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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:
; v+ g$ [" k* j5 P8 l. {8 ?to do-business
" F0 |: w, }1 C9 v rt random 360
8 g) f0 a, q3 _, y fd 1
7 W0 K6 w9 c9 ~+ R- ` ifelse(other turtles-here != nobody)[
/ ]6 w; y- Q/ b8 d7 A8 E  T: N$ |   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.
0 \, @5 ?* f: d$ o7 s. O, z; M1 f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 M2 h) j# J1 C( s( X3 V4 ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) G# c( w! z9 X9 y! I6 W( K
   set [trade-record-one-len] of self length [trade-record-one] of self3 o3 u, r+ B# C
   set trade-record-current( list (timer) (random money-upper-limit))
6 {% e+ E  D1 X" a
6 U5 e- ^8 [! Y# ]3 ^问题的提示如下:* N* k$ s9 v/ v7 D0 s. U$ Z9 b
' i2 l5 q' p' w- a8 R# P
error while turtle 50 running OF in procedure DO-BUSINESS
& p# B0 E2 s( k0 s! z+ {+ K  j3 }  called by procedure GO+ [5 v5 y9 G1 h$ v( x2 d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  {! D7 m) k! G! D8 x
(halted running of go)
! a+ E* W$ l" J" G+ \( _" G
& i7 O! h0 z% c+ G/ {0 r, B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~~. H2 M7 f- ?, _  t
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4 e  x- j3 S5 j2 J4 C3 B
globals[, a; b4 F/ T& O" j
xmax
' D8 ?* k$ Q3 m* dymax
( ~7 P. B( u+ jglobal-reputation-list6 J6 {$ D% W& \: Z* z. E! w( w
: u: P9 ^1 X& a, |' O5 t
;;
每一个turtle的全局声誉都存在此LIST  L9 b7 C  \* ?0 j8 o$ D
credibility-list- _/ K/ q6 i6 c  M1 P
;;
每一个turtle的评价可信度# Z; F. b0 `. o. ^+ q
honest-service2 h5 c$ ~- x! k& ?; G2 r
unhonest-service" `1 \- m" x( i4 r2 u8 u
oscillation
8 N  S  A, W- Brand-dynamic* T6 J' P5 G( [8 C$ m) ]4 X1 T# ^
]
: L1 O5 {4 h7 I, c) m
' m3 R& V/ S5 l$ Aturtles-own[
- Y- v2 W' \# I  z2 j: e- D3 D$ ~$ xtrade-record-all
9 z! E- R/ n" @0 n+ P;;a list of lists,
trade-record-one组成
" K! R( r9 B+ P" h: o$ Ytrade-record-one
2 b, c3 b, E# R;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 Y' @$ I0 f( |/ |6 t# B" @8 O0 l3 ]2 b- q7 `
;;[
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]]( k, t8 {& q/ K& ^0 W/ ^5 Q5 h0 p, P
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]& V7 k5 j: @7 N2 S+ ^6 ]. m# K- 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list
* V+ o: h( }) Sneighbor-total
$ w8 L' G1 {4 u/ B5 \* v;;
记录该turtle的邻居节点的数目
' V+ s2 q0 }% g- Etrade-time
& G- l. k1 z: N" };;
当前发生交易的turtle的交易时间
5 M  k# L2 ]3 _appraise-give3 ~. {# Z$ p6 Y* u7 z
;;
当前发生交易时给出的评价
0 a; X) E. G! Y" I6 ]) t) Dappraise-receive
/ ~. h, e5 J! H4 [. u2 t;;
当前发生交易时收到的评价3 Q% K- E  Q$ f, L* k
appraise-time
0 |4 X4 k) y# ^  U;;
当前发生交易时的评价时间& ?/ R5 v7 o( l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 V5 z2 a+ K' W2 N1 \1 k
trade-times-total
! b/ d: p& E3 X% g( T7 s: O;;
与当前turtle的交易总次数
" L* Z2 V0 p7 Ktrade-money-total' y: a" b! O: X3 D9 y6 _8 b8 a
;;
与当前turtle的交易总金额1 u/ O3 p3 y6 e" h" L
local-reputation$ D; J. y; ]; r3 J# b. _% B
global-reputation
6 R1 N; x- s5 [. f$ M) x* Dcredibility
, a: {0 `: {" J) T9 ^;;
评价可信度,每次交易后都需要更新0 I! L) x5 m# F1 u
credibility-all
7 q# F8 B0 J' |) _  A;;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5 _6 c' T" l6 P: f7 D2 {! d5 J& o
; K% \) d6 M2 p& t+ d  ?4 ?" Q# A
;;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% c- t5 p. ]2 S! Z9 I$ Q5 o
credibility-one3 V# s- q1 q6 a
;;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+ Z0 j+ v" F- M5 A
global-proportion
; V4 ?: O, n8 z# y% }# J6 zcustomer
# p; W5 f' h* V3 c3 s1 e0 acustomer-no
7 K8 U6 j1 J, a9 L, k1 `trust-ok
  M- A% k$ R3 M9 strade-record-one-len;;trade-record-one的长度! J5 j9 A! D6 H9 v# ]" w
]( B, i0 c6 i$ B+ c6 g+ _
1 W$ a9 h3 `- [: d
;;setup procedure; K; w9 Z. \) I

