- r' Q0 q/ E]
/ M( O6 k/ z4 J) I3 W4 c" K7 Alet k 0
' d5 V: B& w  E6 ilet new1 0( t% }0 Y# o% s/ q
while [k < people]
1 e* B8 l; F/ G+ r: y# \# O[9 y( r# p/ G2 O# F1 i" o
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)& O' @2 _6 `( k; |  W6 U
set k (k + 1)% A6 W. T: u8 J& ^
]7 n" a. a: b+ O% I( @* h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! F7 {5 T7 h2 s, R
set global-reputation-list (replace-item j global-reputation-list new)3 t- l1 I; N/ f/ G) V
set j (j + 1)
$ j1 F  Y% v5 B/ p/ W4 b$ w6 y]
; t3 ?* K' b+ S* {end# ^3 h4 X3 }3 C# C) U# g* g! f
& d& {5 f$ J5 {& g2 Q& R1 R
! Z9 m! M* O! @9 S. g( |: T

1 o: O% n+ e# q$ Tto get-color. o5 C; D/ ]. m+ H9 N+ h% [6 t
1 @' n1 ?0 R+ K0 x! B
set color blue
: a  w6 I2 j% N8 g+ J6 f7 D# \) K+ i7 k
end! }4 t3 B) q3 ^; V& i9 e

4 O* i+ [" |( ?& l+ ?to poll-class, W. T- w' Y$ Y0 f
end0 h0 j( G- m5 }: A+ m: C# m

0 s2 V1 H4 \% Q( m* S4 y5 Wto setup-plot1
* J5 X# g1 B3 N
. X2 ^+ @5 D5 B5 B! ]; @set-current-plot "Trends-of-Local-reputation"

* o6 ^  n& Z/ p. D3 `6 Y' e
7 I# w5 B& o: Y2 _set-plot-x-range 0 xmax

1 d& g. X5 r; o; r# s+ D# {# p! v) l! _* G/ q4 B
set-plot-y-range 0.0 ymax

8 d$ V& |. e. {8 ?  Y+ I" F" [end* t) b$ ?$ o+ Q- D! P
" D7 h" J2 c, r: o
to setup-plot2
2 B, Q( ~2 T3 F2 ^4 a9 t. T! \, ]6 b5 ?: J; t6 A8 q
set-current-plot "Trends-of-global-reputation"
7 h) W1 k- a" p5 v1 k# l2 a* k+ I. T

* N" a1 M; q! |# O3 K' E4 H0 L$ Hset-plot-x-range 0 xmax
4 u5 ^# i) r. P/ ^4 o& Y0 U
. d# f" v9 ^: j0 Z) r( C& X3 w
set-plot-y-range 0.0 ymax
* \, ]( a6 d( I  `* m$ J$ p. z
end/ v! R5 J3 ?2 i* W+ A: a
+ c! s. D/ n4 W$ h, `3 P
to setup-plot30 H& T# T, L5 n& C5 ]! A# r
& L, o7 E! k! o$ w8 p& M
set-current-plot "Trends-of-credibility"

; z, |! ?9 Q% d5 k
! g8 u: ]: x$ `set-plot-x-range 0 xmax

/ i- a+ ^% Z6 S* K- L5 G+ w5 R
# Y) t( t+ X" k7 vset-plot-y-range 0.0 ymax

) ?! Q. x- z2 z4 B+ O" xend
9 o( M, D8 F2 b. f; ?: c2 }+ a. A
to do-plots
- D9 c7 D6 V; X4 s3 D1 k! }2 m+ lset-current-plot "Trends-of-Local-reputation"
2 a: ]  Q3 L1 nset-current-plot-pen "Honest service"6 |$ @/ l  F% H5 E3 z
end
6 z& s; b  ]- w  }, ~! F' E$ I  |2 ]- L& k0 N! ?6 K
[ 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 Y, V: ^4 O- w% H( ?
( e6 _1 F4 }8 I( h" m1 \8 P
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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