/ F  A2 `  y6 w7 y% e9 Xto setup
. V, M# k* l9 H: h+ U) D4 d4 K0 A) J/ A
ca

' V) E' Y9 y& ^3 `
* Z0 Y5 u4 D: _% m  yinitialize-settings
9 S& A2 r( l% q5 @$ F) Y
/ `- ]; ~# m0 ]$ \5 H2 Y
crt people [setup-turtles]

- _6 `7 T& `2 K8 o  N$ s( K
  G7 c- }3 U- D0 @reset-timer

! c4 s2 U2 n" y* X2 y/ f  {: A3 F/ j/ x9 q( n5 t; a% k' C. T# }
poll-class

  Z  M( @* M$ D8 \. @
5 d3 l2 h9 ]9 c6 esetup-plots

6 ?  h* v7 {: ~9 e. t6 D1 \2 n3 r. y8 }$ W) Q
do-plots

& g) Q1 j1 |4 Y$ ~" [0 d. r8 _end$ R: }; {3 i# {+ e
$ I' C8 e$ R( N" M
to initialize-settings" T9 E# P; I# ^9 ^/ `- B5 M6 t6 |
& V0 n$ e# X1 ?9 y2 e1 {  j' M
set global-reputation-list []
$ U: f1 B3 q# V# g3 |9 f! y) X* e' d5 v

$ b- N5 \3 Y0 `  ~9 w& |; g0 hset credibility-list n-values people [0.5]

8 s& S/ A0 O% N2 ^0 s  L7 ^4 C; R$ D* K- h0 G: c# h
set honest-service 0

& g9 O: T* k& Y6 f8 U$ u7 Y/ [/ h$ \
set unhonest-service 0
4 `' V1 B0 R3 o
$ N9 p0 O1 P) W& E1 A6 p
set oscillation 0
. L- k, ?3 e2 G# c& m$ G- E
$ \) m  _" L. k; U  T3 a7 o
set rand-dynamic 0
! K$ I0 R0 q, }4 P; Z( K
end# y; m7 F* r' s7 {8 [  z

% T3 \" j" _! |0 W* T0 W) nto setup-turtles : P9 T+ k8 k6 U8 ?( _9 O6 J$ s
set shape "person"6 s3 r! v4 \" x7 s# ~
setxy random-xcor random-ycor
& Z$ e8 m! b6 h3 Vset trade-record-one [], {* B: u" t& Y

8 l1 \* ?1 n: vset trade-record-all n-values people [(list (? + 1) 0 0)]
" W; o3 S5 v' [: {

; i5 m9 _4 V4 p- O0 ?& g5 Fset trade-record-current []+ M% s$ O3 i4 ^7 V7 K8 [
set credibility-receive []
* K! g/ J# u1 K% i$ {8 q, cset local-reputation 0.5
. f1 t: G1 G: I9 X5 \5 dset neighbor-total 0
: \# ^2 |& g! sset trade-times-total 0
$ T5 M! D0 W* [; A" Jset trade-money-total 0
1 y% D& p4 J, Y2 p( d! J$ fset customer nobody
, y( r* @9 p0 C5 K7 u, Mset credibility-all n-values people [creat-credibility]( X/ M, o: r( M
set credibility n-values people [-1]; y8 l! r1 i. S
get-color: Z; J8 g9 ^0 g  B: L" J" u
* @9 e- k# W, n: M' T/ b4 d
end
/ H$ {; a* W! n! k1 {0 w5 u) n: p1 H
: L0 [7 C$ B* r+ a, mto-report creat-credibility: _% R% |( Q* }7 i+ X2 U' A
report n-values people [0.5]
- r0 M1 q2 h) w1 mend
  g0 e- T' \. e& n. H. h% F- X5 Z/ V2 Y0 K
to setup-plots
( `! G7 s$ z" U& l
0 @* B- F! n, P8 j" zset xmax 30
" L( u4 j- m. E9 Y2 |$ v( w

- F7 M4 ~9 S* K2 d# R8 d( b  d9 M/ \8 cset ymax 1.0

2 L0 i& L- G5 Y5 A; [) |/ K3 C9 q9 G/ X
clear-all-plots
+ H" B: H( R) A% r& \$ a5 E! |. V
5 `" n3 k; Z8 s, c# R2 j
setup-plot1
2 Q4 U6 V2 S5 ~& ]. ~& c1 N/ [

6 F7 z  T- N/ N7 d# v. xsetup-plot2

6 _) m; X0 J  w( `# O# P3 K- W5 b1 U6 m9 \/ M! P
setup-plot3

7 W5 P# k: _6 O+ B! t9 Y5 U2 H# yend
" E6 R7 h6 h$ [! f
: T6 O8 }1 i2 z2 k1 h0 Z" e* {;;run time procedures
# D- i0 l( ^, g
. v. r( T: G. b+ T7 B) Nto go0 M( n  U! @+ X$ n: F6 g

- s8 Q7 p6 ~5 bask turtles [do-business]
, ]' B* y' G5 M% B1 h# T) z# Q3 Z
end
4 x( c3 {* ?5 F# a0 I0 v
( ?% p7 x$ \5 r; n  e  o7 xto do-business
: x7 r& v3 f& K) u# x/ O. \; n5 X

( u# o% n& F/ k. x1 S+ T: a# Y
5 m" t9 O6 d: m* ?rt random 360
, a/ i( k, n* q! \, g6 v
* r6 e0 T1 `0 S- n/ k
fd 1
8 W( A: |. A& Y9 e
- j1 S8 U7 ^6 ~  y1 M, F9 F
ifelse(other turtles-here != nobody)[

- v  {1 K) b4 A+ F% f- I/ L. C' ?( q
set customer one-of other turtles-here

9 u8 t+ @0 S4 G' U8 U5 g9 h  c- w& ?, k% j: Q; Z
;; set [customer] of customer myself

4 r1 A' D0 |  O5 U) A) s+ D3 N7 R( {/ g: X$ W' \3 R- g
set [trade-record-one] of self item (([who] of customer) - 1)1 F3 p9 _0 `$ i9 A2 `& P
[trade-record-all]of self
( _+ A4 m1 c' W9 ?4 H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" N) Z: D6 @2 e) O8 `

- L* M* B0 i  a' x0 vset [trade-record-one] of customer item (([who] of self) - 1)
5 |! i1 C# @4 z' C1 P' u[trade-record-all]of customer

8 {7 Z) L1 X* ?7 ^. _$ f) N# O+ l/ n6 \
set [trade-record-one-len] of self length [trade-record-one] of self
+ `& [! E1 S  }6 {5 H+ |7 ]  f* P

) m4 L6 y! P! A6 jset trade-record-current( list (timer) (random money-upper-limit))
8 j. b+ N6 P! M$ p9 p" q

# I! k9 e  r( Sask self [do-trust]! C1 C  [3 F" I$ O) h
;;
先求ij的信任度
+ l* V* R0 V: t* _& Q" l0 W' l
  p( \" l" V0 D2 U& U/ l0 p$ L3 Zif ([trust-ok] of self)7 _( Y& i; l# n1 A7 j* a5 d( n- }
;;
根据ij的信任度来决定是否与j进行交易[+ e8 Q! Q! @+ J* H: B: x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 X4 Z& p0 n( b+ ]% _/ E" ^, a% T/ F  e6 O  i9 A( d+ K) [- ]
[

, d' M" g: k# R. @! u% l& h  ^3 {6 B; y0 C0 j3 c
do-trade

% B  A* \/ [" v! \* F6 d
- Y. m+ T- q( N, [update-credibility-ijl

; o' X0 ~( A6 _. h% q( x! s; v6 V( N& T  j/ [* w6 g0 [
update-credibility-list
0 q/ H) ?" Q( W; u9 F+ a8 c* i

) P- X$ ?/ o- j3 F" {, d2 s/ _- g9 l
& d8 r8 i5 i5 H! B" n4 [update-global-reputation-list

5 @; H4 o( [+ l; x0 Z1 f
. s8 P# C  g8 vpoll-class
' M4 U* [; k7 d2 Q7 S: J3 z; k

) F( ^* ^' @* Aget-color

% P5 U; C6 o- Q& V$ _* |. }) F  m- {' f1 k+ }8 g) h1 M
]]2 b+ p0 s$ r0 |1 I8 R

! R8 p, z5 p# ]- _6 p) w;;
如果所得的信任度满足条件,则进行交易
' k  f* Y4 A" @: [
! {$ U" c! K! x5 K[
: M1 ]% h, q/ Y/ ~# N# r3 K

/ o; a/ M8 f: e$ w, Brt random 360
* E. s8 U, n  a( ~; {2 V( Z
& b9 t- T4 Z2 \( h( `2 P
fd 1
) }% F4 N3 g- X8 U

' T) K1 L+ j# Z1 h. Y) {]
# P4 n9 x. L7 R& D7 j# U- L

! A( ^" R: J4 v9 L( Lend
: f& p' `$ R0 b1 p

+ t4 }5 f* ?& U+ q$ L! ~to do-trust 3 q. E, |" {( Y: k
set trust-ok False
7 q8 u+ b0 q0 b. m& ^  e* R  ^) O- [# J
8 J& Y# e  }! N% J- j" J
7 S3 J8 V( h" u2 R
let max-trade-times 0* P) G' v& h+ B% u9 \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) y3 l, b1 B# [6 vlet max-trade-money 0' P# F+ W: s" a$ B# @, T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( S6 v/ @; x4 O) _5 i+ p9 Y8 s! m3 olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ \. ^% h( Y8 X0 |9 V1 d2 P. x/ N1 ^- \9 H# r- b

7 H  C( h' c" q  d/ bget-global-proportion  @) I6 M- S0 i4 [
let trust-value
8 _( N$ D1 l! i( M- ^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)

4 r! Z, D4 B: o* l; Gif(trust-value > trade-trust-value)& S1 {9 E! C7 e- Z. z  b$ k
[set trust-ok true]
( E5 e, f3 U. w; y% z4 ~0 C* Y  Lend
/ r0 b3 J# w# n, _; \; U0 s, U- V9 o  s9 L+ r! @: v, t
to get-global-proportion1 v/ C" ^& ~# O# d8 Q! k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 G9 |; Z6 h) R+ m( B, ~3 {[set global-proportion 0]
  U* q: g- l9 F- r; K  @[let i 0! L, e2 `+ |' v( H0 K* v
let sum-money 01 A6 Y# ?6 @( `  Y* Y5 B
while[ i < people]6 |4 s8 t: r; o& Y
[' i0 i7 W$ h% J% k; ]
if( length (item i0 D) q; u6 |" c
[trade-record-all] of customer) > 3 )

- x$ d0 h: ~3 |# R[) u+ @: p% U5 t. R/ b. j' u7 y9 S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ G1 H, ?2 Z, B# Q  Z, S) X. R6 x
]
4 c- G# U: _( u* W% @]
* T( O  a0 x. Y4 _1 @let j 07 M2 f1 e: Y; v; i9 A
let note 0
: {3 r% E! w4 g, gwhile[ j < people]
; _, J$ S* ?; {7 g  R[
! m+ z) l8 M# v/ ~$ v  Y! R, fif( length (item i
1 \- s+ s% X7 j[trade-record-all] of customer) > 3 )
& \+ s/ h3 ?: }- j$ ]% T/ [
[  S$ k0 N( |- _1 ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# S1 B% ^' L/ h$ T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: J/ B4 e4 `" o: O( k9 y6 W! Q, s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 b) \0 J# H+ w- \; v' H8 p]
7 T, w0 K& i' c# U0 ?0 g]/ \: r. k0 o% v  y0 S6 T
set global-proportion note
1 u) f; q0 j' j$ m" y# W  T8 []
/ Y6 ^& O* n' m% w7 Nend
4 K$ ?: C: o2 I, u4 j  U8 k% H1 [2 S
to do-trade7 I6 k4 e$ `; F% C" i- K0 _
;;
这个过程实际上是给双方作出评价的过程# {4 `% d! Q2 ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 N" ], J" x1 m$ ?% {% {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ I/ A+ l: p$ }set trade-record-current lput(timer) trade-record-current
* C' N7 l! m! @  W$ Z;;
评价时间
, h. E% A% W% D! j: [+ j* zask myself [' Q! ?1 [7 n# Y/ h& K4 g) @
update-local-reputation5 ]! ^+ @; l& R) D* E. q
set trade-record-current lput([local-reputation] of myself) trade-record-current4 o4 l' n4 V8 @: f2 P. D
]( M7 A! W: {" X8 y2 L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% g2 R0 s0 b+ o;;
将此次交易的记录加入到trade-record-one7 p! F0 N& B- y; v
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 H( E& m+ q; k& e5 olet note (item 2 trade-record-current )8 ^% I, d( ~/ A; m  D+ q% o; I; v
set trade-record-current
& q) y$ E' U+ b6 ?& |(replace-item 2 trade-record-current (item 3 trade-record-current))

# e( P1 v9 V5 m6 I' g/ Y' D1 ~set trade-record-current9 a5 K0 {( I" a1 R; o/ ]$ Z
(replace-item 3 trade-record-current note)
4 P, _* W* N5 W
' m8 I: M/ E! d( }6 u

6 o, d# E) L5 l% {ask customer [
' x' ]( C' [6 ~/ g. z) iupdate-local-reputation
/ O. `" P% X0 T, }set trade-record-current5 R, f2 e0 l0 K! I5 n1 [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) M+ q$ P& Z9 {/ []
2 |4 |5 C) }3 ~- F7 k( S1 m2 S: w! `
1 _  R2 X0 a4 Y6 d$ o" a, Z
8 g/ O; A* \! Q( k$ W2 @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% O" B. {$ h3 A, b3 a, v

2 Y2 O3 [$ w; S6 k  G0 sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# D% c" W& v7 H  d2 z
;;
将此次交易的记录加入到customertrade-record-all
. T4 c3 \! p+ `% v, g* }2 j2 S8 dend1 P: j1 i4 A! n" t' Y

  E' |" O" ~! N& S5 o0 _/ Fto update-local-reputation
0 S8 D" a) j& j3 c* @% s+ i; `set [trade-record-one-len] of myself length [trade-record-one] of myself& H8 r% A' ^- h5 Q
; [9 B; R3 f5 y* c! P! i4 ]1 n' \( p

& h, i; M; s7 Z+ M( ]0 [, W;;if [trade-record-one-len] of myself > 3
, l6 O5 o3 j: V/ L4 [# U2 z3 A
update-neighbor-total
- ^6 N; H  t3 S" i5 G- o+ A;;
更新邻居节点的数目,在此进行
) ?2 V- t3 i7 W" A! o, plet i 3/ n7 Q( W6 g3 b. [4 A( ?! v
let sum-time 0; S7 ~, `+ n9 Q: \" C) M
while[i < [trade-record-one-len] of myself]
2 u2 }8 R* b1 ^8 w# F# `[
* j0 W% |9 N+ T4 O- x% Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 T5 x$ i3 O1 p- R' pset i
' r8 M/ O5 ?% j; t$ J$ t  x( i + 1)
4 h! B1 A3 R$ G! w0 n
]
9 g1 V6 }8 F3 F, Dlet j 3! j7 D; S; v" ]7 `
let sum-money 0- k3 X5 y* L  r( C; _8 `! E; x
while[j < [trade-record-one-len] of myself]- ~( z1 j1 [& s6 h) A. V( \
[
" g, Y$ x! K/ oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. @( N" I( K; J' ]7 I% Z8 [" @set j4 s- G( r5 y; i' g/ |
( j + 1)

3 ^% T( u) K( u: W4 V]
2 g5 T3 Z3 f0 s" ?) Y% ^0 Dlet k 3" x& I' n( o+ p8 O& t* F
let power 08 {* I7 X  o( T
let local 0; P1 f: G0 p( l8 m6 v& Y
while [k <[trade-record-one-len] of myself]5 }4 k5 x" U) d1 ^" E2 I
[, K0 q6 i: ]/ e. ^
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) & W. V2 h, |. c- j* {  X
set k (k + 1)
5 k& ^6 a* k  n; G( |  K' l  a. t. w9 x]
6 Y+ j( a. a/ J# ^+ x3 h6 v9 c" Uset [local-reputation] of myself (local)
3 m7 }. a/ j8 i/ `9 f* bend
* v/ x0 s' Z, H( q3 ^% P. P" l
1 p. o9 M1 b2 M( N; f- c, Bto update-neighbor-total# ]0 g6 o9 [7 d- K" s( `. `

7 ~' J1 Z8 {: Aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 s0 r, R7 j- \, a( X' H

2 T: @& z% O# K3 d; y9 O

- M$ F* I( ?  j0 b0 @5 w2 ~' q& aend
4 _4 A& w5 Y' I: O6 q, ?- P; Y" P* H0 f) m; z. z1 F
to update-credibility-ijl 3 U! `1 O! }' e; Z  D0 n

/ N  x) M% u* \; J0 x) x;;
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。
% |* d+ b0 B8 E3 X$ f) I( P6 flet l 03 t6 T7 \) k- z0 F1 x$ w  t9 \
while[ l < people ]; i# w5 o$ Z" ~0 x# s! B
;;
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
5 S& r) Y0 ^0 m[7 x% W* e3 P. ^4 z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). x0 t0 }4 r! o# Y
if (trade-record-one-j-l-len > 3)2 @, p" `# T% f( X, }
[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
# v& t" d5 s% nlet i 3
4 K3 s" ~$ E) l! _) w6 K* s6 mlet sum-time 0
4 d5 q! i" G" x. iwhile[i < trade-record-one-len]
4 z9 }1 D$ _' h- M[
/ _. i/ \5 X6 v- K+ c# Vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ [9 m1 G) S5 ?. m9 I* Y: M- R
set i/ f4 x7 t: K* D+ h5 O
( i + 1)

, x- y' K8 x9 W+ |6 Y% ^]
8 b& W- y/ f4 `0 M+ qlet credibility-i-j-l 00 n, ]! m7 {! ?8 W; m: p
;;i
评价(jjl的评价)
) s$ G1 e$ J) X& ~/ p! qlet j 3! W  e4 W7 @, G0 _
let k 4
; L8 C, l- J( p0 B# Lwhile[j < trade-record-one-len], Z3 `# a; T5 t0 Z
[
7 k' @. B( k& j4 W7 Fwhile [((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
' d, ^9 E8 c$ S+ j( Kset 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)
  x, s) Q7 A6 w( l7 yset j
' w* Z9 W2 O7 N( l+ J* e( j + 1)

6 G# ~9 H' A0 u1 x8 h; c$ G]
# `% T, M5 R( b+ ?$ i# Tset [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 ))8 k0 i: y. X/ A5 s. B

* y- a  \5 t- ]* K, k0 j

; I1 `: W) |6 ?$ V: v& d# Zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& s! @/ g) G% q% S4 O% W;;
及时更新il的评价质量的评价7 B4 {  c0 s6 X( a3 q% V# n1 x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ N* w9 J& B7 _8 `4 {" S
set l (l + 1)
5 R. W3 }) d& D2 k$ g]8 D9 G1 [0 L3 J! C2 P6 a9 M' W2 Y
end, _) q6 {: u1 i+ u  l

+ j6 t7 w* f' wto update-credibility-list
: L0 f* ~% h8 D4 |let i 03 R% B) I1 L3 y' Y
while[i < people]
/ B0 v7 M# J: `2 f( f' K% O[+ T6 K+ G. f# W! I
let j 07 o# w- i' f" C6 l5 H% _* U2 S" M
let note 0
, I7 D6 o, S: h8 ?let k 0
! U! F3 X1 E9 r* h;;
计作出过评价的邻居节点的数目
+ G& ~7 I" b) S* T' a& r) a7 [  Twhile[j < people]
- }/ h# S7 V7 }& e" X[
) R4 m: S1 i) U8 X( d8 Jif (item j( [credibility] of turtle (i + 1)) != -1)
' Z* ^3 X. W; [" E;;
判断是否给本turtle的评价质量做出过评价的节点
# a& o$ r( n- U7 _% [[set note (note + item j ([credibility]of turtle (i + 1)))$ n5 o5 L/ w+ a* A/ v
;;*(exp (-(people - 2)))/(people - 2))]
9 y  |7 B  S- Z4 F
set k (k + 1)
' w) R0 g5 \3 Q+ b! q: K* e]
' i4 v( g- s/ P! Tset j (j + 1). R! o' U  }2 d& s- v
]
0 b6 T- `. [# vset note (note *(exp (- (1 / k)))/ k)
. s5 ?) f- ~+ H5 G1 h' n- E. iset credibility-list (replace-item i credibility-list note)
$ o( z/ E6 v  g- Z! K( mset i (i + 1)
* r, g3 \3 W% e]
4 Q  L2 E3 L" q0 Mend
, |* {2 |, ^; y- l, c% \3 [+ H; N4 c$ ~; Q- l
to update-global-reputation-list
. Y/ u8 [& n$ z9 t: M3 M5 w6 glet j 0
; q* p* Y+ V+ [- i  T* r+ Y* Mwhile[j < people]  |3 r9 H% u9 u- x: X! |
[4 |$ F% p/ t) O0 V, x" n
let new 06 y/ p% g# u6 H, h  K; z
;;
暂存新的一个全局声誉
  A: e4 @& G8 k8 }7 J: Z- v7 n1 x7 V$ Nlet i 0
/ i7 b' f/ Y/ Llet sum-money 0
; n4 w* c- {& wlet credibility-money 0" n7 l8 L6 ?+ }
while [i < people]( F1 y' M5 z9 v! z9 ^2 H
[' ~% `. T; P- z! l# g
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% c" j: T3 N3 N  F- b" I7 ]
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 c* q( e# X( Q5 Xset i (i + 1)2 c- [3 Q, J& _
]
# s0 W. H. e9 ~0 B6 ]4 n  ilet k 0
: r1 w/ r/ t9 g7 zlet new1 0
5 p$ Q  d2 H5 Swhile [k < people]* g( `$ G" ~( z# N6 _, J
[
6 q. E) I; f# i2 w3 N6 R) nset 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)/ u2 m4 H; f  F/ Y5 q
set k (k + 1), s  S" a( {7 S2 j- d4 g/ \
]( u4 z" l! G. u+ p6 q% H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 x+ g9 p! c/ {
set global-reputation-list (replace-item j global-reputation-list new)1 B% }6 K/ w  T' ]) ^# J( q+ [
set j (j + 1)) W) L# c# A- C7 q  m
], a/ ~# n, R1 G' w
end6 H1 c! C9 w# l- M* h

) C) n5 J3 @! z1 j$ @  H
7 A0 l% h& U& ^% Z: T3 h9 C$ a7 z& U& H4 e3 I0 p! N
to get-color, N3 g5 ~9 w* Y
% {* f% G: [- }) [- o6 h
set color blue

( n+ n! Y. T- D' p/ d; d. Oend/ O" E% v' p3 M" ~
5 H/ D3 Z# N4 q- ?) x
to poll-class
; j; M# m* P! ^" lend  q) l- V- }& A: c2 @( Y. P

- G: e! [3 i$ h1 y, _to setup-plot1
  ~4 f& }$ U) I9 i) U: \1 s' [- o# ?3 R
set-current-plot "Trends-of-Local-reputation"

+ k# Z- S; p9 t/ ]9 a/ D0 n: u
# [3 A: {3 y. d' J4 J5 D+ ^set-plot-x-range 0 xmax
2 b" W/ }+ J% Y! n) {

8 B+ ~  y/ d! [" K! e8 z( R9 j& A7 tset-plot-y-range 0.0 ymax
7 e/ C5 M0 n+ e
end6 Y; \7 ?# r/ [# T+ d  n

/ O. t! A/ t/ T* zto setup-plot2
, h3 O# I! ^+ I- a! Z& h; k* d4 p
" T' v: B2 [0 [$ v$ e5 E0 ~set-current-plot "Trends-of-global-reputation"

6 e( Q' W2 J5 J" {) {* K
- G; W) F% ]8 @2 nset-plot-x-range 0 xmax
7 C7 Z" R& `6 e1 X9 d3 l

- \- |* g" A# g' f, [set-plot-y-range 0.0 ymax
  Z6 p5 h" f; ~1 ]8 i* _
end
/ E/ W( |6 ~* [0 G
* N! k8 G4 I! Q/ T. y3 c+ oto setup-plot37 @& j) ^. h1 y$ E: P. w) Z
: |  w: m1 v6 n; E0 c4 \+ T
set-current-plot "Trends-of-credibility"
/ h& Z, w" w* f0 h
& o, _3 r8 [' F
set-plot-x-range 0 xmax

: w- l  |4 C3 n  o1 Q/ r  S, y5 f3 X1 ?& l# Q+ L: Y
set-plot-y-range 0.0 ymax

9 l  D+ W' |, R' s/ |* i* e5 `3 {end" Y' J2 d9 O% c( U2 h" i& p

  h) T! Q6 S, S; E: G) Z+ U* wto do-plots" i/ p1 w! v: @+ B: c9 g' @
set-current-plot "Trends-of-Local-reputation"! y& S) C% k# ]7 y0 \
set-current-plot-pen "Honest service": }9 c4 Z& S4 T
end9 y4 }% W1 [3 ~$ s3 E# t
  m* S. x; H9 w0 N& v# {! S
[ 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.
; P' b3 L; F) b7 X- K
8 H- U; ?$ R- w7 O8 b, |& Q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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